./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:37:41,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:37:41,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:37:41,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:37:41,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:37:41,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:37:41,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:37:41,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:37:41,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:37:41,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:37:41,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:37:41,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:37:41,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:37:41,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:37:41,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:37:41,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:37:41,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:37:41,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:37:41,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:37:41,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:37:41,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:37:41,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:37:41,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:37:41,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:37:41,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:37:41,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:37:41,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:37:41,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:37:41,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:37:41,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:37:41,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:37:41,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:37:41,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:37:41,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:37:41,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:37:41,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:37:41,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:37:41,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:37:41,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:37:41,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:37:41,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:37:41,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:37:41,556 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:37:41,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:37:41,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:37:41,558 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:37:41,558 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:37:41,558 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:37:41,558 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:37:41,559 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:37:41,559 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:37:41,559 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:37:41,559 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:37:41,560 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:37:41,560 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:37:41,560 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:37:41,560 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:37:41,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:37:41,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:37:41,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:37:41,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:37:41,562 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:37:41,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:37:41,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:37:41,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:37:41,563 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:37:41,563 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:37:41,564 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:37:41,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:37:41,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:37:41,564 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:37:41,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:37:41,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:37:41,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:37:41,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:37:41,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:37:41,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:37:41,566 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:37:41,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:37:41,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:37:41,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:37:41,567 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_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2021-11-07 01:37:41,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:37:41,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:37:41,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:37:41,900 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:37:41,901 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:37:41,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-07 01:37:42,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data/251984280/d2d5d0a598dd484bae2e552efe6e1e2a/FLAGc9fc00be0 [2021-11-07 01:37:42,601 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:37:42,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-07 01:37:42,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data/251984280/d2d5d0a598dd484bae2e552efe6e1e2a/FLAGc9fc00be0 [2021-11-07 01:37:42,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data/251984280/d2d5d0a598dd484bae2e552efe6e1e2a [2021-11-07 01:37:42,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:37:42,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:37:42,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:37:42,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:37:42,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:37:42,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:37:42" (1/1) ... [2021-11-07 01:37:42,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c25bbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:42, skipping insertion in model container [2021-11-07 01:37:42,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:37:42" (1/1) ... [2021-11-07 01:37:42,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:37:42,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:37:43,368 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_cbd02515-05f8-4124-991a-d595c8beaaba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-07 01:37:43,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:37:43,520 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) [2021-11-07 01:37:43,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14d304c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:43, skipping insertion in model container [2021-11-07 01:37:43,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:37:43,530 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:37:43,532 INFO L168 Benchmark]: Toolchain (without parser) took 664.58 ms. Allocated memory is still 104.9 MB. Free memory was 69.2 MB in the beginning and 71.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:37:43,533 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory was 59.8 MB in the beginning and 59.7 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:37:43,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.81 ms. Allocated memory is still 104.9 MB. Free memory was 69.0 MB in the beginning and 71.1 MB in the end (delta: -2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:37:43,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory was 59.8 MB in the beginning and 59.7 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 661.81 ms. Allocated memory is still 104.9 MB. Free memory was 69.0 MB in the beginning and 71.1 MB in the end (delta: -2.1 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: 752]: 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_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:37:46,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:37:46,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:37:46,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:37:46,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:37:46,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:37:46,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:37:46,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:37:46,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:37:46,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:37:46,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:37:46,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:37:46,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:37:46,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:37:46,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:37:46,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:37:46,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:37:46,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:37:46,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:37:46,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:37:46,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:37:46,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:37:46,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:37:46,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:37:46,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:37:46,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:37:46,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:37:46,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:37:46,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:37:46,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:37:46,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:37:46,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:37:46,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:37:46,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:37:46,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:37:46,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:37:46,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:37:46,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:37:46,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:37:46,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:37:46,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:37:46,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:37:46,307 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:37:46,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:37:46,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:37:46,310 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:37:46,310 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:37:46,311 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:37:46,311 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:37:46,311 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:37:46,311 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:37:46,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:37:46,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:37:46,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:37:46,315 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:37:46,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:37:46,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:37:46,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:37:46,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:37:46,316 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:37:46,316 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:37:46,316 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:37:46,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:37:46,317 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:37:46,317 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:37:46,317 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:37:46,317 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:37:46,318 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:37:46,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:37:46,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:37:46,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:37:46,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:37:46,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:37:46,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:37:46,319 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:37:46,320 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:46,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:37:46,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:37:46,320 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_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2021-11-07 01:37:46,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:37:46,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:37:46,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:37:46,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:37:46,831 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:37:46,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-07 01:37:46,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data/c8afb0a16/407f02eff9cf48e3ba57d172a4b0e9b8/FLAG026cfdae8 [2021-11-07 01:37:47,780 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:37:47,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-07 01:37:47,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data/c8afb0a16/407f02eff9cf48e3ba57d172a4b0e9b8/FLAG026cfdae8 [2021-11-07 01:37:47,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/data/c8afb0a16/407f02eff9cf48e3ba57d172a4b0e9b8 [2021-11-07 01:37:47,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:37:47,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:37:47,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:37:47,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:37:47,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:37:47,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:37:47" (1/1) ... [2021-11-07 01:37:47,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1923e714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:47, skipping insertion in model container [2021-11-07 01:37:47,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:37:47" (1/1) ... [2021-11-07 01:37:47,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:37:48,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:37:48,629 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_cbd02515-05f8-4124-991a-d595c8beaaba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-07 01:37:48,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:37:48,831 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:37:48,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:37:48,898 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_cbd02515-05f8-4124-991a-d595c8beaaba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-07 01:37:49,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:37:49,068 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:37:49,102 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_cbd02515-05f8-4124-991a-d595c8beaaba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-07 01:37:49,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:37:49,231 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:37:49,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49 WrapperNode [2021-11-07 01:37:49,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:37:49,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:37:49,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:37:49,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:37:49,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:37:49,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:37:49,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:37:49,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:37:49,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:37:49,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:37:49,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:37:49,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:37:49,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (1/1) ... [2021-11-07 01:37:49,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:37:49,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:37:49,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:37:49,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:37:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:37:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:37:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:37:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:37:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:37:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:37:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:37:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:37:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:37:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:37:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:37:56,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:37:56,244 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-11-07 01:37:56,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:56 BoogieIcfgContainer [2021-11-07 01:37:56,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:37:56,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:37:56,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:37:56,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:37:56,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:37:47" (1/3) ... [2021-11-07 01:37:56,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9631f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:56, skipping insertion in model container [2021-11-07 01:37:56,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:49" (2/3) ... [2021-11-07 01:37:56,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9631f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:56, skipping insertion in model container [2021-11-07 01:37:56,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:56" (3/3) ... [2021-11-07 01:37:56,263 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2021-11-07 01:37:56,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:37:56,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 657 error locations. [2021-11-07 01:37:56,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:37:56,376 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:37:56,382 INFO L340 AbstractCegarLoop]: Starting to check reachability of 657 error locations. [2021-11-07 01:37:56,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 1301 states, 643 states have (on average 2.244167962674961) internal successors, (1443), 1300 states have internal predecessors, (1443), 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) [2021-11-07 01:37:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:37:56,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:56,451 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:37:56,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:37:56,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:56,459 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-07 01:37:56,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:56,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912295848] [2021-11-07 01:37:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:56,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:56,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:56,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:56,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:37:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:56,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:37:56,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:56,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:56,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:56,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912295848] [2021-11-07 01:37:56,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912295848] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:56,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:56,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:37:56,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919142033] [2021-11-07 01:37:56,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:37:56,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:56,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:37:56,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:37:56,866 INFO L87 Difference]: Start difference. First operand has 1301 states, 643 states have (on average 2.244167962674961) internal successors, (1443), 1300 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:57,017 INFO L93 Difference]: Finished difference Result 1283 states and 1348 transitions. [2021-11-07 01:37:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:37:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 01:37:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:57,045 INFO L225 Difference]: With dead ends: 1283 [2021-11-07 01:37:57,046 INFO L226 Difference]: Without dead ends: 1281 [2021-11-07 01:37:57,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:37:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-11-07 01:37:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2021-11-07 01:37:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 634 states have (on average 2.1230283911671926) internal successors, (1346), 1280 states have internal predecessors, (1346), 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) [2021-11-07 01:37:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1346 transitions. [2021-11-07 01:37:57,192 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1346 transitions. Word has length 5 [2021-11-07 01:37:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:57,193 INFO L470 AbstractCegarLoop]: Abstraction has 1281 states and 1346 transitions. [2021-11-07 01:37:57,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:57,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1346 transitions. [2021-11-07 01:37:57,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:37:57,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:57,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:37:57,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:57,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:57,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:37:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-07 01:37:57,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:57,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673857474] [2021-11-07 01:37:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:57,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:57,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:57,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:57,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:37:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:57,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:37:57,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:57,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:57,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:57,711 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:57,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673857474] [2021-11-07 01:37:57,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673857474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:57,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:57,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:37:57,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403119025] [2021-11-07 01:37:57,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:37:57,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:37:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:57,716 INFO L87 Difference]: Start difference. First operand 1281 states and 1346 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:00,840 INFO L93 Difference]: Finished difference Result 1318 states and 1396 transitions. [2021-11-07 01:38:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:38:00,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 01:38:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:00,853 INFO L225 Difference]: With dead ends: 1318 [2021-11-07 01:38:00,857 INFO L226 Difference]: Without dead ends: 1318 [2021-11-07 01:38:00,858 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:38:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-11-07 01:38:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1264. [2021-11-07 01:38:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 710 states have (on average 1.9549295774647888) internal successors, (1388), 1263 states have internal predecessors, (1388), 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) [2021-11-07 01:38:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1388 transitions. [2021-11-07 01:38:00,902 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1388 transitions. Word has length 5 [2021-11-07 01:38:00,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:00,903 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1388 transitions. [2021-11-07 01:38:00,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1388 transitions. [2021-11-07 01:38:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:38:00,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:00,904 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:38:00,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:01,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:01,116 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:01,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:01,117 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-07 01:38:01,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:01,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198093089] [2021-11-07 01:38:01,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:01,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:01,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:01,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:01,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:38:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:01,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:38:01,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:01,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:38:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:01,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:01,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:01,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198093089] [2021-11-07 01:38:01,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198093089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:01,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:01,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:38:01,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14060008] [2021-11-07 01:38:01,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:38:01,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:01,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:38:01,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:01,422 INFO L87 Difference]: Start difference. First operand 1264 states and 1388 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:08,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:08,682 INFO L93 Difference]: Finished difference Result 1621 states and 1766 transitions. [2021-11-07 01:38:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:38:08,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 01:38:08,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:08,694 INFO L225 Difference]: With dead ends: 1621 [2021-11-07 01:38:08,694 INFO L226 Difference]: Without dead ends: 1621 [2021-11-07 01:38:08,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:08,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-11-07 01:38:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1420. [2021-11-07 01:38:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 876 states have (on average 1.9337899543378996) internal successors, (1694), 1419 states have internal predecessors, (1694), 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) [2021-11-07 01:38:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1694 transitions. [2021-11-07 01:38:08,742 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1694 transitions. Word has length 5 [2021-11-07 01:38:08,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:08,743 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 1694 transitions. [2021-11-07 01:38:08,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:08,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1694 transitions. [2021-11-07 01:38:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:38:08,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:08,744 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:38:08,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:08,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:08,965 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash 891404513, now seen corresponding path program 1 times [2021-11-07 01:38:08,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:08,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185707919] [2021-11-07 01:38:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:08,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:08,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:08,969 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:08,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:38:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:09,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:38:09,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:09,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:09,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:09,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185707919] [2021-11-07 01:38:09,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185707919] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:09,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:09,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:38:09,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352183170] [2021-11-07 01:38:09,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:38:09,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:38:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:09,157 INFO L87 Difference]: Start difference. First operand 1420 states and 1694 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:09,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:09,271 INFO L93 Difference]: Finished difference Result 2783 states and 3320 transitions. [2021-11-07 01:38:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:38:09,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:38:09,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:09,289 INFO L225 Difference]: With dead ends: 2783 [2021-11-07 01:38:09,289 INFO L226 Difference]: Without dead ends: 2783 [2021-11-07 01:38:09,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:09,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2021-11-07 01:38:09,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2254. [2021-11-07 01:38:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1710 states have (on average 1.9415204678362572) internal successors, (3320), 2253 states have internal predecessors, (3320), 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) [2021-11-07 01:38:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3320 transitions. [2021-11-07 01:38:09,364 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3320 transitions. Word has length 6 [2021-11-07 01:38:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:09,365 INFO L470 AbstractCegarLoop]: Abstraction has 2254 states and 3320 transitions. [2021-11-07 01:38:09,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3320 transitions. [2021-11-07 01:38:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:38:09,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:09,367 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:09,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:09,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:09,579 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:09,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-07 01:38:09,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:09,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712396407] [2021-11-07 01:38:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:09,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:09,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:09,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:09,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:38:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:09,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:38:09,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:09,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:09,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:09,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712396407] [2021-11-07 01:38:09,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712396407] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:09,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:09,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:38:09,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737700088] [2021-11-07 01:38:09,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:38:09,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:38:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:09,866 INFO L87 Difference]: Start difference. First operand 2254 states and 3320 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:09,915 INFO L93 Difference]: Finished difference Result 2194 states and 3234 transitions. [2021-11-07 01:38:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:38:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 01:38:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:09,932 INFO L225 Difference]: With dead ends: 2194 [2021-11-07 01:38:09,932 INFO L226 Difference]: Without dead ends: 2194 [2021-11-07 01:38:09,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2021-11-07 01:38:09,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2194. [2021-11-07 01:38:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 1674 states have (on average 1.9318996415770608) internal successors, (3234), 2193 states have internal predecessors, (3234), 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) [2021-11-07 01:38:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3234 transitions. [2021-11-07 01:38:09,996 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3234 transitions. Word has length 11 [2021-11-07 01:38:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:09,997 INFO L470 AbstractCegarLoop]: Abstraction has 2194 states and 3234 transitions. [2021-11-07 01:38:09,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3234 transitions. [2021-11-07 01:38:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:38:09,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:09,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:10,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:38:10,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:10,216 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:10,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-07 01:38:10,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:10,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656798424] [2021-11-07 01:38:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:10,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:10,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:10,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:10,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:38:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:10,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:38:10,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:10,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:10,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:10,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656798424] [2021-11-07 01:38:10,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656798424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:10,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:10,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:38:10,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113621458] [2021-11-07 01:38:10,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:38:10,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:10,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:38:10,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:38:10,538 INFO L87 Difference]: Start difference. First operand 2194 states and 3234 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:10,658 INFO L93 Difference]: Finished difference Result 2166 states and 3178 transitions. [2021-11-07 01:38:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:38:10,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 01:38:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:10,673 INFO L225 Difference]: With dead ends: 2166 [2021-11-07 01:38:10,674 INFO L226 Difference]: Without dead ends: 2166 [2021-11-07 01:38:10,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:38:10,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-11-07 01:38:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2164. [2021-11-07 01:38:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 1658 states have (on average 1.9155609167671894) internal successors, (3176), 2163 states have internal predecessors, (3176), 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) [2021-11-07 01:38:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 3176 transitions. [2021-11-07 01:38:10,742 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 3176 transitions. Word has length 13 [2021-11-07 01:38:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:10,743 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 3176 transitions. [2021-11-07 01:38:10,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 3176 transitions. [2021-11-07 01:38:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:38:10,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:10,745 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:10,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:10,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:10,958 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:10,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:10,961 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-07 01:38:10,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:10,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913116677] [2021-11-07 01:38:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:10,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:10,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:10,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:11,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:38:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:11,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:38:11,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:11,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:38:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:11,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:11,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:11,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913116677] [2021-11-07 01:38:11,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913116677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:11,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:11,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:38:11,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632422743] [2021-11-07 01:38:11,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:38:11,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:11,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:38:11,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:11,508 INFO L87 Difference]: Start difference. First operand 2164 states and 3176 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:15,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:15,087 INFO L93 Difference]: Finished difference Result 2851 states and 4037 transitions. [2021-11-07 01:38:15,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:38:15,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:38:15,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:15,106 INFO L225 Difference]: With dead ends: 2851 [2021-11-07 01:38:15,106 INFO L226 Difference]: Without dead ends: 2851 [2021-11-07 01:38:15,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:38:15,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-11-07 01:38:15,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2160. [2021-11-07 01:38:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 1658 states have (on average 1.910735826296743) internal successors, (3168), 2159 states have internal predecessors, (3168), 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) [2021-11-07 01:38:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3168 transitions. [2021-11-07 01:38:15,170 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3168 transitions. Word has length 27 [2021-11-07 01:38:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:15,171 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 3168 transitions. [2021-11-07 01:38:15,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3168 transitions. [2021-11-07 01:38:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:38:15,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:15,172 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:15,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:15,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:15,386 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:15,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:15,387 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-07 01:38:15,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:15,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539043068] [2021-11-07 01:38:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:15,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:15,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:15,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:38:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:15,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:38:15,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:15,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:38:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:15,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:16,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:16,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539043068] [2021-11-07 01:38:16,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539043068] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:16,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:16,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:38:16,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321703658] [2021-11-07 01:38:16,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:38:16,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:38:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:38:16,437 INFO L87 Difference]: Start difference. First operand 2160 states and 3168 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:24,642 INFO L93 Difference]: Finished difference Result 2460 states and 3373 transitions. [2021-11-07 01:38:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:38:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:38:24,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:24,658 INFO L225 Difference]: With dead ends: 2460 [2021-11-07 01:38:24,659 INFO L226 Difference]: Without dead ends: 2460 [2021-11-07 01:38:24,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:38:24,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-11-07 01:38:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2156. [2021-11-07 01:38:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1658 states have (on average 1.9059107358262968) internal successors, (3160), 2155 states have internal predecessors, (3160), 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) [2021-11-07 01:38:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3160 transitions. [2021-11-07 01:38:24,747 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3160 transitions. Word has length 27 [2021-11-07 01:38:24,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:24,748 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3160 transitions. [2021-11-07 01:38:24,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3160 transitions. [2021-11-07 01:38:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 01:38:24,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:24,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:24,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:24,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:24,967 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:24,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:24,967 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-07 01:38:24,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:24,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906612441] [2021-11-07 01:38:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:24,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:24,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:24,970 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:24,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:38:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:25,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:38:25,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:25,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:25,564 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:25,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906612441] [2021-11-07 01:38:25,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906612441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:25,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:25,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:38:25,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027287035] [2021-11-07 01:38:25,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:38:25,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:25,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:38:25,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:25,567 INFO L87 Difference]: Start difference. First operand 2156 states and 3160 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:25,645 INFO L93 Difference]: Finished difference Result 2144 states and 3140 transitions. [2021-11-07 01:38:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:38:25,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 01:38:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:25,660 INFO L225 Difference]: With dead ends: 2144 [2021-11-07 01:38:25,660 INFO L226 Difference]: Without dead ends: 2144 [2021-11-07 01:38:25,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:38:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2021-11-07 01:38:25,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2144. [2021-11-07 01:38:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 1646 states have (on average 1.9076549210206561) internal successors, (3140), 2143 states have internal predecessors, (3140), 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) [2021-11-07 01:38:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 3140 transitions. [2021-11-07 01:38:25,715 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 3140 transitions. Word has length 42 [2021-11-07 01:38:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:25,718 INFO L470 AbstractCegarLoop]: Abstraction has 2144 states and 3140 transitions. [2021-11-07 01:38:25,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 3140 transitions. [2021-11-07 01:38:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:38:25,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:25,724 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:25,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:25,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:25,939 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:25,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:25,939 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-07 01:38:25,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:25,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488382254] [2021-11-07 01:38:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:25,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:25,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:25,941 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:25,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:38:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:26,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:38:26,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:26,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:27,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:27,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488382254] [2021-11-07 01:38:27,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488382254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:27,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:27,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:38:27,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149249564] [2021-11-07 01:38:27,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:38:27,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:27,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:38:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:38:27,222 INFO L87 Difference]: Start difference. First operand 2144 states and 3140 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:27,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:27,337 INFO L93 Difference]: Finished difference Result 1960 states and 2785 transitions. [2021-11-07 01:38:27,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:38:27,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:38:27,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:27,350 INFO L225 Difference]: With dead ends: 1960 [2021-11-07 01:38:27,351 INFO L226 Difference]: Without dead ends: 1960 [2021-11-07 01:38:27,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:38:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2021-11-07 01:38:27,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1960. [2021-11-07 01:38:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1462 states have (on average 1.9049247606019153) internal successors, (2785), 1959 states have internal predecessors, (2785), 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) [2021-11-07 01:38:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2785 transitions. [2021-11-07 01:38:27,400 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2785 transitions. Word has length 50 [2021-11-07 01:38:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:27,401 INFO L470 AbstractCegarLoop]: Abstraction has 1960 states and 2785 transitions. [2021-11-07 01:38:27,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2785 transitions. [2021-11-07 01:38:27,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 01:38:27,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:27,403 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:27,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:27,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:27,618 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-07 01:38:27,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:27,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989880652] [2021-11-07 01:38:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:27,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:27,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:27,622 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:27,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:38:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:28,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:38:28,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:28,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:38:28,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:38:28,979 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:38:28,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:38:28,987 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:38:28,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-07 01:38:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:29,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:34,404 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:34,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989880652] [2021-11-07 01:38:34,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989880652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:34,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:34,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:38:34,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296112348] [2021-11-07 01:38:34,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:38:34,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:34,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:38:34,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-07 01:38:34,410 INFO L87 Difference]: Start difference. First operand 1960 states and 2785 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:53,083 INFO L93 Difference]: Finished difference Result 2626 states and 3583 transitions. [2021-11-07 01:38:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:38:53,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 01:38:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:53,100 INFO L225 Difference]: With dead ends: 2626 [2021-11-07 01:38:53,101 INFO L226 Difference]: Without dead ends: 2626 [2021-11-07 01:38:53,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-07 01:38:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-11-07 01:38:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2118. [2021-11-07 01:38:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1658 states have (on average 1.8522316043425815) internal successors, (3071), 2117 states have internal predecessors, (3071), 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) [2021-11-07 01:38:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 3071 transitions. [2021-11-07 01:38:53,152 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 3071 transitions. Word has length 53 [2021-11-07 01:38:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:53,153 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 3071 transitions. [2021-11-07 01:38:53,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 3071 transitions. [2021-11-07 01:38:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:38:53,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:53,155 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:53,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:53,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:53,369 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:38:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-07 01:38:53,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:53,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893892024] [2021-11-07 01:38:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:53,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:53,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:53,373 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:53,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:38:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:53,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:38:53,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:53,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:38:54,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-07 01:38:54,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-07 01:38:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:54,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:54,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:54,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893892024] [2021-11-07 01:38:54,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893892024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:54,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:54,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:38:54,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239484512] [2021-11-07 01:38:54,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:38:54,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:54,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:38:54,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:38:54,276 INFO L87 Difference]: Start difference. First operand 2118 states and 3071 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:00,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:00,844 INFO L93 Difference]: Finished difference Result 2749 states and 3837 transitions. [2021-11-07 01:39:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:39:00,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:39:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:00,862 INFO L225 Difference]: With dead ends: 2749 [2021-11-07 01:39:00,862 INFO L226 Difference]: Without dead ends: 2749 [2021-11-07 01:39:00,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:39:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-07 01:39:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2117. [2021-11-07 01:39:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 1658 states have (on average 1.8510253317249699) internal successors, (3069), 2116 states have internal predecessors, (3069), 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) [2021-11-07 01:39:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3069 transitions. [2021-11-07 01:39:00,946 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3069 transitions. Word has length 59 [2021-11-07 01:39:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:00,947 INFO L470 AbstractCegarLoop]: Abstraction has 2117 states and 3069 transitions. [2021-11-07 01:39:00,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3069 transitions. [2021-11-07 01:39:00,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:39:00,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:00,948 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:00,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:01,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:01,165 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:39:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:01,165 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-07 01:39:01,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:01,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176742236] [2021-11-07 01:39:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:01,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:01,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:01,167 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:01,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:39:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:01,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:39:01,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:01,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:39:01,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-07 01:39:01,816 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 [2021-11-07 01:39:01,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-07 01:39:01,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-07 01:39:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:01,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:02,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:02,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176742236] [2021-11-07 01:39:02,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176742236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:02,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:02,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:39:02,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436620374] [2021-11-07 01:39:02,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:39:02,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:02,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:39:02,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:39:02,465 INFO L87 Difference]: Start difference. First operand 2117 states and 3069 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:20,489 INFO L93 Difference]: Finished difference Result 2494 states and 3479 transitions. [2021-11-07 01:39:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:39:20,491 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 01:39:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:20,498 INFO L225 Difference]: With dead ends: 2494 [2021-11-07 01:39:20,498 INFO L226 Difference]: Without dead ends: 2494 [2021-11-07 01:39:20,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:39:20,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2021-11-07 01:39:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2116. [2021-11-07 01:39:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1658 states have (on average 1.8498190591073582) internal successors, (3067), 2115 states have internal predecessors, (3067), 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) [2021-11-07 01:39:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 3067 transitions. [2021-11-07 01:39:20,542 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 3067 transitions. Word has length 60 [2021-11-07 01:39:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:20,543 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 3067 transitions. [2021-11-07 01:39:20,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 3067 transitions. [2021-11-07 01:39:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:39:20,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:20,544 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:20,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:20,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:20,758 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:39:20,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-07 01:39:20,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:20,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506938075] [2021-11-07 01:39:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:20,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:20,761 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:20,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:39:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:21,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:21,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:21,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:21,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:21,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506938075] [2021-11-07 01:39:21,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506938075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:21,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:21,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:39:21,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585473485] [2021-11-07 01:39:21,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:39:21,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:39:21,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:39:21,605 INFO L87 Difference]: Start difference. First operand 2116 states and 3067 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:21,852 INFO L93 Difference]: Finished difference Result 3720 states and 5343 transitions. [2021-11-07 01:39:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:39:21,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 01:39:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:21,863 INFO L225 Difference]: With dead ends: 3720 [2021-11-07 01:39:21,863 INFO L226 Difference]: Without dead ends: 3720 [2021-11-07 01:39:21,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:39:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-11-07 01:39:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 2134. [2021-11-07 01:39:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 1676 states have (on average 1.840692124105012) internal successors, (3085), 2133 states have internal predecessors, (3085), 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) [2021-11-07 01:39:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 3085 transitions. [2021-11-07 01:39:21,907 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 3085 transitions. Word has length 64 [2021-11-07 01:39:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:21,908 INFO L470 AbstractCegarLoop]: Abstraction has 2134 states and 3085 transitions. [2021-11-07 01:39:21,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 3085 transitions. [2021-11-07 01:39:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:39:21,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:21,909 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:21,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:22,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:22,122 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:39:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-07 01:39:22,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:22,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054445479] [2021-11-07 01:39:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:22,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:22,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:22,124 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:22,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:39:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:22,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:22,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:22,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:23,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:23,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054445479] [2021-11-07 01:39:23,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054445479] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:23,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1620471846] [2021-11-07 01:39:23,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:23,048 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:23,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:23,050 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:23,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:39:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:23,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:23,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:23,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:24,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:24,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1620471846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:24,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913806722] [2021-11-07 01:39:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:24,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:39:24,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:24,105 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:39:24,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 01:39:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:24,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:39:24,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:25,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:25,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913806722] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:25,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:39:25,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 01:39:25,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534293289] [2021-11-07 01:39:25,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:39:25,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:39:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:39:25,308 INFO L87 Difference]: Start difference. First operand 2134 states and 3085 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 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) [2021-11-07 01:39:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:26,686 INFO L93 Difference]: Finished difference Result 5348 states and 7643 transitions. [2021-11-07 01:39:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:39:26,688 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 01:39:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:26,698 INFO L225 Difference]: With dead ends: 5348 [2021-11-07 01:39:26,698 INFO L226 Difference]: Without dead ends: 5348 [2021-11-07 01:39:26,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=364, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:39:26,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2021-11-07 01:39:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 2188. [2021-11-07 01:39:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1730 states have (on average 1.8213872832369942) internal successors, (3151), 2187 states have internal predecessors, (3151), 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) [2021-11-07 01:39:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3151 transitions. [2021-11-07 01:39:26,774 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3151 transitions. Word has length 66 [2021-11-07 01:39:26,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:26,774 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 3151 transitions. [2021-11-07 01:39:26,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 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) [2021-11-07 01:39:26,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3151 transitions. [2021-11-07 01:39:26,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:39:26,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:26,776 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:26,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:26,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:27,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:27,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:39:27,390 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:39:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-07 01:39:27,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:27,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275664235] [2021-11-07 01:39:27,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:39:27,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:27,392 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:27,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:39:28,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:39:28,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:39:28,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:39:28,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:28,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:29,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:29,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275664235] [2021-11-07 01:39:29,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275664235] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:29,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [46529478] [2021-11-07 01:39:29,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:39:29,474 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:29,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:29,475 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:29,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:39:31,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:39:31,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:39:31,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:39:31,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:31,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:31,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [46529478] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:31,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807495861] [2021-11-07 01:39:31,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:39:31,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:39:31,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:31,601 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:39:31,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 01:39:38,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:39:38,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:39:38,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 01:39:38,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:38,490 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:39:38,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-07 01:39:38,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-07 01:39:38,942 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 01:39:38,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 26 [2021-11-07 01:39:39,157 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:39:39,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-07 01:39:39,342 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:39:39,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-07 01:39:40,823 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:39:40,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-07 01:39:41,025 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:39:41,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-07 01:39:41,213 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:39:41,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 47 [2021-11-07 01:39:41,519 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:39:41,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 27 [2021-11-07 01:39:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:39:41,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:23,459 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277_85| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277_85| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))))))))))) is different from false [2021-11-07 01:40:25,769 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277_89| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277_89| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))))))))) (_ bv1 1)))) is different from false [2021-11-07 01:40:25,843 INFO L354 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2021-11-07 01:40:25,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-07 01:40:42,172 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277_89| (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277_89| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)) |c_ULTIMATE.start_main_#t~mem35.base|)) is different from false [2021-11-07 01:40:44,188 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277_89| (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~user~0.base) .cse1))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277_89| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse1) .cse0)))) is different from false [2021-11-07 01:40:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 4 refuted. 2 times theorem prover too weak. 3 trivial. 11 not checked. [2021-11-07 01:40:44,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807495861] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:44,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:40:44,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 12] total 37 [2021-11-07 01:40:44,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639637836] [2021-11-07 01:40:44,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-07 01:40:44,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-07 01:40:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=886, Unknown=27, NotChecked=260, Total=1332 [2021-11-07 01:40:44,997 INFO L87 Difference]: Start difference. First operand 2188 states and 3151 transitions. Second operand has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:47,036 INFO L93 Difference]: Finished difference Result 7477 states and 10466 transitions. [2021-11-07 01:42:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-07 01:42:47,037 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:42:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:47,053 INFO L225 Difference]: With dead ends: 7477 [2021-11-07 01:42:47,053 INFO L226 Difference]: Without dead ends: 7477 [2021-11-07 01:42:47,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 376 SyntacticMatches, 7 SemanticMatches, 112 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3809 ImplicationChecksByTransitivity, 85.9s TimeCoverageRelationStatistics Valid=2240, Invalid=9738, Unknown=28, NotChecked=876, Total=12882 [2021-11-07 01:42:47,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2021-11-07 01:42:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 2283. [2021-11-07 01:42:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 1826 states have (on average 1.7968236582694415) internal successors, (3281), 2282 states have internal predecessors, (3281), 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) [2021-11-07 01:42:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3281 transitions. [2021-11-07 01:42:47,149 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3281 transitions. Word has length 70 [2021-11-07 01:42:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:47,150 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 3281 transitions. [2021-11-07 01:42:47,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3281 transitions. [2021-11-07 01:42:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:42:47,157 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:47,157 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:47,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:47,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:47,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:47,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:47,764 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:42:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996129, now seen corresponding path program 1 times [2021-11-07 01:42:47,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:47,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153728494] [2021-11-07 01:42:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:47,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:47,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:47,766 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:47,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:42:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:48,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:42:48,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:49,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:50,284 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:50,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153728494] [2021-11-07 01:42:50,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153728494] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:50,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1058093013] [2021-11-07 01:42:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:50,285 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:42:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:42:50,288 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:42:50,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:42:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:51,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:42:51,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:51,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:51,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1058093013] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:51,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764974367] [2021-11-07 01:42:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:51,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:42:51,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:42:51,815 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:42:51,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 01:42:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:52,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:42:52,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:52,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:56,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764974367] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:56,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:42:56,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 49 [2021-11-07 01:42:56,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638770431] [2021-11-07 01:42:56,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 01:42:56,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:56,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 01:42:56,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=1760, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:42:56,714 INFO L87 Difference]: Start difference. First operand 2283 states and 3281 transitions. Second operand has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 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) [2021-11-07 01:43:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:38,251 INFO L93 Difference]: Finished difference Result 20469 states and 28947 transitions. [2021-11-07 01:43:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-07 01:43:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 01:43:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:38,282 INFO L225 Difference]: With dead ends: 20469 [2021-11-07 01:43:38,282 INFO L226 Difference]: Without dead ends: 20469 [2021-11-07 01:43:38,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2885 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=3007, Invalid=8335, Unknown=0, NotChecked=0, Total=11342 [2021-11-07 01:43:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20469 states. [2021-11-07 01:43:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20469 to 2475. [2021-11-07 01:43:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2018 states have (on average 1.7329038652130822) internal successors, (3497), 2474 states have internal predecessors, (3497), 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) [2021-11-07 01:43:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 3497 transitions. [2021-11-07 01:43:38,435 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 3497 transitions. Word has length 78 [2021-11-07 01:43:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:38,436 INFO L470 AbstractCegarLoop]: Abstraction has 2475 states and 3497 transitions. [2021-11-07 01:43:38,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 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) [2021-11-07 01:43:38,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 3497 transitions. [2021-11-07 01:43:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 01:43:38,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:38,437 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:38,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:38,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:38,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:39,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:39,043 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 653 more)] === [2021-11-07 01:43:39,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:39,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2005712417, now seen corresponding path program 2 times [2021-11-07 01:43:39,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:39,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584876860] [2021-11-07 01:43:39,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:43:39,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:39,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:39,045 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:39,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:43:40,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:43:40,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:43:40,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 01:43:40,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:41,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:47,848 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:43:47,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584876860] [2021-11-07 01:43:47,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584876860] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:47,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [91221552] [2021-11-07 01:43:47,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:43:47,849 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:43:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:43:47,850 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:43:47,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 01:43:49,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:43:49,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:43:49,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 01:43:49,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:50,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:52,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [91221552] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:52,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942308077] [2021-11-07 01:43:52,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:43:52,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:43:52,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:43:52,050 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:43:52,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd02515-05f8-4124-991a-d595c8beaaba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 01:44:09,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:44:09,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:44:09,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-07 01:44:09,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:44:09,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:44:09,625 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:44:09,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-07 01:44:09,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-07 01:44:09,783 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 [2021-11-07 01:44:10,546 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-07 01:44:10,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2021-11-07 01:44:10,617 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 01:44:10,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 51 [2021-11-07 01:44:11,015 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:11,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:12,210 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:12,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:14,589 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:14,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:14,640 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:14,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:15,072 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:15,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:15,137 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:15,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:15,534 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:15,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:15,590 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:15,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:16,048 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:16,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:16,125 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:16,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:18,303 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:18,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:18,363 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:18,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:18,797 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:18,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:21,174 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:21,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:23,846 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:23,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:24,980 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:24,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:27,675 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:27,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:27,729 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:27,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:29,301 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:29,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:30,974 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:30,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:31,343 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:31,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:36,006 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:36,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:39,454 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:39,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:39,502 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:39,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:39,888 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:39,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:45,181 WARN L207 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2021-11-07 01:44:45,182 INFO L354 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2021-11-07 01:44:45,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 78 [2021-11-07 01:44:45,628 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:45,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:49,226 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:49,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:54,006 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:54,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:54,060 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:54,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:57,589 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:57,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:44:57,648 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:44:57,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:44:59,137 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:44:59,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:03,192 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:03,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:03,574 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:03,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:07,486 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:07,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:09,510 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:09,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:09,562 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:09,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:12,336 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:12,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:12,390 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:12,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:12,774 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:12,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:12,827 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:12,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:13,222 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:13,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:15,365 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:15,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:18,311 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:18,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:22,485 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:22,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:22,921 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:22,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:23,008 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:23,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:23,438 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:23,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:26,830 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:26,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:28,423 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:28,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:28,479 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:28,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:28,912 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:28,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:31,165 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:31,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:33,447 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:45:33,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:45:33,498 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:33,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:45:33,938 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:45:33,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 78 [2021-11-07 01:45:34,010 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-07 01:45:34,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 101 [2021-11-07 01:45:34,797 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:45:34,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 62 [2021-11-07 01:45:34,806 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:45:34,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2021-11-07 01:45:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-07 01:45:34,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:47,289 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1) (bvadd v_subst_2 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse2 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr277| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse4 (bvadd v_subst_1 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3))) c_ULTIMATE.start_main_~user~0.base) .cse5)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse5)))))) is different from false [2021-11-07 01:46:18,781 WARN L207 SmtUtils]: Spent 6.62 s on a formula simplification that was a NOOP. DAG size: 46