./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P --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 dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:15:34,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:15:34,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:15:34,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:15:34,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:15:34,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:15:34,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:15:34,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:15:34,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:15:34,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:15:34,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:15:34,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:15:34,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:15:34,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:15:34,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:15:34,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:15:34,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:15:34,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:15:34,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:15:34,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:15:34,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:15:34,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:15:34,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:15:34,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:15:35,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:15:35,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:15:35,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:15:35,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:15:35,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:15:35,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:15:35,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:15:35,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:15:35,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:15:35,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:15:35,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:15:35,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:15:35,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:15:35,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:15:35,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:15:35,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:15:35,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:15:35,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:15:35,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:15:35,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:15:35,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:15:35,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:15:35,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:15:35,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:15:35,080 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:15:35,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:15:35,081 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:15:35,081 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:15:35,081 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:15:35,081 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:15:35,081 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:15:35,082 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:15:35,082 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:15:35,082 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:15:35,082 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:15:35,082 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:15:35,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:15:35,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:15:35,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:15:35,084 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:15:35,084 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:15:35,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:15:35,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:15:35,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:15:35,084 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:15:35,085 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:15:35,085 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:15:35,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:15:35,085 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:15:35,085 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:15:35,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:15:35,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:15:35,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:15:35,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:15:35,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:15:35,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:15:35,087 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:15:35,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:15:35,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:15:35,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:15:35,087 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_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2021-11-21 01:15:35,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:15:35,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:15:35,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:15:35,486 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:15:35,486 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:15:35,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-21 01:15:35,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data/beba13008/a0111e75707b403ca147afbfb64852ab/FLAG4ef99ee0b [2021-11-21 01:15:36,186 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:15:36,186 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-21 01:15:36,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data/beba13008/a0111e75707b403ca147afbfb64852ab/FLAG4ef99ee0b [2021-11-21 01:15:36,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data/beba13008/a0111e75707b403ca147afbfb64852ab [2021-11-21 01:15:36,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:15:36,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:15:36,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:15:36,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:15:36,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:15:36,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:15:36" (1/1) ... [2021-11-21 01:15:36,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a91207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:36, skipping insertion in model container [2021-11-21 01:15:36,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:15:36" (1/1) ... [2021-11-21 01:15:36,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:15:36,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:15:37,064 WARN L230 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_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-21 01:15:37,206 WARN L230 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_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-21 01:15:37,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:15:37,231 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) [2021-11-21 01:15:37,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ad0fe92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:37, skipping insertion in model container [2021-11-21 01:15:37,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:15:37,235 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 01:15:37,237 INFO L158 Benchmark]: Toolchain (without parser) took 818.18ms. Allocated memory is still 115.3MB. Free memory was 74.6MB in the beginning and 78.8MB in the end (delta: -4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:15:37,239 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:15:37,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 813.90ms. Allocated memory is still 115.3MB. Free memory was 74.4MB in the beginning and 79.2MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:15:37,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 813.90ms. Allocated memory is still 115.3MB. Free memory was 74.4MB in the beginning and 79.2MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P --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 dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:15:39,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:15:39,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:15:39,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:15:39,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:15:39,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:15:39,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:15:39,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:15:39,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:15:39,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:15:39,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:15:39,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:15:39,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:15:39,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:15:39,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:15:39,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:15:39,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:15:39,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:15:39,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:15:39,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:15:39,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:15:39,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:15:39,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:15:39,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:15:39,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:15:39,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:15:39,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:15:39,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:15:39,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:15:39,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:15:39,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:15:39,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:15:39,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:15:39,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:15:39,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:15:39,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:15:39,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:15:39,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:15:39,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:15:39,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:15:39,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:15:39,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 01:15:39,662 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:15:39,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:15:39,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:15:39,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:15:39,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:15:39,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:15:39,665 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:15:39,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:15:39,665 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:15:39,665 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:15:39,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:15:39,667 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:15:39,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:15:39,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:15:39,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:15:39,669 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:15:39,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:15:39,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:15:39,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:15:39,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:15:39,670 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:15:39,670 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:15:39,670 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:15:39,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:15:39,671 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:15:39,671 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:15:39,671 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:15:39,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:15:39,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:15:39,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:15:39,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:15:39,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:15:39,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:15:39,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:15:39,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:15:39,673 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:15:39,673 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:15:39,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:15:39,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:15:39,674 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_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2021-11-21 01:15:40,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:15:40,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:15:40,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:15:40,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:15:40,073 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:15:40,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-21 01:15:40,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data/3d209a818/93f7a88bff2440559dd0ff4c2ba611f4/FLAG62abd77f5 [2021-11-21 01:15:40,890 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:15:40,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-21 01:15:40,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data/3d209a818/93f7a88bff2440559dd0ff4c2ba611f4/FLAG62abd77f5 [2021-11-21 01:15:41,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/data/3d209a818/93f7a88bff2440559dd0ff4c2ba611f4 [2021-11-21 01:15:41,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:15:41,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:15:41,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:15:41,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:15:41,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:15:41,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:15:41" (1/1) ... [2021-11-21 01:15:41,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dbc416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:41, skipping insertion in model container [2021-11-21 01:15:41,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:15:41" (1/1) ... [2021-11-21 01:15:41,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:15:41,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:15:41,568 WARN L230 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_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-21 01:15:41,665 WARN L230 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_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-21 01:15:41,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:15:41,687 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 01:15:41,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:15:41,733 WARN L230 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_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-21 01:15:41,842 WARN L230 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_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-21 01:15:41,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:15:41,869 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:15:41,900 WARN L230 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_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-21 01:15:41,962 WARN L230 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_a499ec3f-489f-4cef-9c59-a58537739b51/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-21 01:15:41,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:15:42,066 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:15:42,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42 WrapperNode [2021-11-21 01:15:42,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:15:42,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:15:42,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:15:42,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:15:42,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,198 INFO L137 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 890 [2021-11-21 01:15:42,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:15:42,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:15:42,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:15:42,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:15:42,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:15:42,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:15:42,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:15:42,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:15:42,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (1/1) ... [2021-11-21 01:15:42,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:15:42,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:15:42,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:15:42,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:15:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-21 01:15:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:15:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:15:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:15:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:15:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:15:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:15:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:15:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:15:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:15:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:15:42,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:15:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:15:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:15:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:15:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:15:42,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:15:42,714 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:15:42,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:15:42,720 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:15:47,217 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:15:47,233 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:15:47,236 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-21 01:15:47,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:15:47 BoogieIcfgContainer [2021-11-21 01:15:47,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:15:47,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:15:47,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:15:47,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:15:47,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:15:41" (1/3) ... [2021-11-21 01:15:47,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff973c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:15:47, skipping insertion in model container [2021-11-21 01:15:47,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:42" (2/3) ... [2021-11-21 01:15:47,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff973c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:15:47, skipping insertion in model container [2021-11-21 01:15:47,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:15:47" (3/3) ... [2021-11-21 01:15:47,252 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-1.i [2021-11-21 01:15:47,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:15:47,259 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-21 01:15:47,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:15:47,328 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 [2021-11-21 01:15:47,329 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-21 01:15:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:15:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:15:47,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:15:47,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:15:47,381 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:15:47,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:15:47,391 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-21 01:15:47,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:15:47,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369462752] [2021-11-21 01:15:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:47,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:15:47,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:15:47,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:15:47,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:15:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:47,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:15:47,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:15:47,661 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 [2021-11-21 01:15:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:47,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:15:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:47,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:15:47,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369462752] [2021-11-21 01:15:47,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369462752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:15:47,726 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:15:47,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:15:47,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020391198] [2021-11-21 01:15:47,729 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:15:47,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:15:47,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:15:47,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:15:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:15:47,786 INFO L87 Difference]: Start difference. First operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:15:49,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:15:49,433 INFO L93 Difference]: Finished difference Result 869 states and 925 transitions. [2021-11-21 01:15:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:15:49,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-21 01:15:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:15:49,461 INFO L225 Difference]: With dead ends: 869 [2021-11-21 01:15:49,462 INFO L226 Difference]: Without dead ends: 867 [2021-11-21 01:15:49,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:15:49,467 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 804 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:15:49,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 582 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-21 01:15:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-21 01:15:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 866. [2021-11-21 01:15:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 443 states have (on average 2.0474040632054176) internal successors, (907), 860 states have internal predecessors, (907), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:15:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 923 transitions. [2021-11-21 01:15:49,583 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 923 transitions. Word has length 3 [2021-11-21 01:15:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:15:49,583 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 923 transitions. [2021-11-21 01:15:49,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:15:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 923 transitions. [2021-11-21 01:15:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:15:49,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:15:49,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:15:49,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:15:49,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:15:49,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:15:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:15:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-21 01:15:49,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:15:49,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540641987] [2021-11-21 01:15:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:49,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:15:49,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:15:49,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:15:49,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:15:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:49,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:15:49,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:15:49,948 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 [2021-11-21 01:15:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:49,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:15:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:50,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:15:50,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540641987] [2021-11-21 01:15:50,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540641987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:15:50,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:15:50,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:15:50,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803668229] [2021-11-21 01:15:50,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:15:50,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:15:50,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:15:50,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:15:50,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:15:50,013 INFO L87 Difference]: Start difference. First operand 866 states and 923 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-11-21 01:15:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:15:53,690 INFO L93 Difference]: Finished difference Result 1160 states and 1251 transitions. [2021-11-21 01:15:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:15:53,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 3 [2021-11-21 01:15:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:15:53,698 INFO L225 Difference]: With dead ends: 1160 [2021-11-21 01:15:53,699 INFO L226 Difference]: Without dead ends: 1160 [2021-11-21 01:15:53,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:15:53,700 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 767 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:15:53,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 1382 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:15:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-11-21 01:15:53,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 901. [2021-11-21 01:15:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 487 states have (on average 2.024640657084189) internal successors, (986), 895 states have internal predecessors, (986), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:15:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1002 transitions. [2021-11-21 01:15:53,730 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1002 transitions. Word has length 3 [2021-11-21 01:15:53,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:15:53,730 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1002 transitions. [2021-11-21 01:15:53,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-11-21 01:15:53,731 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1002 transitions. [2021-11-21 01:15:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:15:53,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:15:53,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:15:53,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:15:53,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:15:53,942 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:15:53,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:15:53,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-21 01:15:53,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:15:53,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603165689] [2021-11-21 01:15:53,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:53,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:15:53,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:15:53,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:15:53,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:15:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:54,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:15:54,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:15:54,072 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 [2021-11-21 01:15:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:54,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:15:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:54,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:15:54,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603165689] [2021-11-21 01:15:54,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603165689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:15:54,122 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:15:54,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:15:54,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795504477] [2021-11-21 01:15:54,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:15:54,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:15:54,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:15:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:15:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:15:54,129 INFO L87 Difference]: Start difference. First operand 901 states and 1002 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-11-21 01:15:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:15:55,859 INFO L93 Difference]: Finished difference Result 1078 states and 1206 transitions. [2021-11-21 01:15:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:15:55,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 8 [2021-11-21 01:15:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:15:55,868 INFO L225 Difference]: With dead ends: 1078 [2021-11-21 01:15:55,868 INFO L226 Difference]: Without dead ends: 1078 [2021-11-21 01:15:55,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:15:55,870 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 816 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:15:55,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 874 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 01:15:55,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-21 01:15:55,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 854. [2021-11-21 01:15:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 487 states have (on average 1.9219712525667352) internal successors, (936), 848 states have internal predecessors, (936), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:15:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 952 transitions. [2021-11-21 01:15:55,912 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 952 transitions. Word has length 8 [2021-11-21 01:15:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:15:55,912 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 952 transitions. [2021-11-21 01:15:55,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-11-21 01:15:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 952 transitions. [2021-11-21 01:15:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:15:55,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:15:55,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:15:55,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:15:56,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:15:56,126 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:15:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:15:56,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-21 01:15:56,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:15:56,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233288957] [2021-11-21 01:15:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:56,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:15:56,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:15:56,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:15:56,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:15:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:56,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:15:56,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:15:56,279 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 [2021-11-21 01:15:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:56,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:15:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:56,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:15:56,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233288957] [2021-11-21 01:15:56,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233288957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:15:56,405 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:15:56,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:15:56,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541931857] [2021-11-21 01:15:56,406 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:15:56,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:15:56,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:15:56,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:15:56,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:15:56,407 INFO L87 Difference]: Start difference. First operand 854 states and 952 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:00,672 INFO L93 Difference]: Finished difference Result 1110 states and 1201 transitions. [2021-11-21 01:16:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:16:00,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:16:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:00,681 INFO L225 Difference]: With dead ends: 1110 [2021-11-21 01:16:00,681 INFO L226 Difference]: Without dead ends: 1110 [2021-11-21 01:16:00,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:16:00,683 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 544 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:00,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1523 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 01:16:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-21 01:16:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 844. [2021-11-21 01:16:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 487 states have (on average 1.895277207392197) internal successors, (923), 838 states have internal predecessors, (923), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:16:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 939 transitions. [2021-11-21 01:16:00,711 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 939 transitions. Word has length 8 [2021-11-21 01:16:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:00,711 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 939 transitions. [2021-11-21 01:16:00,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 939 transitions. [2021-11-21 01:16:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:16:00,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:00,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:00,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:00,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:00,924 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:00,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2106311903, now seen corresponding path program 1 times [2021-11-21 01:16:00,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:00,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398431560] [2021-11-21 01:16:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:00,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:00,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:00,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:00,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:16:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:01,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:16:01,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:01,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:01,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:01,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:01,235 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-21 01:16:01,235 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-21 01:16:01,334 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-21 01:16:01,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-21 01:16:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:01,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:01,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:01,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398431560] [2021-11-21 01:16:01,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398431560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:01,424 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:01,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:16:01,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779703470] [2021-11-21 01:16:01,425 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:01,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:16:01,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:01,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:16:01,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:01,426 INFO L87 Difference]: Start difference. First operand 844 states and 939 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2021-11-21 01:16:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:03,404 INFO L93 Difference]: Finished difference Result 1061 states and 1185 transitions. [2021-11-21 01:16:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:16:03,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 10 [2021-11-21 01:16:03,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:03,411 INFO L225 Difference]: With dead ends: 1061 [2021-11-21 01:16:03,411 INFO L226 Difference]: Without dead ends: 1061 [2021-11-21 01:16:03,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:16:03,413 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 237 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:03,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 3042 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-21 01:16:03,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2021-11-21 01:16:03,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 844. [2021-11-21 01:16:03,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 487 states have (on average 1.893223819301848) internal successors, (922), 838 states have internal predecessors, (922), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:16:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 938 transitions. [2021-11-21 01:16:03,438 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 938 transitions. Word has length 10 [2021-11-21 01:16:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:03,439 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 938 transitions. [2021-11-21 01:16:03,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2021-11-21 01:16:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 938 transitions. [2021-11-21 01:16:03,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:16:03,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:03,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:03,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:03,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:03,652 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:03,653 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-21 01:16:03,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:03,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5325177] [2021-11-21 01:16:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:03,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:03,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:03,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:03,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:16:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:03,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:16:03,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:03,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:03,871 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:03,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5325177] [2021-11-21 01:16:03,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5325177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:03,872 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:03,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:16:03,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826118694] [2021-11-21 01:16:03,872 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:03,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:16:03,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:16:03,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:16:03,874 INFO L87 Difference]: Start difference. First operand 844 states and 938 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:03,926 INFO L93 Difference]: Finished difference Result 811 states and 904 transitions. [2021-11-21 01:16:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:16:03,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 18 [2021-11-21 01:16:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:03,932 INFO L225 Difference]: With dead ends: 811 [2021-11-21 01:16:03,932 INFO L226 Difference]: Without dead ends: 811 [2021-11-21 01:16:03,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:16:03,933 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 1556 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:03,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:16:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-11-21 01:16:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 802. [2021-11-21 01:16:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 469 states have (on average 1.8742004264392325) internal successors, (879), 796 states have internal predecessors, (879), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:16:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 895 transitions. [2021-11-21 01:16:03,954 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 895 transitions. Word has length 18 [2021-11-21 01:16:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:03,954 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 895 transitions. [2021-11-21 01:16:03,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 895 transitions. [2021-11-21 01:16:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:16:03,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:03,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:03,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:04,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:04,167 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:04,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-21 01:16:04,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:04,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513234340] [2021-11-21 01:16:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:04,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:04,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:04,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:04,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:16:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:04,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:16:04,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:04,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:04,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:04,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513234340] [2021-11-21 01:16:04,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513234340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:04,381 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:04,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 01:16:04,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526189346] [2021-11-21 01:16:04,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:04,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:16:04,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:04,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:16:04,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:04,382 INFO L87 Difference]: Start difference. First operand 802 states and 895 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:04,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:04,485 INFO L93 Difference]: Finished difference Result 790 states and 876 transitions. [2021-11-21 01:16:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:16:04,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 20 [2021-11-21 01:16:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:04,491 INFO L225 Difference]: With dead ends: 790 [2021-11-21 01:16:04,491 INFO L226 Difference]: Without dead ends: 790 [2021-11-21 01:16:04,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:04,492 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 1488 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:04,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 1553 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:16:04,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-21 01:16:04,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 780. [2021-11-21 01:16:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 461 states have (on average 1.8438177874186552) internal successors, (850), 774 states have internal predecessors, (850), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:16:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 866 transitions. [2021-11-21 01:16:04,512 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 866 transitions. Word has length 20 [2021-11-21 01:16:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:04,513 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 866 transitions. [2021-11-21 01:16:04,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:04,513 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 866 transitions. [2021-11-21 01:16:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:16:04,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:04,514 INFO L514 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] [2021-11-21 01:16:04,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-21 01:16:04,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:04,725 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-21 01:16:04,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:04,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083475401] [2021-11-21 01:16:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:04,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:04,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:04,727 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:04,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:16:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:04,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:16:04,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:04,866 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 [2021-11-21 01:16:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:05,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:05,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:05,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083475401] [2021-11-21 01:16:05,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083475401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:05,114 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:05,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:16:05,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266390625] [2021-11-21 01:16:05,114 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:05,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:16:05,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:05,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:16:05,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:16:05,116 INFO L87 Difference]: Start difference. First operand 780 states and 866 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:06,799 INFO L93 Difference]: Finished difference Result 1012 states and 1128 transitions. [2021-11-21 01:16:06,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:16:06,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-21 01:16:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:06,806 INFO L225 Difference]: With dead ends: 1012 [2021-11-21 01:16:06,806 INFO L226 Difference]: Without dead ends: 1012 [2021-11-21 01:16:06,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:06,807 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1362 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:06,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 786 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-21 01:16:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-11-21 01:16:06,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 776. [2021-11-21 01:16:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 461 states have (on average 1.8351409978308026) internal successors, (846), 770 states have internal predecessors, (846), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:16:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 862 transitions. [2021-11-21 01:16:06,838 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 862 transitions. Word has length 34 [2021-11-21 01:16:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:06,838 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 862 transitions. [2021-11-21 01:16:06,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 862 transitions. [2021-11-21 01:16:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:16:06,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:06,839 INFO L514 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] [2021-11-21 01:16:06,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:07,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:07,060 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-21 01:16:07,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:07,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194578405] [2021-11-21 01:16:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:07,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:07,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:07,062 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:07,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:16:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:07,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:16:07,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:07,210 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 [2021-11-21 01:16:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:07,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:07,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:07,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194578405] [2021-11-21 01:16:07,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194578405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:07,949 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:07,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:16:07,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959579393] [2021-11-21 01:16:07,950 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:07,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:16:07,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:16:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:07,951 INFO L87 Difference]: Start difference. First operand 776 states and 862 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:12,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:12,747 INFO L93 Difference]: Finished difference Result 1050 states and 1132 transitions. [2021-11-21 01:16:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:16:12,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-11-21 01:16:12,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:12,753 INFO L225 Difference]: With dead ends: 1050 [2021-11-21 01:16:12,754 INFO L226 Difference]: Without dead ends: 1050 [2021-11-21 01:16:12,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:16:12,755 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1702 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:12,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 1248 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 01:16:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-11-21 01:16:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 772. [2021-11-21 01:16:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 461 states have (on average 1.82646420824295) internal successors, (842), 766 states have internal predecessors, (842), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:16:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 858 transitions. [2021-11-21 01:16:12,777 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 858 transitions. Word has length 34 [2021-11-21 01:16:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:12,778 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 858 transitions. [2021-11-21 01:16:12,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 858 transitions. [2021-11-21 01:16:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-21 01:16:12,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:12,780 INFO L514 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] [2021-11-21 01:16:12,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:12,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:12,992 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:12,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2021-11-21 01:16:12,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:12,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555390510] [2021-11-21 01:16:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:12,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:12,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:12,994 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:12,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:16:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:13,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:16:13,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:13,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:13,455 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:13,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555390510] [2021-11-21 01:16:13,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555390510] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:13,456 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:13,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:16:13,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543464782] [2021-11-21 01:16:13,456 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:13,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:16:13,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:13,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:16:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:16:13,457 INFO L87 Difference]: Start difference. First operand 772 states and 858 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:13,515 INFO L93 Difference]: Finished difference Result 775 states and 857 transitions. [2021-11-21 01:16:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:16:13,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-21 01:16:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:13,520 INFO L225 Difference]: With dead ends: 775 [2021-11-21 01:16:13,521 INFO L226 Difference]: Without dead ends: 775 [2021-11-21 01:16:13,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:13,522 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 725 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:13,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1531 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:16:13,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-21 01:16:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 766. [2021-11-21 01:16:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 455 states have (on average 1.8285714285714285) internal successors, (832), 760 states have internal predecessors, (832), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:16:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 848 transitions. [2021-11-21 01:16:13,541 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 848 transitions. Word has length 49 [2021-11-21 01:16:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:13,541 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 848 transitions. [2021-11-21 01:16:13,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 848 transitions. [2021-11-21 01:16:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 01:16:13,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:13,543 INFO L514 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] [2021-11-21 01:16:13,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:13,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:13,763 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:13,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2021-11-21 01:16:13,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:13,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918211445] [2021-11-21 01:16:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:13,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:13,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:13,766 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:13,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:16:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:13,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:16:13,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:14,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:14,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:14,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918211445] [2021-11-21 01:16:14,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918211445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:14,734 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:14,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:16:14,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818335001] [2021-11-21 01:16:14,734 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:14,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:16:14,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:14,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:16:14,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:14,735 INFO L87 Difference]: Start difference. First operand 766 states and 848 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:14,867 INFO L93 Difference]: Finished difference Result 966 states and 1070 transitions. [2021-11-21 01:16:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:16:14,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-21 01:16:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:14,872 INFO L225 Difference]: With dead ends: 966 [2021-11-21 01:16:14,872 INFO L226 Difference]: Without dead ends: 966 [2021-11-21 01:16:14,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:14,874 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 229 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:14,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1547 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:16:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-21 01:16:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 911. [2021-11-21 01:16:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 595 states have (on average 1.749579831932773) internal successors, (1041), 905 states have internal predecessors, (1041), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 01:16:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1067 transitions. [2021-11-21 01:16:14,898 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1067 transitions. Word has length 57 [2021-11-21 01:16:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:14,898 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1067 transitions. [2021-11-21 01:16:14,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1067 transitions. [2021-11-21 01:16:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-21 01:16:14,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:14,900 INFO L514 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] [2021-11-21 01:16:14,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:15,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:15,113 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-21 01:16:15,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:15,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554735620] [2021-11-21 01:16:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:15,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:15,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:15,116 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:15,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 01:16:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:15,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:16:15,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:15,477 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 [2021-11-21 01:16:15,486 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 [2021-11-21 01:16:16,155 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:16:16,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:16:16,179 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:16:16,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 01:16:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:16,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:21,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:21,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554735620] [2021-11-21 01:16:21,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554735620] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:21,031 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:21,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:16:21,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403515361] [2021-11-21 01:16:21,031 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:21,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:16:21,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:16:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 01:16:21,033 INFO L87 Difference]: Start difference. First operand 911 states and 1067 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:24,862 INFO L93 Difference]: Finished difference Result 1391 states and 1625 transitions. [2021-11-21 01:16:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:16:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-11-21 01:16:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:24,871 INFO L225 Difference]: With dead ends: 1391 [2021-11-21 01:16:24,871 INFO L226 Difference]: Without dead ends: 1391 [2021-11-21 01:16:24,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-21 01:16:24,872 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1150 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1127 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:24,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 1535 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1119 Invalid, 0 Unknown, 1127 Unchecked, 3.8s Time] [2021-11-21 01:16:24,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2021-11-21 01:16:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 889. [2021-11-21 01:16:24,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 605 states have (on average 1.6975206611570248) internal successors, (1027), 883 states have internal predecessors, (1027), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 01:16:24,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1053 transitions. [2021-11-21 01:16:24,897 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1053 transitions. Word has length 60 [2021-11-21 01:16:24,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:24,897 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1053 transitions. [2021-11-21 01:16:24,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1053 transitions. [2021-11-21 01:16:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 01:16:24,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:24,899 INFO L514 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] [2021-11-21 01:16:24,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:25,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:25,112 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-21 01:16:25,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:25,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978163445] [2021-11-21 01:16:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:25,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:25,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:25,114 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:25,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:16:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:25,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:16:25,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:25,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:25,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-21 01:16:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:25,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:25,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978163445] [2021-11-21 01:16:25,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978163445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:25,827 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:25,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:16:25,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617209453] [2021-11-21 01:16:25,827 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:25,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:16:25,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:25,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:16:25,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:25,828 INFO L87 Difference]: Start difference. First operand 889 states and 1053 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:27,116 INFO L93 Difference]: Finished difference Result 887 states and 1051 transitions. [2021-11-21 01:16:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:16:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 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 62 [2021-11-21 01:16:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:27,122 INFO L225 Difference]: With dead ends: 887 [2021-11-21 01:16:27,122 INFO L226 Difference]: Without dead ends: 887 [2021-11-21 01:16:27,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:27,123 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 706 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:27,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 454 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 01:16:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-21 01:16:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2021-11-21 01:16:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 605 states have (on average 1.6942148760330578) internal successors, (1025), 881 states have internal predecessors, (1025), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 01:16:27,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1051 transitions. [2021-11-21 01:16:27,155 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1051 transitions. Word has length 62 [2021-11-21 01:16:27,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:27,155 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1051 transitions. [2021-11-21 01:16:27,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1051 transitions. [2021-11-21 01:16:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 01:16:27,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:27,157 INFO L514 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, 1] [2021-11-21 01:16:27,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:27,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:27,370 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:27,370 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-21 01:16:27,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:27,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056393754] [2021-11-21 01:16:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:27,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:27,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:27,371 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:27,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:16:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:27,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:16:27,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:27,630 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 [2021-11-21 01:16:27,644 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 22 treesize of output 18 [2021-11-21 01:16:27,675 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 25 treesize of output 13 [2021-11-21 01:16:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:27,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:27,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:27,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056393754] [2021-11-21 01:16:27,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056393754] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:27,792 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:27,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:16:27,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253486850] [2021-11-21 01:16:27,793 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:27,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:16:27,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:27,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:16:27,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:27,794 INFO L87 Difference]: Start difference. First operand 887 states and 1051 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:29,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:29,936 INFO L93 Difference]: Finished difference Result 886 states and 1050 transitions. [2021-11-21 01:16:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:16:29,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-21 01:16:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:29,940 INFO L225 Difference]: With dead ends: 886 [2021-11-21 01:16:29,940 INFO L226 Difference]: Without dead ends: 886 [2021-11-21 01:16:29,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:16:29,941 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 4 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:29,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1889 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 01:16:29,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-11-21 01:16:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 886. [2021-11-21 01:16:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 605 states have (on average 1.6925619834710743) internal successors, (1024), 880 states have internal predecessors, (1024), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 01:16:29,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1050 transitions. [2021-11-21 01:16:29,958 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1050 transitions. Word has length 65 [2021-11-21 01:16:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:29,959 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1050 transitions. [2021-11-21 01:16:29,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1050 transitions. [2021-11-21 01:16:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 01:16:29,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:29,960 INFO L514 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, 1] [2021-11-21 01:16:29,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-21 01:16:30,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:30,173 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:30,173 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-21 01:16:30,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:30,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289306421] [2021-11-21 01:16:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:30,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:30,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:30,175 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:30,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 01:16:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:30,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:16:30,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:30,462 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 [2021-11-21 01:16:30,490 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 [2021-11-21 01:16:30,498 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 [2021-11-21 01:16:30,550 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 [2021-11-21 01:16:30,552 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 [2021-11-21 01:16:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:30,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:30,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:30,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289306421] [2021-11-21 01:16:30,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289306421] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:30,857 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:30,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 01:16:30,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405944364] [2021-11-21 01:16:30,858 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:30,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:16:30,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:16:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:16:30,859 INFO L87 Difference]: Start difference. First operand 886 states and 1050 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 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) [2021-11-21 01:16:37,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:37,422 INFO L93 Difference]: Finished difference Result 885 states and 1049 transitions. [2021-11-21 01:16:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:16:37,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 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 65 [2021-11-21 01:16:37,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:37,426 INFO L225 Difference]: With dead ends: 885 [2021-11-21 01:16:37,427 INFO L226 Difference]: Without dead ends: 885 [2021-11-21 01:16:37,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:16:37,428 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:37,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2675 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-21 01:16:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-11-21 01:16:37,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2021-11-21 01:16:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 604 states have (on average 1.6937086092715232) internal successors, (1023), 879 states have internal predecessors, (1023), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 01:16:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1049 transitions. [2021-11-21 01:16:37,446 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1049 transitions. Word has length 65 [2021-11-21 01:16:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:37,447 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1049 transitions. [2021-11-21 01:16:37,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 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) [2021-11-21 01:16:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1049 transitions. [2021-11-21 01:16:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 01:16:37,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:37,449 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:37,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:37,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:37,661 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1478911951, now seen corresponding path program 1 times [2021-11-21 01:16:37,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:37,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848128095] [2021-11-21 01:16:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:37,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:37,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:37,663 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:37,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 01:16:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:37,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:16:37,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:38,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:38,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:38,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848128095] [2021-11-21 01:16:38,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848128095] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:38,180 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:38,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:16:38,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452241154] [2021-11-21 01:16:38,180 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:38,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:16:38,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:38,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:16:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:38,183 INFO L87 Difference]: Start difference. First operand 885 states and 1049 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:16:38,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:38,307 INFO L93 Difference]: Finished difference Result 895 states and 1062 transitions. [2021-11-21 01:16:38,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:16:38,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-21 01:16:38,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:38,318 INFO L225 Difference]: With dead ends: 895 [2021-11-21 01:16:38,319 INFO L226 Difference]: Without dead ends: 895 [2021-11-21 01:16:38,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:16:38,321 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 7 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:38,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2877 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:16:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-21 01:16:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-11-21 01:16:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 612 states have (on average 1.6911764705882353) internal successors, (1035), 888 states have internal predecessors, (1035), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-21 01:16:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1062 transitions. [2021-11-21 01:16:38,354 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1062 transitions. Word has length 73 [2021-11-21 01:16:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:38,355 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1062 transitions. [2021-11-21 01:16:38,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:16:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1062 transitions. [2021-11-21 01:16:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 01:16:38,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:38,356 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:38,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:38,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:38,569 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:38,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:38,570 INFO L85 PathProgramCache]: Analyzing trace with hash 165650223, now seen corresponding path program 1 times [2021-11-21 01:16:38,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:38,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277243318] [2021-11-21 01:16:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:38,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:38,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:38,572 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:38,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 01:16:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:38,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:16:38,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:38,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:39,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:39,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277243318] [2021-11-21 01:16:39,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277243318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:16:39,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [91205590] [2021-11-21 01:16:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:39,231 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:16:39,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:16:39,233 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:16:39,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-21 01:16:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:39,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:16:39,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:39,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:39,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:39,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [91205590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:16:39,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998830653] [2021-11-21 01:16:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:39,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:16:39,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:16:39,800 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:16:39,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-21 01:16:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:40,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:16:40,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:40,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:40,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998830653] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:16:40,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:16:40,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-21 01:16:40,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810083584] [2021-11-21 01:16:40,434 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:16:40,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:16:40,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:16:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:16:40,435 INFO L87 Difference]: Start difference. First operand 895 states and 1062 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:16:40,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:40,909 INFO L93 Difference]: Finished difference Result 909 states and 1079 transitions. [2021-11-21 01:16:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:16:40,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-21 01:16:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:40,914 INFO L225 Difference]: With dead ends: 909 [2021-11-21 01:16:40,914 INFO L226 Difference]: Without dead ends: 903 [2021-11-21 01:16:40,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:16:40,915 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 31 mSDsluCounter, 3595 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:40,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 4318 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:16:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-11-21 01:16:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 901. [2021-11-21 01:16:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 618 states have (on average 1.686084142394822) internal successors, (1042), 894 states have internal predecessors, (1042), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-21 01:16:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1069 transitions. [2021-11-21 01:16:40,936 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1069 transitions. Word has length 75 [2021-11-21 01:16:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:40,936 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1069 transitions. [2021-11-21 01:16:40,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:16:40,937 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1069 transitions. [2021-11-21 01:16:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 01:16:40,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:40,938 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:40,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:41,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:41,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:41,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:16:41,551 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:16:41,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:41,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1807156719, now seen corresponding path program 2 times [2021-11-21 01:16:41,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:41,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505028558] [2021-11-21 01:16:41,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:16:41,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:41,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:41,554 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:41,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-21 01:16:41,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:16:41,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:16:41,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:16:41,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:42,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:42,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:42,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505028558] [2021-11-21 01:16:42,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505028558] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:16:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849598275] [2021-11-21 01:16:42,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:16:42,592 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:16:42,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:16:42,593 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:16:42,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-21 01:16:43,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:16:43,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:16:43,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:16:43,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:43,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:43,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [849598275] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:16:43,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260670315] [2021-11-21 01:16:43,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:16:43,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:16:43,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:16:43,678 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:16:43,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-21 01:17:12,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:17:12,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:17:12,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-21 01:17:12,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:12,881 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 [2021-11-21 01:17:13,068 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:17:13,069 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 13 treesize of output 13 [2021-11-21 01:17:13,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:17:13,135 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 [2021-11-21 01:17:13,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-21 01:17:13,331 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 31 treesize of output 19 [2021-11-21 01:17:13,335 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 19 treesize of output 13 [2021-11-21 01:19:14,537 WARN L227 SmtUtils]: Spent 19.68s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:19:14,537 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-21 01:19:14,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-21 01:19:24,617 WARN L227 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:19:24,619 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-21 01:19:24,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-21 01:19:35,841 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-21 01:19:35,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-21 01:19:35,860 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-21 01:19:35,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-21 01:19:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:19:48,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:20:03,730 WARN L227 SmtUtils]: Spent 15.19s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 01:21:33,026 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32))) (let ((.cse1 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse2 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse2) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse1 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse2)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 .cse4) .cse5 .cse4) .cse6 .cse4) .cse7 .cse4) .cse8 .cse4) .cse9 .cse4))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse11 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse11) (bvadd .cse11 (_ bv20 32)))))))) is different from false [2021-11-21 01:22:49,260 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd .cse10 (_ bv20 32))))) (forall ((v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16)))))))) is different from false [2021-11-21 01:22:56,173 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9) .cse13 .cse9) .cse14 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from true [2021-11-21 01:24:32,492 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse18 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse18) (bvadd .cse18 (_ bv20 32)))))))) is different from false [2021-11-21 01:24:34,502 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse18 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse18) (bvadd .cse18 (_ bv20 32)))))))) is different from true [2021-11-21 01:25:23,562 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:25:23,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-21 01:25:23,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-21 01:25:23,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34564640] [2021-11-21 01:25:23,563 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-21 01:25:23,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:25:23,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:25:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:25:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1119, Unknown=135, NotChecked=300, Total=1722 [2021-11-21 01:25:23,565 INFO L87 Difference]: Start difference. First operand 901 states and 1069 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:26:18,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:18,039 INFO L93 Difference]: Finished difference Result 927 states and 1105 transitions. [2021-11-21 01:26:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 01:26:18,041 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-21 01:26:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:18,046 INFO L225 Difference]: With dead ends: 927 [2021-11-21 01:26:18,047 INFO L226 Difference]: Without dead ends: 923 [2021-11-21 01:26:18,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 449.9s TimeCoverageRelationStatistics Valid=509, Invalid=2550, Unknown=149, NotChecked=452, Total=3660 [2021-11-21 01:26:18,049 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 81 mSDsluCounter, 5066 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 5793 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:18,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 5793 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 01:26:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-21 01:26:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 913. [2021-11-21 01:26:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 630 states have (on average 1.6793650793650794) internal successors, (1058), 906 states have internal predecessors, (1058), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-21 01:26:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1085 transitions. [2021-11-21 01:26:18,073 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1085 transitions. Word has length 79 [2021-11-21 01:26:18,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:18,074 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1085 transitions. [2021-11-21 01:26:18,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:26:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1085 transitions. [2021-11-21 01:26:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-21 01:26:18,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:18,075 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:26:18,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-21 01:26:18,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-21 01:26:18,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-21 01:26:18,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:26:18,691 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-21 01:26:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1000230033, now seen corresponding path program 3 times [2021-11-21 01:26:18,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:26:18,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340292187] [2021-11-21 01:26:18,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:26:18,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:26:18,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:26:18,693 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:26:18,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-21 01:26:19,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 01:26:19,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:26:19,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:26:19,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:26:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:26:20,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:26:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:26:24,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:26:24,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340292187] [2021-11-21 01:26:24,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340292187] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:26:24,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [984156512] [2021-11-21 01:26:24,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:26:24,753 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:26:24,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:26:24,759 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:26:24,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-21 01:26:26,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 01:26:26,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:26:26,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:26:26,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:26:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:26:27,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:26:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:26:27,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [984156512] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:26:27,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564265729] [2021-11-21 01:26:27,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:26:27,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:26:27,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:26:27,963 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:26:27,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a499ec3f-489f-4cef-9c59-a58537739b51/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process