./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0134.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE --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 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE --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 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:02:04,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:02:04,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:02:04,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:02:04,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:02:04,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:02:04,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:02:04,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:02:04,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:02:04,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:02:04,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:02:04,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:02:04,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:02:04,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:02:04,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:02:04,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:02:04,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:02:04,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:02:04,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:02:04,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:02:04,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:02:04,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:02:04,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:02:04,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:02:04,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:02:04,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:02:04,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:02:04,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:02:04,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:02:04,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:02:04,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:02:04,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:02:04,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:02:04,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:02:04,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:02:04,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:02:04,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:02:04,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:02:04,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:02:04,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:02:04,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:02:04,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 11:02:04,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:02:04,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:02:04,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:02:04,469 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:02:04,469 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:02:04,470 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:02:04,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:02:04,470 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:02:04,470 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:02:04,471 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:02:04,471 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:02:04,471 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:02:04,471 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:02:04,472 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:02:04,472 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:02:04,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 11:02:04,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 11:02:04,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:02:04,473 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:02:04,474 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 11:02:04,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:02:04,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:02:04,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:02:04,475 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 11:02:04,475 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 11:02:04,475 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 11:02:04,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:02:04,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:02:04,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:02:04,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:02:04,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:02:04,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:02:04,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:02:04,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:02:04,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:02:04,478 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:02:04,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:02:04,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:02:04,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:02:04,479 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_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-10-24 11:02:04,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:02:04,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:02:04,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:02:04,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:02:04,758 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:02:04,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/memsafety/test-0134.i [2021-10-24 11:02:04,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data/9d4e2ae0e/82cfa389bcc74ba993ec9c718d78624b/FLAG855c6324e [2021-10-24 11:02:05,446 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:02:05,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/sv-benchmarks/c/memsafety/test-0134.i [2021-10-24 11:02:05,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data/9d4e2ae0e/82cfa389bcc74ba993ec9c718d78624b/FLAG855c6324e [2021-10-24 11:02:05,693 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data/9d4e2ae0e/82cfa389bcc74ba993ec9c718d78624b [2021-10-24 11:02:05,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:02:05,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:02:05,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:02:05,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:02:05,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:02:05,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:02:05" (1/1) ... [2021-10-24 11:02:05,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709cfb21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:05, skipping insertion in model container [2021-10-24 11:02:05,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:02:05" (1/1) ... [2021-10-24 11:02:05,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:02:05,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:02:06,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:02:06,283 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) [2021-10-24 11:02:06,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@371f18ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:06, skipping insertion in model container [2021-10-24 11:02:06,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:02:06,286 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 11:02:06,290 INFO L168 Benchmark]: Toolchain (without parser) took 588.60 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 60.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:06,291 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:02:06,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.28 ms. Allocated memory is still 88.1 MB. Free memory was 64.8 MB in the beginning and 60.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:06,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 585.28 ms. Allocated memory is still 88.1 MB. Free memory was 64.8 MB in the beginning and 60.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 585]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:02:09,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:02:09,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:02:09,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:02:09,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:02:09,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:02:09,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:02:09,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:02:09,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:02:09,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:02:09,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:02:09,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:02:09,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:02:09,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:02:09,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:02:09,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:02:09,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:02:09,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:02:09,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:02:09,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:02:09,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:02:09,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:02:09,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:02:09,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:02:09,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:02:09,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:02:09,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:02:09,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:02:09,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:02:09,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:02:09,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:02:09,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:02:09,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:02:09,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:02:09,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:02:09,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:02:09,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:02:09,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:02:09,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:02:09,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:02:09,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:02:09,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 11:02:09,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:02:09,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:02:09,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:02:09,570 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:02:09,570 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:02:09,571 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:02:09,571 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:02:09,571 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:02:09,571 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:02:09,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 11:02:09,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 11:02:09,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:02:09,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:02:09,576 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 11:02:09,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:02:09,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:02:09,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:02:09,577 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 11:02:09,577 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 11:02:09,577 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 11:02:09,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:02:09,578 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:02:09,578 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 11:02:09,579 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 11:02:09,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:02:09,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:02:09,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:02:09,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 11:02:09,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:02:09,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:02:09,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:02:09,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:02:09,582 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 11:02:09,582 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 11:02:09,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:02:09,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:02:09,583 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_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-10-24 11:02:10,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:02:10,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:02:10,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:02:10,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:02:10,101 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:02:10,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/memsafety/test-0134.i [2021-10-24 11:02:10,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data/c384da162/089ff541823a493d82077d4380b94812/FLAG460fbd73b [2021-10-24 11:02:10,957 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:02:10,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/sv-benchmarks/c/memsafety/test-0134.i [2021-10-24 11:02:10,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data/c384da162/089ff541823a493d82077d4380b94812/FLAG460fbd73b [2021-10-24 11:02:11,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/data/c384da162/089ff541823a493d82077d4380b94812 [2021-10-24 11:02:11,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:02:11,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:02:11,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:02:11,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:02:11,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:02:11,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:02:11" (1/1) ... [2021-10-24 11:02:11,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35871b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:11, skipping insertion in model container [2021-10-24 11:02:11,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:02:11" (1/1) ... [2021-10-24 11:02:11,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:02:11,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:02:11,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:02:11,880 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 11:02:11,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:02:11,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:02:11,977 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:02:12,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:02:12,092 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:02:12,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12 WrapperNode [2021-10-24 11:02:12,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:02:12,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:02:12,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:02:12,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:02:12,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:02:12,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:02:12,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:02:12,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:02:12,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:02:12,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:02:12,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:02:12,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:02:12,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (1/1) ... [2021-10-24 11:02:12,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:02:12,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:02:12,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:02:12,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:02:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 11:02:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 11:02:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 11:02:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:02:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 11:02:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 11:02:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 11:02:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 11:02:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 11:02:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:02:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:02:13,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:02:13,470 INFO L299 CfgBuilder]: Removed 46 assume(true) statements. [2021-10-24 11:02:13,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:02:13 BoogieIcfgContainer [2021-10-24 11:02:13,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:02:13,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:02:13,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:02:13,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:02:13,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:02:11" (1/3) ... [2021-10-24 11:02:13,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55843b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:02:13, skipping insertion in model container [2021-10-24 11:02:13,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:12" (2/3) ... [2021-10-24 11:02:13,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55843b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:02:13, skipping insertion in model container [2021-10-24 11:02:13,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:02:13" (3/3) ... [2021-10-24 11:02:13,481 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0134.i [2021-10-24 11:02:13,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:02:13,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-10-24 11:02:13,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:02:13,538 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 [2021-10-24 11:02:13,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-10-24 11:02:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 162 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 11:02:13,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:13,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 11:02:13,573 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:02:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:13,578 INFO L82 PathProgramCache]: Analyzing trace with hash 28694792, now seen corresponding path program 1 times [2021-10-24 11:02:13,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:13,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253384226] [2021-10-24 11:02:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:13,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:13,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:13,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:13,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 11:02:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:13,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 11:02:13,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:13,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:13,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:13,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253384226] [2021-10-24 11:02:13,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253384226] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:13,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:13,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 11:02:13,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057538675] [2021-10-24 11:02:13,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 11:02:13,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:13,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 11:02:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:02:13,805 INFO L87 Difference]: Start difference. First operand has 163 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 162 states have internal predecessors, (174), 0 states have call successors, (0), 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) [2021-10-24 11:02:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:13,828 INFO L93 Difference]: Finished difference Result 163 states and 169 transitions. [2021-10-24 11:02:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 11:02:13,830 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 [2021-10-24 11:02:13,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:13,841 INFO L225 Difference]: With dead ends: 163 [2021-10-24 11:02:13,842 INFO L226 Difference]: Without dead ends: 161 [2021-10-24 11:02:13,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:02:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-24 11:02:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-10-24 11:02:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 85 states have (on average 1.964705882352941) internal successors, (167), 160 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2021-10-24 11:02:13,893 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 5 [2021-10-24 11:02:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:13,894 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2021-10-24 11:02:13,894 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) [2021-10-24 11:02:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2021-10-24 11:02:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 11:02:13,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:13,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 11:02:13,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:14,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:14,113 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:02:14,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:14,114 INFO L82 PathProgramCache]: Analyzing trace with hash 28694854, now seen corresponding path program 1 times [2021-10-24 11:02:14,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:14,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401654278] [2021-10-24 11:02:14,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:14,115 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:14,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:14,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:14,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 11:02:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:14,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:02:14,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:14,274 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 [2021-10-24 11:02:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:14,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:14,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:14,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401654278] [2021-10-24 11:02:14,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401654278] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:14,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:14,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 11:02:14,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678894056] [2021-10-24 11:02:14,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:02:14,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:14,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:02:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:02:14,323 INFO L87 Difference]: Start difference. First operand 161 states and 167 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) [2021-10-24 11:02:14,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:14,681 INFO L93 Difference]: Finished difference Result 183 states and 189 transitions. [2021-10-24 11:02:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:02:14,682 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 [2021-10-24 11:02:14,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:14,684 INFO L225 Difference]: With dead ends: 183 [2021-10-24 11:02:14,684 INFO L226 Difference]: Without dead ends: 183 [2021-10-24 11:02:14,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:02:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-24 11:02:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 160. [2021-10-24 11:02:14,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 85 states have (on average 1.9529411764705882) internal successors, (166), 159 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 166 transitions. [2021-10-24 11:02:14,701 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 166 transitions. Word has length 5 [2021-10-24 11:02:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:14,702 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 166 transitions. [2021-10-24 11:02:14,702 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) [2021-10-24 11:02:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 166 transitions. [2021-10-24 11:02:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 11:02:14,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:14,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 11:02:14,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:14,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:14,916 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:02:14,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:14,917 INFO L82 PathProgramCache]: Analyzing trace with hash 28694855, now seen corresponding path program 1 times [2021-10-24 11:02:14,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:14,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791673012] [2021-10-24 11:02:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:14,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:14,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:14,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:14,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 11:02:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:15,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 11:02:15,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:15,041 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 [2021-10-24 11:02:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:15,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:15,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:15,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791673012] [2021-10-24 11:02:15,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791673012] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:15,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:15,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 11:02:15,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598535345] [2021-10-24 11:02:15,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:02:15,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:02:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:02:15,177 INFO L87 Difference]: Start difference. First operand 160 states and 166 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) [2021-10-24 11:02:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:15,913 INFO L93 Difference]: Finished difference Result 182 states and 188 transitions. [2021-10-24 11:02:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:02:15,914 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 [2021-10-24 11:02:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:15,915 INFO L225 Difference]: With dead ends: 182 [2021-10-24 11:02:15,916 INFO L226 Difference]: Without dead ends: 182 [2021-10-24 11:02:15,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:02:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-24 11:02:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 159. [2021-10-24 11:02:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 85 states have (on average 1.9411764705882353) internal successors, (165), 158 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2021-10-24 11:02:15,940 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 5 [2021-10-24 11:02:15,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:15,941 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2021-10-24 11:02:15,941 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) [2021-10-24 11:02:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2021-10-24 11:02:15,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 11:02:15,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:15,942 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:02:15,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:16,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:16,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:02:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:16,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1805950471, now seen corresponding path program 1 times [2021-10-24 11:02:16,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:16,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429229078] [2021-10-24 11:02:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:16,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:16,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:16,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:16,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 11:02:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:16,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 11:02:16,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:16,341 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-24 11:02:16,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-24 11:02:16,627 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 11:02:16,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-24 11:02:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:16,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:18,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:18,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429229078] [2021-10-24 11:02:18,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429229078] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:18,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:18,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 11:02:18,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695146504] [2021-10-24 11:02:18,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 11:02:18,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 11:02:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-10-24 11:02:18,961 INFO L87 Difference]: Start difference. First operand 159 states and 165 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:19,680 INFO L93 Difference]: Finished difference Result 180 states and 186 transitions. [2021-10-24 11:02:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 11:02:19,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-24 11:02:19,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:19,683 INFO L225 Difference]: With dead ends: 180 [2021-10-24 11:02:19,683 INFO L226 Difference]: Without dead ends: 180 [2021-10-24 11:02:19,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2180.9ms TimeCoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2021-10-24 11:02:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-24 11:02:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 158. [2021-10-24 11:02:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 87 states have (on average 1.896551724137931) internal successors, (165), 157 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 165 transitions. [2021-10-24 11:02:19,696 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 165 transitions. Word has length 7 [2021-10-24 11:02:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:19,697 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 165 transitions. [2021-10-24 11:02:19,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 165 transitions. [2021-10-24 11:02:19,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 11:02:19,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:19,698 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:02:19,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:19,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:19,924 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:02:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:19,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1805950472, now seen corresponding path program 1 times [2021-10-24 11:02:19,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:19,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057252236] [2021-10-24 11:02:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:19,926 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:19,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:19,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 11:02:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:20,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 11:02:20,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:20,168 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-24 11:02:20,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 42 [2021-10-24 11:02:20,257 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-24 11:02:20,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 63 [2021-10-24 11:02:20,611 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-24 11:02:20,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 44 treesize of output 51 [2021-10-24 11:02:20,664 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-24 11:02:20,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 64 [2021-10-24 11:02:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:21,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:24,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:24,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:24,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057252236] [2021-10-24 11:02:24,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057252236] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:24,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:24,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-24 11:02:24,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163911738] [2021-10-24 11:02:24,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:02:24,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:24,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:02:24,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-24 11:02:24,126 INFO L87 Difference]: Start difference. First operand 158 states and 165 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:30,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:30,702 INFO L93 Difference]: Finished difference Result 194 states and 200 transitions. [2021-10-24 11:02:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 11:02:30,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-24 11:02:30,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:30,705 INFO L225 Difference]: With dead ends: 194 [2021-10-24 11:02:30,706 INFO L226 Difference]: Without dead ends: 194 [2021-10-24 11:02:30,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 7036.8ms TimeCoverageRelationStatistics Valid=76, Invalid=133, Unknown=1, NotChecked=0, Total=210 [2021-10-24 11:02:30,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-24 11:02:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 154. [2021-10-24 11:02:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 87 states have (on average 1.839080459770115) internal successors, (160), 153 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 160 transitions. [2021-10-24 11:02:30,722 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 160 transitions. Word has length 7 [2021-10-24 11:02:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:30,722 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 160 transitions. [2021-10-24 11:02:30,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 160 transitions. [2021-10-24 11:02:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 11:02:30,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:30,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:02:30,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:30,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:30,938 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:02:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:30,939 INFO L82 PathProgramCache]: Analyzing trace with hash 351614728, now seen corresponding path program 1 times [2021-10-24 11:02:30,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:30,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241511399] [2021-10-24 11:02:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:30,940 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:30,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:30,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:30,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 11:02:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:31,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 11:02:31,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:31,247 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-24 11:02:31,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-24 11:02:31,597 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 11:02:31,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-10-24 11:02:31,731 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-24 11:02:31,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 15 [2021-10-24 11:02:31,795 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 15 [2021-10-24 11:02:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:31,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:31,916 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-24 11:02:31,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-24 11:02:31,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:02:31,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-24 11:02:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:41,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:41,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241511399] [2021-10-24 11:02:41,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241511399] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:41,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:41,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-10-24 11:02:41,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013347762] [2021-10-24 11:02:41,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 11:02:41,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 11:02:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=64, Unknown=4, NotChecked=0, Total=90 [2021-10-24 11:02:41,134 INFO L87 Difference]: Start difference. First operand 154 states and 160 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:44,866 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2021-10-24 11:02:44,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 11:02:44,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 9 [2021-10-24 11:02:44,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:44,868 INFO L225 Difference]: With dead ends: 188 [2021-10-24 11:02:44,868 INFO L226 Difference]: Without dead ends: 188 [2021-10-24 11:02:44,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 11338.6ms TimeCoverageRelationStatistics Valid=67, Invalid=138, Unknown=5, NotChecked=0, Total=210 [2021-10-24 11:02:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-24 11:02:44,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 161. [2021-10-24 11:02:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 94 states have (on average 1.7872340425531914) internal successors, (168), 160 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 168 transitions. [2021-10-24 11:02:44,876 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 168 transitions. Word has length 9 [2021-10-24 11:02:44,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:44,877 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 168 transitions. [2021-10-24 11:02:44,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 168 transitions. [2021-10-24 11:02:44,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 11:02:44,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:44,878 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:02:44,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:45,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:45,093 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:02:45,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:45,094 INFO L82 PathProgramCache]: Analyzing trace with hash 351614729, now seen corresponding path program 1 times [2021-10-24 11:02:45,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:45,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182472029] [2021-10-24 11:02:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:45,095 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:45,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:45,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:45,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 11:02:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:45,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-24 11:02:45,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:45,498 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-24 11:02:45,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 49 [2021-10-24 11:02:45,586 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-24 11:02:45,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 63 [2021-10-24 11:02:45,996 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-24 11:02:45,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 55 [2021-10-24 11:02:46,061 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-24 11:02:46,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 52 treesize of output 68 [2021-10-24 11:02:47,019 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-24 11:02:47,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 71 [2021-10-24 11:02:47,107 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-24 11:02:47,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 23 [2021-10-24 11:02:47,293 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 34 treesize of output 26 [2021-10-24 11:02:47,298 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 20 treesize of output 12 [2021-10-24 11:02:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:47,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:47,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:02:47,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-10-24 11:02:47,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:02:47,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 288 [2021-10-24 11:03:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:07,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:07,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182472029] [2021-10-24 11:03:07,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182472029] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:07,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:03:07,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-24 11:03:07,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340955753] [2021-10-24 11:03:07,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-24 11:03:07,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:07,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-24 11:03:07,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=145, Unknown=2, NotChecked=0, Total=182 [2021-10-24 11:03:07,550 INFO L87 Difference]: Start difference. First operand 161 states and 168 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:10,704 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_list_add_~head.base) c_ULTIMATE.start_list_add_~head.offset))) (let ((.cse5 (bvadd (_ bv8 32) .cse4))) (and (= (select |c_#length| c_ULTIMATE.start___list_add_~next.base) (_ bv8 32)) (forall ((v_ULTIMATE.start_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_14))) (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32))) (.cse2 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| v_ULTIMATE.start_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_11) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32)))))))) (= (select |c_#length| |c_ULTIMATE.start_list_add_#t~mem6.base|) (_ bv8 32)) (bvule (bvadd (_ bv4 32) .cse4) .cse5) (= |c_ULTIMATE.start_list_add_#t~mem6.offset| (_ bv0 32)) (bvule .cse5 (select |c_#length| (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_list_add_~head.base) c_ULTIMATE.start_list_add_~head.offset))) (exists ((ULTIMATE.start_gl_insert_~node~0.base (_ BitVec 32))) (= (select |c_#length| ULTIMATE.start_gl_insert_~node~0.base) (_ bv12 32))) (= c_ULTIMATE.start___list_add_~next.offset (_ bv0 32)) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse6 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32))) (.cse7 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32))) (.cse8 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_gl_insert_~node~0.base) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) .cse6 v_DerPreprocessor_10) .cse7 v_DerPreprocessor_11) .cse8 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_gl_insert_~node~0.base) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_5) .cse6 v_DerPreprocessor_6) .cse7 v_DerPreprocessor_7) .cse8 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse9 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_gl_insert_~node~0.base) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_11) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse9) (bvadd (_ bv8 32) .cse9))))))) is different from false [2021-10-24 11:03:40,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:40,938 INFO L93 Difference]: Finished difference Result 256 states and 268 transitions. [2021-10-24 11:03:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 11:03:40,940 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 11:03:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:40,942 INFO L225 Difference]: With dead ends: 256 [2021-10-24 11:03:40,942 INFO L226 Difference]: Without dead ends: 256 [2021-10-24 11:03:40,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 22745.9ms TimeCoverageRelationStatistics Valid=97, Invalid=246, Unknown=3, NotChecked=34, Total=380 [2021-10-24 11:03:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-24 11:03:40,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 161. [2021-10-24 11:03:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 94 states have (on average 1.7765957446808511) internal successors, (167), 160 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2021-10-24 11:03:40,949 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 9 [2021-10-24 11:03:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:40,950 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2021-10-24 11:03:40,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:40,951 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2021-10-24 11:03:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 11:03:40,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:40,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:40,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-24 11:03:41,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:41,160 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:03:41,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:41,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1984845326, now seen corresponding path program 1 times [2021-10-24 11:03:41,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:41,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149678025] [2021-10-24 11:03:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:41,161 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:41,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:41,164 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:41,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 11:03:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:41,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 11:03:41,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:41,329 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 [2021-10-24 11:03:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:41,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:41,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:41,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149678025] [2021-10-24 11:03:41,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149678025] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:41,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:03:41,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 11:03:41,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140081202] [2021-10-24 11:03:41,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:03:41,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:41,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:03:41,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:03:41,467 INFO L87 Difference]: Start difference. First operand 161 states and 167 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:42,286 INFO L93 Difference]: Finished difference Result 220 states and 230 transitions. [2021-10-24 11:03:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 11:03:42,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 11:03:42,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:42,289 INFO L225 Difference]: With dead ends: 220 [2021-10-24 11:03:42,289 INFO L226 Difference]: Without dead ends: 220 [2021-10-24 11:03:42,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 85.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 11:03:42,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-24 11:03:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 157. [2021-10-24 11:03:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7340425531914894) internal successors, (163), 156 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 163 transitions. [2021-10-24 11:03:42,296 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 163 transitions. Word has length 10 [2021-10-24 11:03:42,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:42,296 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 163 transitions. [2021-10-24 11:03:42,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:42,297 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 163 transitions. [2021-10-24 11:03:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 11:03:42,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:42,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:42,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:42,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:42,509 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:03:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:42,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1984845325, now seen corresponding path program 1 times [2021-10-24 11:03:42,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:42,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070974835] [2021-10-24 11:03:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:42,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:42,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:42,513 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:42,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 11:03:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:42,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 11:03:42,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:42,655 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 [2021-10-24 11:03:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:42,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:43,125 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:43,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070974835] [2021-10-24 11:03:43,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070974835] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:43,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:03:43,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 11:03:43,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544858678] [2021-10-24 11:03:43,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:03:43,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:43,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:03:43,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 11:03:43,127 INFO L87 Difference]: Start difference. First operand 157 states and 163 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:46,045 INFO L93 Difference]: Finished difference Result 220 states and 230 transitions. [2021-10-24 11:03:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 11:03:46,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 11:03:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:46,049 INFO L225 Difference]: With dead ends: 220 [2021-10-24 11:03:46,049 INFO L226 Difference]: Without dead ends: 220 [2021-10-24 11:03:46,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 524.5ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-24 11:03:46,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-24 11:03:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 155. [2021-10-24 11:03:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 154 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 161 transitions. [2021-10-24 11:03:46,055 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 161 transitions. Word has length 10 [2021-10-24 11:03:46,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:46,056 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 161 transitions. [2021-10-24 11:03:46,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:46,056 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 161 transitions. [2021-10-24 11:03:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 11:03:46,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:46,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:46,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:46,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:46,270 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:03:46,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:46,270 INFO L82 PathProgramCache]: Analyzing trace with hash -470878954, now seen corresponding path program 1 times [2021-10-24 11:03:46,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:46,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917677013] [2021-10-24 11:03:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:46,271 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:46,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:46,275 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:46,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 11:03:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:46,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 11:03:46,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:46,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:46,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-24 11:03:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:46,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:46,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917677013] [2021-10-24 11:03:46,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917677013] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:46,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:03:46,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-24 11:03:46,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615247008] [2021-10-24 11:03:46,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 11:03:46,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 11:03:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-24 11:03:46,971 INFO L87 Difference]: Start difference. First operand 155 states and 161 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:48,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:48,347 INFO L93 Difference]: Finished difference Result 225 states and 235 transitions. [2021-10-24 11:03:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 11:03:48,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 12 [2021-10-24 11:03:48,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:48,350 INFO L225 Difference]: With dead ends: 225 [2021-10-24 11:03:48,350 INFO L226 Difference]: Without dead ends: 225 [2021-10-24 11:03:48,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 552.0ms TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-10-24 11:03:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-24 11:03:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 152. [2021-10-24 11:03:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 94 states have (on average 1.6808510638297873) internal successors, (158), 151 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2021-10-24 11:03:48,357 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 12 [2021-10-24 11:03:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:48,357 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 158 transitions. [2021-10-24 11:03:48,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 158 transitions. [2021-10-24 11:03:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 11:03:48,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:48,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:48,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:48,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:48,563 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:03:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:48,564 INFO L82 PathProgramCache]: Analyzing trace with hash -470878955, now seen corresponding path program 1 times [2021-10-24 11:03:48,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:48,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242649622] [2021-10-24 11:03:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:48,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:48,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:48,565 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:48,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-24 11:03:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:48,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:03:48,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:48,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:48,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:48,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242649622] [2021-10-24 11:03:48,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242649622] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:48,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:03:48,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:03:48,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350605304] [2021-10-24 11:03:48,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:03:48,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:48,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:03:48,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:03:48,865 INFO L87 Difference]: Start difference. First operand 152 states and 158 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:49,377 INFO L93 Difference]: Finished difference Result 165 states and 171 transitions. [2021-10-24 11:03:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 11:03:49,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-24 11:03:49,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:49,379 INFO L225 Difference]: With dead ends: 165 [2021-10-24 11:03:49,379 INFO L226 Difference]: Without dead ends: 165 [2021-10-24 11:03:49,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:03:49,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-24 11:03:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 149. [2021-10-24 11:03:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 94 states have (on average 1.648936170212766) internal successors, (155), 148 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2021-10-24 11:03:49,384 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 12 [2021-10-24 11:03:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:49,385 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2021-10-24 11:03:49,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2021-10-24 11:03:49,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 11:03:49,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:49,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:49,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:49,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:49,605 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:03:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1741445100, now seen corresponding path program 1 times [2021-10-24 11:03:49,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:49,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438109070] [2021-10-24 11:03:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:49,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:49,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:49,607 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:49,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-24 11:03:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:49,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 11:03:49,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:49,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:50,009 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-24 11:03:50,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2021-10-24 11:03:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:50,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:50,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438109070] [2021-10-24 11:03:50,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438109070] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:50,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:03:50,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 11:03:50,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214978551] [2021-10-24 11:03:50,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:03:50,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:03:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:03:50,034 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:50,737 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2021-10-24 11:03:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 11:03:50,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-24 11:03:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:50,740 INFO L225 Difference]: With dead ends: 227 [2021-10-24 11:03:50,740 INFO L226 Difference]: Without dead ends: 227 [2021-10-24 11:03:50,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 89.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 11:03:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-24 11:03:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 147. [2021-10-24 11:03:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.627659574468085) internal successors, (153), 146 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 153 transitions. [2021-10-24 11:03:50,747 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 153 transitions. Word has length 17 [2021-10-24 11:03:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:50,747 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 153 transitions. [2021-10-24 11:03:50,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 153 transitions. [2021-10-24 11:03:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 11:03:50,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:50,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:50,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:50,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:50,952 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:03:50,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:50,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1741445099, now seen corresponding path program 1 times [2021-10-24 11:03:50,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:50,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924766721] [2021-10-24 11:03:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:50,953 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:50,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:50,954 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:50,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-24 11:03:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:51,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 11:03:51,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:51,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:51,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:03:51,732 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 22 treesize of output 26 [2021-10-24 11:03:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:52,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:52,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924766721] [2021-10-24 11:03:52,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924766721] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:52,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:03:52,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-24 11:03:52,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781002546] [2021-10-24 11:03:52,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 11:03:52,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 11:03:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-24 11:03:52,046 INFO L87 Difference]: Start difference. First operand 147 states and 153 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:53,039 INFO L93 Difference]: Finished difference Result 208 states and 218 transitions. [2021-10-24 11:03:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 11:03:53,040 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-24 11:03:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:53,042 INFO L225 Difference]: With dead ends: 208 [2021-10-24 11:03:53,042 INFO L226 Difference]: Without dead ends: 208 [2021-10-24 11:03:53,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 376.2ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-24 11:03:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-24 11:03:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 145. [2021-10-24 11:03:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 94 states have (on average 1.6063829787234043) internal successors, (151), 144 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 151 transitions. [2021-10-24 11:03:53,048 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 151 transitions. Word has length 17 [2021-10-24 11:03:53,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:53,048 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 151 transitions. [2021-10-24 11:03:53,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 151 transitions. [2021-10-24 11:03:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 11:03:53,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:53,050 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:53,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-24 11:03:53,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:53,251 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-24 11:03:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:53,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1992274679, now seen corresponding path program 1 times [2021-10-24 11:03:53,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:53,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801431498] [2021-10-24 11:03:53,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:53,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:53,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:53,254 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:53,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-24 11:03:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:53,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-24 11:03:53,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:53,613 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 [2021-10-24 11:03:53,925 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 [2021-10-24 11:03:54,074 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-10-24 11:03:54,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 57 [2021-10-24 11:03:54,311 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-24 11:03:54,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 35 [2021-10-24 11:03:54,569 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 60 treesize of output 48 [2021-10-24 11:03:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:54,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:55,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:03:55,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-24 11:03:59,542 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_gl_insert_~node~0.base_19 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_19)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_19 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_19 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_19) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))) (_ bv1 1))))) is different from false [2021-10-24 11:03:59,734 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 318385 treesize of output 317361 [2021-10-24 11:04:01,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:04:01,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801431498] [2021-10-24 11:04:01,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 11:04:01,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380381891] [2021-10-24 11:04:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:04:01,032 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:04:01,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:04:01,048 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:04:01,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-24 11:04:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:04:01,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-24 11:04:01,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:04:01,566 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 7 treesize of output 3 [2021-10-24 11:04:01,647 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 [2021-10-24 11:04:02,138 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 [2021-10-24 11:04:02,349 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-10-24 11:04:02,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 26 treesize of output 37 [2021-10-24 11:04:02,755 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-24 11:04:02,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 38 [2021-10-24 11:04:03,148 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 46 treesize of output 34 [2021-10-24 11:04:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:04:03,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:04:03,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:04:03,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-24 11:04:07,102 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 624368 treesize of output 622320 [2021-10-24 11:04:09,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 11:04:09,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969289918] [2021-10-24 11:04:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:04:09,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:04:09,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:04:09,229 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:04:09,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-24 11:04:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:04:09,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-24 11:04:09,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:04:09,833 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 [2021-10-24 11:04:09,943 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-10-24 11:04:09,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2021-10-24 11:04:10,111 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-24 11:04:10,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 35 [2021-10-24 11:04:10,214 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 60 treesize of output 48 [2021-10-24 11:04:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:04:10,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:04:10,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:04:10,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-24 11:04:14,894 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_gl_insert_~node~0.base_21 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_21))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_21 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_21 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_21) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))) (_ bv1 1))))) is different from false [2021-10-24 11:04:15,060 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 2612724 treesize of output 2604532 [2021-10-24 11:04:23,272 WARN L207 SmtUtils]: Spent 8.21 s on a formula simplification that was a NOOP. DAG size: 2340 [2021-10-24 11:04:23,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 11:04:23,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:04:23,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-24 11:04:23,307 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-24 11:04:23,307 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-24 11:04:23,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 11:04:23,317 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 11:04:23,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 11:04:23,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 11:04:23,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 11:04:23,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 11:04:23,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-24 11:04:23,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-24 11:04:23,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-24 11:04:23,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-24 11:04:23,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-24 11:04:23,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-24 11:04:23,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-24 11:04:23,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-24 11:04:23,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-24 11:04:23,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-24 11:04:23,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-24 11:04:23,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-24 11:04:23,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-24 11:04:23,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-24 11:04:23,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-24 11:04:23,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-24 11:04:23,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-24 11:04:23,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-24 11:04:23,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-24 11:04:23,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-24 11:04:23,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-24 11:04:23,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-24 11:04:23,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-24 11:04:23,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-24 11:04:23,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-24 11:04:23,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-24 11:04:23,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-24 11:04:23,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-24 11:04:23,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-24 11:04:23,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-24 11:04:23,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-24 11:04:23,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-24 11:04:23,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-24 11:04:23,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-24 11:04:23,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-24 11:04:23,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-24 11:04:23,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-24 11:04:23,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-24 11:04:23,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION [2021-10-24 11:04:23,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-24 11:04:23,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION [2021-10-24 11:04:23,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-24 11:04:23,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-24 11:04:23,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-24 11:04:23,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION [2021-10-24 11:04:23,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION [2021-10-24 11:04:23,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION [2021-10-24 11:04:23,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION [2021-10-24 11:04:23,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION [2021-10-24 11:04:23,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION [2021-10-24 11:04:23,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION [2021-10-24 11:04:23,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION [2021-10-24 11:04:23,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION [2021-10-24 11:04:23,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION [2021-10-24 11:04:23,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION [2021-10-24 11:04:23,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION [2021-10-24 11:04:23,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION [2021-10-24 11:04:23,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63REQUIRES_VIOLATION [2021-10-24 11:04:23,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATION [2021-10-24 11:04:23,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATION [2021-10-24 11:04:23,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION [2021-10-24 11:04:23,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATION [2021-10-24 11:04:23,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68REQUIRES_VIOLATION [2021-10-24 11:04:23,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69REQUIRES_VIOLATION [2021-10-24 11:04:23,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70REQUIRES_VIOLATION [2021-10-24 11:04:23,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71REQUIRES_VIOLATION [2021-10-24 11:04:23,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 11:04:23,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 11:04:23,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 11:04:23,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 11:04:23,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-24 11:04:23,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-24 11:04:23,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-24 11:04:23,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:04:23,966 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:04:23,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:04:23 BoogieIcfgContainer [2021-10-24 11:04:23,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:04:23,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:04:23,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:04:23,989 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:04:23,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:02:13" (3/4) ... [2021-10-24 11:04:23,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 11:04:23,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:04:23,995 INFO L168 Benchmark]: Toolchain (without parser) took 132755.99 ms. Allocated memory was 58.7 MB in the beginning and 436.2 MB in the end (delta: 377.5 MB). Free memory was 35.4 MB in the beginning and 394.8 MB in the end (delta: -359.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 11:04:23,996 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 39.8 MB in the end (delta: 44.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:04:23,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 851.51 ms. Allocated memory is still 58.7 MB. Free memory was 35.2 MB in the beginning and 27.6 MB in the end (delta: 7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:04:23,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.76 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.6 MB in the beginning and 53.0 MB in the end (delta: -25.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:04:24,000 INFO L168 Benchmark]: Boogie Preprocessor took 42.91 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 50.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:04:24,000 INFO L168 Benchmark]: RCFGBuilder took 1256.44 ms. Allocated memory is still 71.3 MB. Free memory was 50.4 MB in the beginning and 38.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:04:24,001 INFO L168 Benchmark]: TraceAbstraction took 130513.76 ms. Allocated memory was 71.3 MB in the beginning and 436.2 MB in the end (delta: 364.9 MB). Free memory was 37.9 MB in the beginning and 395.9 MB in the end (delta: -358.0 MB). Peak memory consumption was 257.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:04:24,001 INFO L168 Benchmark]: Witness Printer took 5.53 ms. Allocated memory is still 436.2 MB. Free memory is still 394.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:04:24,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 39.8 MB in the end (delta: 44.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 851.51 ms. Allocated memory is still 58.7 MB. Free memory was 35.2 MB in the beginning and 27.6 MB in the end (delta: 7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.76 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.6 MB in the beginning and 53.0 MB in the end (delta: -25.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.91 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 50.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1256.44 ms. Allocated memory is still 71.3 MB. Free memory was 50.4 MB in the beginning and 38.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 130513.76 ms. Allocated memory was 71.3 MB in the beginning and 436.2 MB in the end (delta: 364.9 MB). Free memory was 37.9 MB in the beginning and 395.9 MB in the end (delta: -358.0 MB). Peak memory consumption was 257.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.53 ms. Allocated memory is still 436.2 MB. Free memory is still 394.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L564] struct list_head gl_list = { &(gl_list), &(gl_list) }; [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L547] head->next [L535] next->prev = new [L536] new->next = next [L537] new->prev = prev [L538] prev->next = new [L578] COND TRUE __VERIFIER_nondet_int() [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L547] head->next [L535] next->prev = new - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 163 locations, 76 error locations. Started 1 CEGAR loops. OverallTime: 130430.1ms, OverallIterations: 14, TraceHistogramMax: 2, EmptinessCheckTime: 27.8ms, AutomataDifference: 52943.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1186 SDtfs, 5855 SDslu, 2206 SDs, 0 SdLazy, 3461 SolverSat, 209 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37934.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 158 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 45003.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=0, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 149.6ms AutomataMinimizationTime, 13 MinimizatonAttempts, 590 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 105.9ms SsaConstructionTime, 601.3ms SatisfiabilityAnalysisTime, 41890.4ms InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 224 ConstructedInterpolants, 24 QuantifiedInterpolants, 2688 SizeOfPredicates, 80 NumberOfNonLiveVariables, 901 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 11:04:24,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24806f1e-f6cc-4f22-b899-7442e688a537/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...