./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 713ae5dee39d08db1e818ebc31454a222c136fde7aad4a26405d3060cfa0eeea --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:48:07,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:48:07,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:48:07,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:48:07,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:48:07,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:48:07,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:48:07,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:48:07,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:48:07,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:48:07,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:48:07,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:48:07,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:48:07,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:48:07,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:48:07,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:48:07,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:48:07,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:48:07,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:48:07,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:48:07,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:48:07,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:48:07,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:48:07,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:48:07,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:48:07,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:48:07,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:48:07,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:48:07,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:48:07,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:48:07,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:48:07,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:48:07,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:48:07,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:48:07,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:48:07,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:48:07,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:48:07,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:48:07,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:48:07,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:48:07,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:48:07,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 03:48:07,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:48:07,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:48:07,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:48:07,741 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:48:07,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:48:07,747 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:48:07,747 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:48:07,747 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:48:07,747 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:48:07,748 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:48:07,749 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:48:07,749 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:48:07,749 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:48:07,749 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:48:07,750 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:48:07,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:48:07,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:48:07,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:48:07,751 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:48:07,752 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:48:07,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:48:07,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:48:07,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:48:07,752 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 03:48:07,753 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 03:48:07,753 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 03:48:07,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:48:07,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:48:07,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:48:07,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:48:07,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:48:07,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:48:07,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:48:07,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:48:07,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:48:07,758 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:48:07,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:48:07,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:48:07,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:48:07,759 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_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 713ae5dee39d08db1e818ebc31454a222c136fde7aad4a26405d3060cfa0eeea [2021-11-03 03:48:08,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:48:08,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:48:08,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:48:08,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:48:08,059 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:48:08,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i [2021-11-03 03:48:08,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data/e0cb343d3/19c0a1e06b034a1995efb8a717a74742/FLAG8cd79e7d2 [2021-11-03 03:48:08,772 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:48:08,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i [2021-11-03 03:48:08,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data/e0cb343d3/19c0a1e06b034a1995efb8a717a74742/FLAG8cd79e7d2 [2021-11-03 03:48:08,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data/e0cb343d3/19c0a1e06b034a1995efb8a717a74742 [2021-11-03 03:48:08,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:48:08,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:48:08,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:48:08,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:48:08,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:48:08,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:08" (1/1) ... [2021-11-03 03:48:08,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e143f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:08, skipping insertion in model container [2021-11-03 03:48:08,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:08" (1/1) ... [2021-11-03 03:48:08,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:48:09,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:48:09,492 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[33021,33034] [2021-11-03 03:48:09,667 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[49681,49694] [2021-11-03 03:48:09,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:48:09,709 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:48:09,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5320af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:09, skipping insertion in model container [2021-11-03 03:48:09,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:48:09,710 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:48:09,715 INFO L168 Benchmark]: Toolchain (without parser) took 732.86 ms. Allocated memory is still 130.0 MB. Free memory was 99.5 MB in the beginning and 91.3 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:48:09,716 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:48:09,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.24 ms. Allocated memory is still 130.0 MB. Free memory was 99.1 MB in the beginning and 91.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:48:09,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 730.24 ms. Allocated memory is still 130.0 MB. Free memory was 99.1 MB in the beginning and 91.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 713ae5dee39d08db1e818ebc31454a222c136fde7aad4a26405d3060cfa0eeea --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:48:11,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:48:11,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:48:12,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:48:12,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:48:12,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:48:12,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:48:12,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:48:12,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:48:12,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:48:12,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:48:12,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:48:12,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:48:12,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:48:12,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:48:12,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:48:12,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:48:12,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:48:12,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:48:12,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:48:12,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:48:12,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:48:12,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:48:12,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:48:12,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:48:12,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:48:12,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:48:12,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:48:12,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:48:12,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:48:12,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:48:12,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:48:12,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:48:12,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:48:12,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:48:12,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:48:12,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:48:12,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:48:12,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:48:12,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:48:12,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:48:12,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 03:48:12,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:48:12,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:48:12,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:48:12,194 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:48:12,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:48:12,195 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:48:12,195 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:48:12,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:48:12,195 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:48:12,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:48:12,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:48:12,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:48:12,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:48:12,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:48:12,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:48:12,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:48:12,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:48:12,200 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 03:48:12,200 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 03:48:12,200 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 03:48:12,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:48:12,201 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:48:12,201 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:48:12,201 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:48:12,201 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:48:12,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:48:12,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:48:12,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:48:12,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:48:12,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:48:12,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:48:12,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:48:12,204 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:48:12,204 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:48:12,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:48:12,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:48:12,205 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_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 713ae5dee39d08db1e818ebc31454a222c136fde7aad4a26405d3060cfa0eeea [2021-11-03 03:48:12,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:48:12,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:48:12,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:48:12,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:48:12,624 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:48:12,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i [2021-11-03 03:48:12,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data/d9dab2c00/64f954f1bb7f496aa159cdb91025bad8/FLAGb076cba75 [2021-11-03 03:48:13,403 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:48:13,404 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i [2021-11-03 03:48:13,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data/d9dab2c00/64f954f1bb7f496aa159cdb91025bad8/FLAGb076cba75 [2021-11-03 03:48:13,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/data/d9dab2c00/64f954f1bb7f496aa159cdb91025bad8 [2021-11-03 03:48:13,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:48:13,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:48:13,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:48:13,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:48:13,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:48:13,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:13" (1/1) ... [2021-11-03 03:48:13,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ec43b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:13, skipping insertion in model container [2021-11-03 03:48:13,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:13" (1/1) ... [2021-11-03 03:48:13,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:48:13,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:48:14,141 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[33021,33034] [2021-11-03 03:48:14,389 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[49681,49694] [2021-11-03 03:48:14,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:48:14,453 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:48:14,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:48:14,492 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[33021,33034] [2021-11-03 03:48:14,591 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[49681,49694] [2021-11-03 03:48:14,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:48:14,624 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:48:14,679 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[33021,33034] [2021-11-03 03:48:14,799 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[49681,49694] [2021-11-03 03:48:14,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:48:14,875 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:48:14,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14 WrapperNode [2021-11-03 03:48:14,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:48:14,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:48:14,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:48:14,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:48:14,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:14,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:15,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:48:15,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:48:15,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:48:15,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:48:15,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:15,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:15,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:15,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:15,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:15,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:15,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:15,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:48:15,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:48:15,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:48:15,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:48:15,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (1/1) ... [2021-11-03 03:48:15,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:48:15,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:48:15,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:48:15,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:48:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:48:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:48:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:48:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:48:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:48:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 03:48:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:48:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:48:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:48:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:48:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:48:15,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:48:23,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:48:23,258 INFO L299 CfgBuilder]: Removed 128 assume(true) statements. [2021-11-03 03:48:23,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:23 BoogieIcfgContainer [2021-11-03 03:48:23,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:48:23,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:48:23,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:48:23,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:48:23,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:48:13" (1/3) ... [2021-11-03 03:48:23,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a58c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:23, skipping insertion in model container [2021-11-03 03:48:23,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:14" (2/3) ... [2021-11-03 03:48:23,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a58c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:23, skipping insertion in model container [2021-11-03 03:48:23,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:23" (3/3) ... [2021-11-03 03:48:23,279 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-3.i [2021-11-03 03:48:23,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:48:23,285 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 936 error locations. [2021-11-03 03:48:23,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:48:23,355 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:48:23,355 INFO L340 AbstractCegarLoop]: Starting to check reachability of 936 error locations. [2021-11-03 03:48:23,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 1850 states, 913 states have (on average 2.2573932092004383) internal successors, (2061), 1849 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 03:48:23,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:23,417 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 03:48:23,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:23,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-03 03:48:23,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:23,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475592537] [2021-11-03 03:48:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:23,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:23,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:23,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:23,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:48:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:23,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:48:23,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:23,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:23,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:23,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475592537] [2021-11-03 03:48:23,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475592537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:23,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:23,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:48:23,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248217920] [2021-11-03 03:48:23,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:48:23,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:48:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:48:23,729 INFO L87 Difference]: Start difference. First operand has 1850 states, 913 states have (on average 2.2573932092004383) internal successors, (2061), 1849 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:23,820 INFO L93 Difference]: Finished difference Result 1832 states and 1930 transitions. [2021-11-03 03:48:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:48:23,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 03:48:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:23,855 INFO L225 Difference]: With dead ends: 1832 [2021-11-03 03:48:23,855 INFO L226 Difference]: Without dead ends: 1830 [2021-11-03 03:48:23,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:48:23,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2021-11-03 03:48:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1830. [2021-11-03 03:48:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 904 states have (on average 2.1327433628318584) internal successors, (1928), 1829 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 1928 transitions. [2021-11-03 03:48:24,001 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 1928 transitions. Word has length 5 [2021-11-03 03:48:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:24,002 INFO L470 AbstractCegarLoop]: Abstraction has 1830 states and 1928 transitions. [2021-11-03 03:48:24,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:24,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 1928 transitions. [2021-11-03 03:48:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 03:48:24,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:24,003 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 03:48:24,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:24,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:24,215 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-03 03:48:24,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:24,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515408382] [2021-11-03 03:48:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:24,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:24,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:24,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:24,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:48:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:24,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:48:24,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:24,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:48:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:24,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:24,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:24,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515408382] [2021-11-03 03:48:24,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515408382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:24,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:24,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:48:24,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353865744] [2021-11-03 03:48:24,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:48:24,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:48:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:48:24,498 INFO L87 Difference]: Start difference. First operand 1830 states and 1928 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:27,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:27,827 INFO L93 Difference]: Finished difference Result 2096 states and 2232 transitions. [2021-11-03 03:48:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:48:27,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 03:48:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:27,839 INFO L225 Difference]: With dead ends: 2096 [2021-11-03 03:48:27,839 INFO L226 Difference]: Without dead ends: 2096 [2021-11-03 03:48:27,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:48:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2021-11-03 03:48:27,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 1815. [2021-11-03 03:48:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 980 states have (on average 2.012244897959184) internal successors, (1972), 1814 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 1972 transitions. [2021-11-03 03:48:27,885 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 1972 transitions. Word has length 5 [2021-11-03 03:48:27,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:27,886 INFO L470 AbstractCegarLoop]: Abstraction has 1815 states and 1972 transitions. [2021-11-03 03:48:27,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 1972 transitions. [2021-11-03 03:48:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 03:48:27,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:27,887 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 03:48:27,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:28,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:28,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:28,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:28,101 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-03 03:48:28,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:28,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961607119] [2021-11-03 03:48:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:28,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:28,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:28,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:28,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:48:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:28,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:48:28,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:28,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:48:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:28,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:28,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:28,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961607119] [2021-11-03 03:48:28,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961607119] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:28,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:28,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 03:48:28,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411654090] [2021-11-03 03:48:28,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:48:28,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:48:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:48:28,430 INFO L87 Difference]: Start difference. First operand 1815 states and 1972 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:37,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:37,334 INFO L93 Difference]: Finished difference Result 2399 states and 2602 transitions. [2021-11-03 03:48:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:48:37,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 03:48:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:37,349 INFO L225 Difference]: With dead ends: 2399 [2021-11-03 03:48:37,349 INFO L226 Difference]: Without dead ends: 2399 [2021-11-03 03:48:37,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:48:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-11-03 03:48:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 1971. [2021-11-03 03:48:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1146 states have (on average 1.987783595113438) internal successors, (2278), 1970 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2278 transitions. [2021-11-03 03:48:37,395 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2278 transitions. Word has length 5 [2021-11-03 03:48:37,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:37,396 INFO L470 AbstractCegarLoop]: Abstraction has 1971 states and 2278 transitions. [2021-11-03 03:48:37,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2278 transitions. [2021-11-03 03:48:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 03:48:37,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:37,397 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 03:48:37,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:37,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:37,610 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:37,611 INFO L85 PathProgramCache]: Analyzing trace with hash 891404513, now seen corresponding path program 1 times [2021-11-03 03:48:37,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:37,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713305522] [2021-11-03 03:48:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:37,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:37,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:37,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:37,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:48:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:37,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:48:37,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:37,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:37,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:37,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713305522] [2021-11-03 03:48:37,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713305522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:37,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:37,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:48:37,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838926663] [2021-11-03 03:48:37,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:48:37,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:37,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:48:37,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:48:37,845 INFO L87 Difference]: Start difference. First operand 1971 states and 2278 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:37,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:37,995 INFO L93 Difference]: Finished difference Result 3561 states and 4155 transitions. [2021-11-03 03:48:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:48:37,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 03:48:37,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:38,013 INFO L225 Difference]: With dead ends: 3561 [2021-11-03 03:48:38,013 INFO L226 Difference]: Without dead ends: 3561 [2021-11-03 03:48:38,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:48:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-11-03 03:48:38,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 2934. [2021-11-03 03:48:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2109 states have (on average 1.9672830725462305) internal successors, (4149), 2933 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4149 transitions. [2021-11-03 03:48:38,113 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4149 transitions. Word has length 6 [2021-11-03 03:48:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:38,113 INFO L470 AbstractCegarLoop]: Abstraction has 2934 states and 4149 transitions. [2021-11-03 03:48:38,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4149 transitions. [2021-11-03 03:48:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 03:48:38,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:38,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:38,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:38,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:38,325 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-03 03:48:38,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:38,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798431380] [2021-11-03 03:48:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:38,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:38,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:38,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:38,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:48:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:38,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:48:38,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:38,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:38,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:38,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798431380] [2021-11-03 03:48:38,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798431380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:38,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:38,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:48:38,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814971567] [2021-11-03 03:48:38,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:48:38,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:48:38,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:48:38,607 INFO L87 Difference]: Start difference. First operand 2934 states and 4149 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:38,649 INFO L93 Difference]: Finished difference Result 2874 states and 4063 transitions. [2021-11-03 03:48:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:48:38,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 03:48:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:38,665 INFO L225 Difference]: With dead ends: 2874 [2021-11-03 03:48:38,666 INFO L226 Difference]: Without dead ends: 2874 [2021-11-03 03:48:38,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:48:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2021-11-03 03:48:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2874. [2021-11-03 03:48:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2073 states have (on average 1.9599614085865895) internal successors, (4063), 2873 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 4063 transitions. [2021-11-03 03:48:38,738 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 4063 transitions. Word has length 11 [2021-11-03 03:48:38,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:38,739 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 4063 transitions. [2021-11-03 03:48:38,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 4063 transitions. [2021-11-03 03:48:38,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 03:48:38,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:38,744 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:38,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:38,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:38,958 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:38,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:38,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-03 03:48:38,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:38,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706018256] [2021-11-03 03:48:38,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:38,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:38,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:38,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:38,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:48:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:48:39,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:39,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:39,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:39,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706018256] [2021-11-03 03:48:39,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706018256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:39,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:39,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:48:39,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668193000] [2021-11-03 03:48:39,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:48:39,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:39,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:48:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:48:39,225 INFO L87 Difference]: Start difference. First operand 2874 states and 4063 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:39,319 INFO L93 Difference]: Finished difference Result 2846 states and 4007 transitions. [2021-11-03 03:48:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:48:39,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 03:48:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:39,335 INFO L225 Difference]: With dead ends: 2846 [2021-11-03 03:48:39,335 INFO L226 Difference]: Without dead ends: 2846 [2021-11-03 03:48:39,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:48:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-11-03 03:48:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2844. [2021-11-03 03:48:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2057 states have (on average 1.9470102090422945) internal successors, (4005), 2843 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:39,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4005 transitions. [2021-11-03 03:48:39,399 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4005 transitions. Word has length 13 [2021-11-03 03:48:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:39,400 INFO L470 AbstractCegarLoop]: Abstraction has 2844 states and 4005 transitions. [2021-11-03 03:48:39,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4005 transitions. [2021-11-03 03:48:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 03:48:39,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:39,401 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:39,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:39,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:39,613 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:39,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:39,614 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-03 03:48:39,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:39,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880210932] [2021-11-03 03:48:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:39,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:39,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:39,615 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:39,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:48:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:39,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:48:39,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:39,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:48:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:39,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:40,041 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:40,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880210932] [2021-11-03 03:48:40,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880210932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:40,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:40,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:48:40,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058225944] [2021-11-03 03:48:40,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:48:40,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:48:40,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:48:40,044 INFO L87 Difference]: Start difference. First operand 2844 states and 4005 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:44,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:44,204 INFO L93 Difference]: Finished difference Result 4540 states and 6165 transitions. [2021-11-03 03:48:44,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:48:44,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 03:48:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:44,227 INFO L225 Difference]: With dead ends: 4540 [2021-11-03 03:48:44,228 INFO L226 Difference]: Without dead ends: 4540 [2021-11-03 03:48:44,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:48:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2021-11-03 03:48:44,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 2840. [2021-11-03 03:48:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2057 states have (on average 1.9431210500729217) internal successors, (3997), 2839 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 3997 transitions. [2021-11-03 03:48:44,302 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 3997 transitions. Word has length 27 [2021-11-03 03:48:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:44,303 INFO L470 AbstractCegarLoop]: Abstraction has 2840 states and 3997 transitions. [2021-11-03 03:48:44,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 3997 transitions. [2021-11-03 03:48:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 03:48:44,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:44,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:44,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:44,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:44,518 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:44,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-03 03:48:44,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:44,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824252617] [2021-11-03 03:48:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:44,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:44,523 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:44,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:48:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:44,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:48:44,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:44,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:48:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:45,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:45,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:45,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824252617] [2021-11-03 03:48:45,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824252617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:45,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:45,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:48:45,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238430075] [2021-11-03 03:48:45,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:48:45,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:45,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:48:45,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:48:45,427 INFO L87 Difference]: Start difference. First operand 2840 states and 3997 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:55,354 INFO L93 Difference]: Finished difference Result 3820 states and 5031 transitions. [2021-11-03 03:48:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:48:55,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 03:48:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:55,375 INFO L225 Difference]: With dead ends: 3820 [2021-11-03 03:48:55,375 INFO L226 Difference]: Without dead ends: 3820 [2021-11-03 03:48:55,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:48:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2021-11-03 03:48:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 2836. [2021-11-03 03:48:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2057 states have (on average 1.9392318911035489) internal successors, (3989), 2835 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 3989 transitions. [2021-11-03 03:48:55,437 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 3989 transitions. Word has length 27 [2021-11-03 03:48:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:55,438 INFO L470 AbstractCegarLoop]: Abstraction has 2836 states and 3989 transitions. [2021-11-03 03:48:55,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 3989 transitions. [2021-11-03 03:48:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 03:48:55,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:55,440 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:55,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:55,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:55,654 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:55,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:55,655 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-03 03:48:55,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:55,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502977948] [2021-11-03 03:48:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:55,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:55,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:55,657 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:55,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:48:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:55,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:48:55,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:56,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:56,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:56,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502977948] [2021-11-03 03:48:56,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502977948] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:56,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:56,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:48:56,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191658690] [2021-11-03 03:48:56,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:48:56,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:48:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:48:56,207 INFO L87 Difference]: Start difference. First operand 2836 states and 3989 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:56,263 INFO L93 Difference]: Finished difference Result 2824 states and 3969 transitions. [2021-11-03 03:48:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:48:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 03:48:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:56,276 INFO L225 Difference]: With dead ends: 2824 [2021-11-03 03:48:56,277 INFO L226 Difference]: Without dead ends: 2824 [2021-11-03 03:48:56,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:48:56,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2021-11-03 03:48:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2824. [2021-11-03 03:48:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2045 states have (on average 1.9408312958435208) internal successors, (3969), 2823 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 3969 transitions. [2021-11-03 03:48:56,332 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 3969 transitions. Word has length 42 [2021-11-03 03:48:56,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:56,332 INFO L470 AbstractCegarLoop]: Abstraction has 2824 states and 3969 transitions. [2021-11-03 03:48:56,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:56,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 3969 transitions. [2021-11-03 03:48:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 03:48:56,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:56,334 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:56,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:56,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:56,547 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:56,547 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-03 03:48:56,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:56,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415362359] [2021-11-03 03:48:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:56,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:56,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:56,549 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:56,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:48:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:56,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:48:56,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:57,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:57,587 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:57,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415362359] [2021-11-03 03:48:57,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415362359] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:57,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:57,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:48:57,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367103098] [2021-11-03 03:48:57,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:48:57,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:57,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:48:57,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:48:57,589 INFO L87 Difference]: Start difference. First operand 2824 states and 3969 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:57,801 INFO L93 Difference]: Finished difference Result 3013 states and 4004 transitions. [2021-11-03 03:48:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:48:57,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 03:48:57,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:57,809 INFO L225 Difference]: With dead ends: 3013 [2021-11-03 03:48:57,810 INFO L226 Difference]: Without dead ends: 3013 [2021-11-03 03:48:57,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:48:57,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2021-11-03 03:48:57,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 2640. [2021-11-03 03:48:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 1861 states have (on average 1.9419666845781838) internal successors, (3614), 2639 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3614 transitions. [2021-11-03 03:48:57,862 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3614 transitions. Word has length 50 [2021-11-03 03:48:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:57,863 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 3614 transitions. [2021-11-03 03:48:57,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3614 transitions. [2021-11-03 03:48:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 03:48:57,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:57,865 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:57,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:58,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:58,078 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:48:58,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:58,078 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-03 03:48:58,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:58,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21340165] [2021-11-03 03:48:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:58,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:58,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:58,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:58,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:48:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:58,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:48:58,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:58,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:48:58,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:48:59,284 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 03:48:59,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-03 03:48:59,293 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 03:48:59,293 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 28 treesize of output 24 [2021-11-03 03:48:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:59,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:04,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:49:04,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21340165] [2021-11-03 03:49:04,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21340165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:49:04,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:49:04,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:49:04,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704461052] [2021-11-03 03:49:04,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:49:04,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:49:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:49:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 03:49:04,214 INFO L87 Difference]: Start difference. First operand 2640 states and 3614 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:49:28,886 INFO L93 Difference]: Finished difference Result 4374 states and 5903 transitions. [2021-11-03 03:49:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:49:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 03:49:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:49:28,895 INFO L225 Difference]: With dead ends: 4374 [2021-11-03 03:49:28,895 INFO L226 Difference]: Without dead ends: 4374 [2021-11-03 03:49:28,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 03:49:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2021-11-03 03:49:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 2798. [2021-11-03 03:49:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2057 states have (on average 1.8959649975692756) internal successors, (3900), 2797 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 3900 transitions. [2021-11-03 03:49:28,978 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 3900 transitions. Word has length 53 [2021-11-03 03:49:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:49:28,978 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 3900 transitions. [2021-11-03 03:49:28,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 3900 transitions. [2021-11-03 03:49:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 03:49:28,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:49:28,980 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:49:28,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:49:29,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:49:29,193 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:49:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:49:29,194 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-03 03:49:29,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:49:29,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015861762] [2021-11-03 03:49:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:29,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:49:29,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:49:29,196 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:49:29,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 03:49:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:49:29,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:49:29,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:49:29,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:49:29,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-03 03:49:29,795 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 11 [2021-11-03 03:49:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:29,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:29,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:49:29,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015861762] [2021-11-03 03:49:29,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015861762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:49:29,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:49:29,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:49:29,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190774224] [2021-11-03 03:49:29,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:49:29,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:49:29,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:49:29,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:49:29,993 INFO L87 Difference]: Start difference. First operand 2798 states and 3900 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:49:39,721 INFO L93 Difference]: Finished difference Result 4082 states and 5468 transitions. [2021-11-03 03:49:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:49:39,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 03:49:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:49:39,730 INFO L225 Difference]: With dead ends: 4082 [2021-11-03 03:49:39,731 INFO L226 Difference]: Without dead ends: 4082 [2021-11-03 03:49:39,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:49:39,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-11-03 03:49:39,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2797. [2021-11-03 03:49:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2057 states have (on average 1.8949927078269324) internal successors, (3898), 2796 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3898 transitions. [2021-11-03 03:49:39,776 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3898 transitions. Word has length 59 [2021-11-03 03:49:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:49:39,777 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 3898 transitions. [2021-11-03 03:49:39,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:39,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3898 transitions. [2021-11-03 03:49:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 03:49:39,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:49:39,779 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:49:39,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:49:39,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:49:39,992 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:49:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:49:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-03 03:49:39,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:49:39,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820549049] [2021-11-03 03:49:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:39,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:49:39,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:49:39,994 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:49:39,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:49:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:49:40,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 03:49:40,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:49:40,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:49:40,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-03 03:49:40,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 03:49:40,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-03 03:49:40,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-03 03:49:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:40,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:41,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:49:41,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820549049] [2021-11-03 03:49:41,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820549049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:49:41,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:49:41,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 03:49:41,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192409177] [2021-11-03 03:49:41,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:49:41,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:49:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:49:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:49:41,308 INFO L87 Difference]: Start difference. First operand 2797 states and 3898 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:17,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:17,165 INFO L93 Difference]: Finished difference Result 3854 states and 5137 transitions. [2021-11-03 03:50:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 03:50:17,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 03:50:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:17,173 INFO L225 Difference]: With dead ends: 3854 [2021-11-03 03:50:17,174 INFO L226 Difference]: Without dead ends: 3854 [2021-11-03 03:50:17,174 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:50:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-11-03 03:50:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 2796. [2021-11-03 03:50:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2796 states, 2057 states have (on average 1.8940204180845892) internal successors, (3896), 2795 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 3896 transitions. [2021-11-03 03:50:17,218 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 3896 transitions. Word has length 60 [2021-11-03 03:50:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:17,219 INFO L470 AbstractCegarLoop]: Abstraction has 2796 states and 3896 transitions. [2021-11-03 03:50:17,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 3896 transitions. [2021-11-03 03:50:17,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 03:50:17,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:17,220 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:17,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:17,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:17,434 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:50:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-03 03:50:17,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:17,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608011216] [2021-11-03 03:50:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:17,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:17,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:17,436 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:17,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 03:50:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:17,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:50:17,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:18,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:18,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:18,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608011216] [2021-11-03 03:50:18,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608011216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:18,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:18,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:50:18,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553116567] [2021-11-03 03:50:18,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:50:18,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:18,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:50:18,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:50:18,200 INFO L87 Difference]: Start difference. First operand 2796 states and 3896 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:18,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:18,563 INFO L93 Difference]: Finished difference Result 4108 states and 5487 transitions. [2021-11-03 03:50:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:50:18,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 03:50:18,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:18,572 INFO L225 Difference]: With dead ends: 4108 [2021-11-03 03:50:18,572 INFO L226 Difference]: Without dead ends: 4108 [2021-11-03 03:50:18,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:50:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-11-03 03:50:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 2814. [2021-11-03 03:50:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2075 states have (on average 1.8862650602409639) internal successors, (3914), 2813 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3914 transitions. [2021-11-03 03:50:18,613 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3914 transitions. Word has length 64 [2021-11-03 03:50:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:18,613 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 3914 transitions. [2021-11-03 03:50:18,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3914 transitions. [2021-11-03 03:50:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 03:50:18,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:18,614 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:18,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:18,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:18,828 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:50:18,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:18,828 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-03 03:50:18,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:18,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839475672] [2021-11-03 03:50:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:18,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:18,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:18,830 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:18,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 03:50:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:19,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:50:19,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:19,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:19,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:19,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839475672] [2021-11-03 03:50:19,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839475672] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:19,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1887204851] [2021-11-03 03:50:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:19,804 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:19,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:50:19,806 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:50:19,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 03:50:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:20,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:50:20,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:20,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:20,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1887204851] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:20,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224919208] [2021-11-03 03:50:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:20,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:20,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:20,831 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:50:20,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 03:50:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:21,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:50:21,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:21,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:21,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224919208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:21,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:50:21,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 03:50:21,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997705663] [2021-11-03 03:50:21,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:50:21,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:21,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:50:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:50:21,832 INFO L87 Difference]: Start difference. First operand 2814 states and 3914 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:22,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:22,476 INFO L93 Difference]: Finished difference Result 4144 states and 5523 transitions. [2021-11-03 03:50:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:50:22,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 03:50:22,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:22,485 INFO L225 Difference]: With dead ends: 4144 [2021-11-03 03:50:22,486 INFO L226 Difference]: Without dead ends: 4144 [2021-11-03 03:50:22,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:50:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2021-11-03 03:50:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 2850. [2021-11-03 03:50:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2111 states have (on average 1.871151113216485) internal successors, (3950), 2849 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3950 transitions. [2021-11-03 03:50:22,530 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3950 transitions. Word has length 66 [2021-11-03 03:50:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:22,531 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 3950 transitions. [2021-11-03 03:50:22,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3950 transitions. [2021-11-03 03:50:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 03:50:22,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:22,532 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:22,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:22,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-03 03:50:22,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:23,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:23,147 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:50:23,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:23,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-03 03:50:23,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:23,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96358138] [2021-11-03 03:50:23,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:50:23,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:23,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:23,149 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:23,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 03:50:24,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:50:24,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:50:24,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:50:24,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:24,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:24,899 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:24,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96358138] [2021-11-03 03:50:24,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96358138] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:24,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1621072755] [2021-11-03 03:50:24,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:50:24,900 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:50:24,904 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:50:24,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 03:50:26,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:50:26,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:50:26,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:50:26,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:26,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:26,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1621072755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:26,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575469240] [2021-11-03 03:50:26,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:50:26,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:26,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:26,971 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:50:26,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 03:50:41,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:50:41,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:50:41,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:50:41,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:42,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:42,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575469240] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:42,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:50:42,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-03 03:50:42,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803589960] [2021-11-03 03:50:42,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 03:50:42,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:42,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 03:50:42,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-03 03:50:42,308 INFO L87 Difference]: Start difference. First operand 2850 states and 3950 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:45,870 INFO L93 Difference]: Finished difference Result 4216 states and 5595 transitions. [2021-11-03 03:50:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 03:50:45,870 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-03 03:50:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:45,875 INFO L225 Difference]: With dead ends: 4216 [2021-11-03 03:50:45,876 INFO L226 Difference]: Without dead ends: 4216 [2021-11-03 03:50:45,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=370, Invalid=622, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:50:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2021-11-03 03:50:45,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 2922. [2021-11-03 03:50:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2183 states have (on average 1.842418689876317) internal successors, (4022), 2921 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 4022 transitions. [2021-11-03 03:50:45,934 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 4022 transitions. Word has length 70 [2021-11-03 03:50:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:45,935 INFO L470 AbstractCegarLoop]: Abstraction has 2922 states and 4022 transitions. [2021-11-03 03:50:45,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 4022 transitions. [2021-11-03 03:50:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:50:45,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:45,941 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:45,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:46,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:46,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-03 03:50:46,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:46,566 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 03:50:46,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996130, now seen corresponding path program 3 times [2021-11-03 03:50:46,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:46,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226622636] [2021-11-03 03:50:46,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:50:46,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:46,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:46,568 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:46,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 03:50:47,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 03:50:47,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:50:47,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:50:47,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:48,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:49,818 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:49,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226622636] [2021-11-03 03:50:49,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226622636] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:49,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [848639684] [2021-11-03 03:50:49,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:50:49,819 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:49,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:50:49,819 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:50:49,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 03:50:57,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 03:50:57,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:50:57,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:50:57,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:57,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:57,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [848639684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:57,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531069929] [2021-11-03 03:50:57,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:50:57,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:57,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:57,926 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:50:57,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae812de-28e1-48e5-8959-e43fda4b3c2f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process