./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 15:04:01,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:04:01,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:04:01,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:04:01,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:04:01,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:04:01,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:04:01,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:04:01,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:04:01,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:04:01,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:04:01,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:04:01,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:04:01,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:04:01,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:04:01,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:04:01,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:04:01,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:04:01,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:04:01,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:04:01,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:04:01,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:04:01,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:04:01,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:04:01,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:04:01,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:04:01,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:04:01,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:04:01,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:04:01,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:04:01,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:04:01,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:04:01,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:04:01,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:04:01,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:04:01,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:04:01,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:04:01,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:04:01,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:04:01,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:04:01,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:04:01,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 15:04:02,007 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:04:02,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:04:02,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:04:02,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:04:02,009 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:04:02,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:04:02,010 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:04:02,010 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:04:02,011 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:04:02,011 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:04:02,011 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:04:02,012 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:04:02,012 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:04:02,012 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:04:02,013 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:04:02,013 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:04:02,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 15:04:02,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 15:04:02,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:04:02,015 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:04:02,015 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 15:04:02,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:04:02,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:04:02,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:04:02,017 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 15:04:02,017 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 15:04:02,017 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 15:04:02,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:04:02,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:04:02,018 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:04:02,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:04:02,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:04:02,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:04:02,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:02,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:04:02,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:04:02,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:04:02,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:04:02,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:04:02,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:04:02,025 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2021-11-19 15:04:02,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:04:02,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:04:02,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:04:02,529 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:04:02,529 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:04:02,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-19 15:04:02,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data/fd21adf01/73a7891953a4444f864e987f8c3f0be7/FLAG784e160ff [2021-11-19 15:04:03,404 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:04:03,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-19 15:04:03,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data/fd21adf01/73a7891953a4444f864e987f8c3f0be7/FLAG784e160ff [2021-11-19 15:04:03,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data/fd21adf01/73a7891953a4444f864e987f8c3f0be7 [2021-11-19 15:04:03,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:04:03,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:04:03,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:03,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:04:03,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:04:03,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:03" (1/1) ... [2021-11-19 15:04:03,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68dcf477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:03, skipping insertion in model container [2021-11-19 15:04:03,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:03" (1/1) ... [2021-11-19 15:04:03,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:04:03,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:04,229 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-19 15:04:04,427 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-19 15:04:04,440 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:04,452 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) [2021-11-19 15:04:04,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@493720fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:04, skipping insertion in model container [2021-11-19 15:04:04,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:04,454 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:04:04,456 INFO L158 Benchmark]: Toolchain (without parser) took 919.63ms. Allocated memory is still 88.1MB. Free memory was 47.5MB in the beginning and 54.2MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 15:04:04,457 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:04:04,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 912.27ms. Allocated memory is still 88.1MB. Free memory was 47.3MB in the beginning and 54.2MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 15:04:04,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 912.27ms. Allocated memory is still 88.1MB. Free memory was 47.3MB in the beginning and 54.2MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 15:04:07,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:04:07,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:04:07,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:04:07,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:04:07,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:04:07,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:04:07,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:04:07,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:04:07,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:04:07,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:04:07,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:04:07,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:04:07,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:04:07,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:04:07,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:04:07,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:04:07,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:04:07,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:04:07,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:04:07,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:04:07,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:04:07,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:04:07,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:04:07,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:04:07,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:04:07,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:04:07,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:04:07,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:04:07,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:04:07,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:04:07,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:04:07,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:04:07,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:04:07,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:04:07,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:04:07,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:04:07,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:04:07,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:04:07,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:04:07,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:04:07,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 15:04:07,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:04:07,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:04:07,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:04:07,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:04:07,448 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:04:07,448 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:04:07,448 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:04:07,448 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:04:07,449 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:04:07,449 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:04:07,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 15:04:07,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 15:04:07,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:04:07,453 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:04:07,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 15:04:07,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:04:07,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:04:07,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:04:07,454 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 15:04:07,454 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 15:04:07,454 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 15:04:07,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:04:07,455 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:04:07,455 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:04:07,455 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:04:07,455 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:04:07,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:04:07,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:04:07,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:04:07,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:04:07,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:07,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:04:07,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:04:07,458 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:04:07,458 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:04:07,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:04:07,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:04:07,459 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2021-11-19 15:04:07,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:04:08,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:04:08,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:04:08,010 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:04:08,011 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:04:08,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-19 15:04:08,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data/1da41beb2/1e7bd0499c4f4571a030b37ef81e5abe/FLAG7b99663dd [2021-11-19 15:04:08,893 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:04:08,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-19 15:04:08,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data/1da41beb2/1e7bd0499c4f4571a030b37ef81e5abe/FLAG7b99663dd [2021-11-19 15:04:09,057 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/data/1da41beb2/1e7bd0499c4f4571a030b37ef81e5abe [2021-11-19 15:04:09,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:04:09,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:04:09,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:09,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:04:09,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:04:09,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:09" (1/1) ... [2021-11-19 15:04:09,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee471ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:09, skipping insertion in model container [2021-11-19 15:04:09,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:09" (1/1) ... [2021-11-19 15:04:09,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:04:09,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:09,938 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-19 15:04:10,150 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-19 15:04:10,174 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:10,192 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:04:10,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:10,260 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-19 15:04:10,429 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-19 15:04:10,433 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:10,441 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:04:10,497 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-19 15:04:10,592 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_a0f4abed-8a26-4cf2-af1d-d714128b4b30/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-19 15:04:10,596 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:10,670 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:04:10,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10 WrapperNode [2021-11-19 15:04:10,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:10,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:04:10,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:04:10,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:04:10,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:10,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:10,862 INFO L137 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 890 [2021-11-19 15:04:10,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:04:10,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:04:10,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:04:10,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:04:10,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:10,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:10,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:10,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:11,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:11,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:11,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:11,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:04:11,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:04:11,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:04:11,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:04:11,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:11,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:11,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:04:11,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:04:11,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:04:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:04:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:04:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:04:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:04:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:04:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 15:04:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:04:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:04:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:04:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:04:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:04:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:04:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:04:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:04:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:04:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:04:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:04:11,479 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:04:11,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:04:11,487 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 15:04:17,100 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:04:17,126 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:04:17,127 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-19 15:04:17,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:17 BoogieIcfgContainer [2021-11-19 15:04:17,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:04:17,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:04:17,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:04:17,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:04:17,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:04:09" (1/3) ... [2021-11-19 15:04:17,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482d0b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:04:17, skipping insertion in model container [2021-11-19 15:04:17,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10" (2/3) ... [2021-11-19 15:04:17,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482d0b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:04:17, skipping insertion in model container [2021-11-19 15:04:17,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:17" (3/3) ... [2021-11-19 15:04:17,150 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-1.i [2021-11-19 15:04:17,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:04:17,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-19 15:04:17,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:04:17,261 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 [2021-11-19 15:04:17,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-19 15:04:17,314 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) [2021-11-19 15:04:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 15:04:17,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:17,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 15:04:17,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:17,330 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-19 15:04:17,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:17,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924357186] [2021-11-19 15:04:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:17,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:17,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:17,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:17,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:04:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:17,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:04:17,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:17,584 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 [2021-11-19 15:04:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:17,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:17,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:17,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924357186] [2021-11-19 15:04:17,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924357186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:17,623 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:17,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:04:17,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931240435] [2021-11-19 15:04:17,627 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:17,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:04:17,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:17,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:04:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:04:17,670 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) [2021-11-19 15:04:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:19,756 INFO L93 Difference]: Finished difference Result 869 states and 925 transitions. [2021-11-19 15:04:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:04:19,759 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 [2021-11-19 15:04:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:19,789 INFO L225 Difference]: With dead ends: 869 [2021-11-19 15:04:19,790 INFO L226 Difference]: Without dead ends: 867 [2021-11-19 15:04:19,792 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 [2021-11-19 15:04:19,797 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 804 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:19,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 582 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 15:04:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-19 15:04:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 866. [2021-11-19 15:04:19,901 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) [2021-11-19 15:04:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 923 transitions. [2021-11-19 15:04:19,909 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 923 transitions. Word has length 3 [2021-11-19 15:04:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:19,909 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 923 transitions. [2021-11-19 15:04:19,910 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) [2021-11-19 15:04:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 923 transitions. [2021-11-19 15:04:19,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 15:04:19,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:19,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 15:04:19,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 15:04:20,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:20,128 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-19 15:04:20,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:20,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837537007] [2021-11-19 15:04:20,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:20,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:20,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:20,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:20,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:04:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:20,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:20,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:20,330 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 [2021-11-19 15:04:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:20,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:20,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:20,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837537007] [2021-11-19 15:04:20,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837537007] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:20,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:20,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 15:04:20,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894700090] [2021-11-19 15:04:20,427 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:20,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:04:20,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:20,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:04:20,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:04:20,433 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) [2021-11-19 15:04:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:25,370 INFO L93 Difference]: Finished difference Result 1160 states and 1251 transitions. [2021-11-19 15:04:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:25,371 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 [2021-11-19 15:04:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:25,380 INFO L225 Difference]: With dead ends: 1160 [2021-11-19 15:04:25,381 INFO L226 Difference]: Without dead ends: 1160 [2021-11-19 15:04:25,381 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 [2021-11-19 15:04:25,383 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 767 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:25,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 1382 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 15:04:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-11-19 15:04:25,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 901. [2021-11-19 15:04:25,428 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) [2021-11-19 15:04:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1002 transitions. [2021-11-19 15:04:25,435 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1002 transitions. Word has length 3 [2021-11-19 15:04:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:25,436 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1002 transitions. [2021-11-19 15:04:25,436 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) [2021-11-19 15:04:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1002 transitions. [2021-11-19 15:04:25,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:04:25,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:25,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:25,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:25,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:25,656 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-19 15:04:25,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:25,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917100879] [2021-11-19 15:04:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:25,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:25,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:25,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:25,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:04:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:25,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:04:25,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:25,845 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 [2021-11-19 15:04:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:25,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:25,932 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:25,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917100879] [2021-11-19 15:04:25,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917100879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:25,933 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:25,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:04:25,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852667150] [2021-11-19 15:04:25,934 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:25,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:04:25,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:04:25,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:04:25,936 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) [2021-11-19 15:04:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:28,093 INFO L93 Difference]: Finished difference Result 1078 states and 1206 transitions. [2021-11-19 15:04:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:04:28,096 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 [2021-11-19 15:04:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:28,104 INFO L225 Difference]: With dead ends: 1078 [2021-11-19 15:04:28,104 INFO L226 Difference]: Without dead ends: 1078 [2021-11-19 15:04:28,105 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 [2021-11-19 15:04:28,106 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 816 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:28,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 874 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:04:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-19 15:04:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 854. [2021-11-19 15:04:28,138 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) [2021-11-19 15:04:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 952 transitions. [2021-11-19 15:04:28,144 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 952 transitions. Word has length 8 [2021-11-19 15:04:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:28,144 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 952 transitions. [2021-11-19 15:04:28,145 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) [2021-11-19 15:04:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 952 transitions. [2021-11-19 15:04:28,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:04:28,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:28,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:28,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:28,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:28,360 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:28,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:28,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-19 15:04:28,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:28,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640584495] [2021-11-19 15:04:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:28,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:28,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:28,363 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:28,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:04:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:28,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:28,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:28,527 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 [2021-11-19 15:04:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:28,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:28,706 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:28,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640584495] [2021-11-19 15:04:28,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640584495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:28,707 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:28,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 15:04:28,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393049056] [2021-11-19 15:04:28,707 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:28,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:04:28,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:04:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:04:28,708 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) [2021-11-19 15:04:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:33,459 INFO L93 Difference]: Finished difference Result 1110 states and 1201 transitions. [2021-11-19 15:04:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:33,461 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 [2021-11-19 15:04:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:33,471 INFO L225 Difference]: With dead ends: 1110 [2021-11-19 15:04:33,471 INFO L226 Difference]: Without dead ends: 1110 [2021-11-19 15:04:33,472 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 [2021-11-19 15:04:33,473 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 544 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:33,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1523 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 15:04:33,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-19 15:04:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 844. [2021-11-19 15:04:33,516 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) [2021-11-19 15:04:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 939 transitions. [2021-11-19 15:04:33,523 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 939 transitions. Word has length 8 [2021-11-19 15:04:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:33,523 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 939 transitions. [2021-11-19 15:04:33,523 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) [2021-11-19 15:04:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 939 transitions. [2021-11-19 15:04:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 15:04:33,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:33,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:33,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:33,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:33,739 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)] === [2021-11-19 15:04:33,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2106311903, now seen corresponding path program 1 times [2021-11-19 15:04:33,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:33,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237300969] [2021-11-19 15:04:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:33,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:33,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:33,742 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:33,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:04:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:33,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:33,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:33,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:04:33,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:04:33,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:04:34,025 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 15:04:34,026 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 [2021-11-19 15:04:34,111 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 15:04:34,112 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 [2021-11-19 15:04:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:34,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:34,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:34,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237300969] [2021-11-19 15:04:34,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237300969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:34,228 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:34,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:04:34,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753631226] [2021-11-19 15:04:34,229 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:34,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:04:34,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:34,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:04:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:04:34,231 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) [2021-11-19 15:04:36,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:36,580 INFO L93 Difference]: Finished difference Result 1061 states and 1185 transitions. [2021-11-19 15:04:36,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:36,581 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 [2021-11-19 15:04:36,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:36,590 INFO L225 Difference]: With dead ends: 1061 [2021-11-19 15:04:36,590 INFO L226 Difference]: Without dead ends: 1061 [2021-11-19 15:04:36,591 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 [2021-11-19 15:04:36,592 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 237 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:36,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 3042 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:04:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2021-11-19 15:04:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 844. [2021-11-19 15:04:36,631 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) [2021-11-19 15:04:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 938 transitions. [2021-11-19 15:04:36,637 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 938 transitions. Word has length 10 [2021-11-19 15:04:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:36,637 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 938 transitions. [2021-11-19 15:04:36,638 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) [2021-11-19 15:04:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 938 transitions. [2021-11-19 15:04:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 15:04:36,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:36,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:36,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:36,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:36,855 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:36,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:36,856 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-19 15:04:36,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:36,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559196998] [2021-11-19 15:04:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:36,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:36,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:36,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:36,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:04:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:37,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:04:37,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:37,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:37,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:37,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559196998] [2021-11-19 15:04:37,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559196998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:37,154 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:37,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:04:37,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149577656] [2021-11-19 15:04:37,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:37,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:04:37,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:04:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:04:37,156 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) [2021-11-19 15:04:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:37,239 INFO L93 Difference]: Finished difference Result 811 states and 904 transitions. [2021-11-19 15:04:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:04:37,240 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 [2021-11-19 15:04:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:37,246 INFO L225 Difference]: With dead ends: 811 [2021-11-19 15:04:37,247 INFO L226 Difference]: Without dead ends: 811 [2021-11-19 15:04:37,247 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 [2021-11-19 15:04:37,250 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:37,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:04:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-11-19 15:04:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 802. [2021-11-19 15:04:37,275 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) [2021-11-19 15:04:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 895 transitions. [2021-11-19 15:04:37,281 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 895 transitions. Word has length 18 [2021-11-19 15:04:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:37,281 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 895 transitions. [2021-11-19 15:04:37,281 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) [2021-11-19 15:04:37,282 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 895 transitions. [2021-11-19 15:04:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 15:04:37,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:37,283 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] [2021-11-19 15:04:37,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:37,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:37,499 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:37,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:37,499 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-19 15:04:37,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:37,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845108897] [2021-11-19 15:04:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:37,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:37,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:37,505 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:37,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:04:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:37,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:37,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:37,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:37,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:37,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845108897] [2021-11-19 15:04:37,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845108897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:37,816 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:37,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:04:37,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379174245] [2021-11-19 15:04:37,817 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:37,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:04:37,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:37,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:04:37,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:04:37,821 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) [2021-11-19 15:04:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:37,954 INFO L93 Difference]: Finished difference Result 790 states and 876 transitions. [2021-11-19 15:04:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:37,955 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 [2021-11-19 15:04:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:37,961 INFO L225 Difference]: With dead ends: 790 [2021-11-19 15:04:37,961 INFO L226 Difference]: Without dead ends: 790 [2021-11-19 15:04:37,961 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 [2021-11-19 15:04:37,963 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 [2021-11-19 15:04:37,963 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] [2021-11-19 15:04:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-19 15:04:37,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 780. [2021-11-19 15:04:37,986 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) [2021-11-19 15:04:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 866 transitions. [2021-11-19 15:04:37,991 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 866 transitions. Word has length 20 [2021-11-19 15:04:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:37,992 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 866 transitions. [2021-11-19 15:04:37,992 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) [2021-11-19 15:04:37,992 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 866 transitions. [2021-11-19 15:04:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 15:04:37,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:37,994 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] [2021-11-19 15:04:38,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:38,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:38,208 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-19 15:04:38,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:38,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185774163] [2021-11-19 15:04:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:38,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:38,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:38,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:38,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:04:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:38,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:38,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:38,438 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 [2021-11-19 15:04:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:38,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:38,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:38,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185774163] [2021-11-19 15:04:38,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185774163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:38,757 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:38,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:04:38,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760695829] [2021-11-19 15:04:38,758 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:38,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:04:38,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:04:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:04:38,759 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) [2021-11-19 15:04:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:41,121 INFO L93 Difference]: Finished difference Result 1012 states and 1128 transitions. [2021-11-19 15:04:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:41,122 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 [2021-11-19 15:04:41,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:41,129 INFO L225 Difference]: With dead ends: 1012 [2021-11-19 15:04:41,129 INFO L226 Difference]: Without dead ends: 1012 [2021-11-19 15:04:41,130 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 [2021-11-19 15:04:41,131 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1362 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:41,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 786 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:04:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-11-19 15:04:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 776. [2021-11-19 15:04:41,154 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) [2021-11-19 15:04:41,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 862 transitions. [2021-11-19 15:04:41,159 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 862 transitions. Word has length 34 [2021-11-19 15:04:41,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:41,160 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 862 transitions. [2021-11-19 15:04:41,160 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) [2021-11-19 15:04:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 862 transitions. [2021-11-19 15:04:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 15:04:41,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:41,162 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] [2021-11-19 15:04:41,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:41,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:41,376 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-19 15:04:41,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:41,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104969013] [2021-11-19 15:04:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:41,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:41,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:41,381 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:41,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:04:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:41,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:04:41,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:41,602 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 [2021-11-19 15:04:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:41,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:42,597 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:42,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104969013] [2021-11-19 15:04:42,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104969013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:42,597 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:42,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:04:42,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100646979] [2021-11-19 15:04:42,598 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:42,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:04:42,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:04:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:04:42,599 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) [2021-11-19 15:04:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:49,344 INFO L93 Difference]: Finished difference Result 1050 states and 1132 transitions. [2021-11-19 15:04:49,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:04:49,345 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 [2021-11-19 15:04:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:49,352 INFO L225 Difference]: With dead ends: 1050 [2021-11-19 15:04:49,353 INFO L226 Difference]: Without dead ends: 1050 [2021-11-19 15:04:49,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:04:49,354 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1702 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s 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, 6.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:49,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 1248 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-19 15:04:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-11-19 15:04:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 772. [2021-11-19 15:04:49,378 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) [2021-11-19 15:04:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 858 transitions. [2021-11-19 15:04:49,383 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 858 transitions. Word has length 34 [2021-11-19 15:04:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:49,384 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 858 transitions. [2021-11-19 15:04:49,384 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) [2021-11-19 15:04:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 858 transitions. [2021-11-19 15:04:49,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-19 15:04:49,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:49,387 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] [2021-11-19 15:04:49,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-19 15:04:49,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:49,602 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2021-11-19 15:04:49,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:49,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700424463] [2021-11-19 15:04:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:49,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:49,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:49,606 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:49,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:04:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:49,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:49,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:49,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:50,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:50,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700424463] [2021-11-19 15:04:50,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700424463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:50,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:50,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:04:50,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721364786] [2021-11-19 15:04:50,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:50,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:04:50,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:04:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:04:50,141 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) [2021-11-19 15:04:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:50,224 INFO L93 Difference]: Finished difference Result 775 states and 857 transitions. [2021-11-19 15:04:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:50,224 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 [2021-11-19 15:04:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:50,230 INFO L225 Difference]: With dead ends: 775 [2021-11-19 15:04:50,231 INFO L226 Difference]: Without dead ends: 775 [2021-11-19 15:04:50,231 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 [2021-11-19 15:04:50,232 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:50,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1531 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:04:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-19 15:04:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 766. [2021-11-19 15:04:50,252 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) [2021-11-19 15:04:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 848 transitions. [2021-11-19 15:04:50,256 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 848 transitions. Word has length 49 [2021-11-19 15:04:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:50,256 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 848 transitions. [2021-11-19 15:04:50,256 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) [2021-11-19 15:04:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 848 transitions. [2021-11-19 15:04:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 15:04:50,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:50,265 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] [2021-11-19 15:04:50,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:50,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:50,483 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:50,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2021-11-19 15:04:50,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:50,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677197833] [2021-11-19 15:04:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:50,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:50,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:50,486 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:50,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:04:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:50,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:50,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:51,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:51,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:51,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677197833] [2021-11-19 15:04:51,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677197833] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:51,757 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:51,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:04:51,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391455112] [2021-11-19 15:04:51,757 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:51,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:04:51,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:51,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:04:51,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:04:51,759 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) [2021-11-19 15:04:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:51,901 INFO L93 Difference]: Finished difference Result 966 states and 1070 transitions. [2021-11-19 15:04:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:04:51,901 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 [2021-11-19 15:04:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:51,906 INFO L225 Difference]: With dead ends: 966 [2021-11-19 15:04:51,907 INFO L226 Difference]: Without dead ends: 966 [2021-11-19 15:04:51,907 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 [2021-11-19 15:04:51,908 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 [2021-11-19 15:04:51,908 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] [2021-11-19 15:04:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-19 15:04:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 911. [2021-11-19 15:04:51,931 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) [2021-11-19 15:04:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1067 transitions. [2021-11-19 15:04:51,936 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1067 transitions. Word has length 57 [2021-11-19 15:04:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:51,937 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1067 transitions. [2021-11-19 15:04:51,937 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) [2021-11-19 15:04:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1067 transitions. [2021-11-19 15:04:51,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 15:04:51,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:51,939 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] [2021-11-19 15:04:51,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:52,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:52,154 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:04:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-19 15:04:52,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:52,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825587686] [2021-11-19 15:04:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:52,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:52,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:52,156 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:52,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:04:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:52,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:04:52,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:52,532 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 [2021-11-19 15:04:52,542 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 [2021-11-19 15:04:53,366 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 15:04:53,366 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 [2021-11-19 15:04:53,375 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:04:53,375 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 [2021-11-19 15:04:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:53,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:59,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:59,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825587686] [2021-11-19 15:04:59,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825587686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:59,110 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:59,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:04:59,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609088058] [2021-11-19 15:04:59,111 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:59,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:04:59,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:59,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:04:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 15:04:59,114 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) [2021-11-19 15:05:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:04,201 INFO L93 Difference]: Finished difference Result 1391 states and 1625 transitions. [2021-11-19 15:05:04,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:05:04,202 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 [2021-11-19 15:05:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:04,210 INFO L225 Difference]: With dead ends: 1391 [2021-11-19 15:05:04,210 INFO L226 Difference]: Without dead ends: 1391 [2021-11-19 15:05:04,210 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 [2021-11-19 15:05:04,211 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1150 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s 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, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:04,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 1535 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1119 Invalid, 0 Unknown, 1127 Unchecked, 5.0s Time] [2021-11-19 15:05:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2021-11-19 15:05:04,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 889. [2021-11-19 15:05:04,237 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) [2021-11-19 15:05:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1053 transitions. [2021-11-19 15:05:04,242 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1053 transitions. Word has length 60 [2021-11-19 15:05:04,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:04,243 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1053 transitions. [2021-11-19 15:05:04,243 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) [2021-11-19 15:05:04,243 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1053 transitions. [2021-11-19 15:05:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 15:05:04,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:04,245 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] [2021-11-19 15:05:04,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:04,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:04,459 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:05:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:04,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-19 15:05:04,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:04,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235729338] [2021-11-19 15:05:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:04,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:04,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:04,461 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:04,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:05:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:04,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:05:04,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:05,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:05,127 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 [2021-11-19 15:05:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:05,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:05,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235729338] [2021-11-19 15:05:05,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235729338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:05,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:05,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:05:05,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486273392] [2021-11-19 15:05:05,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:05,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:05:05,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:05:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:05:05,586 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) [2021-11-19 15:05:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:07,480 INFO L93 Difference]: Finished difference Result 887 states and 1051 transitions. [2021-11-19 15:05:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:05:07,481 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 [2021-11-19 15:05:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:07,486 INFO L225 Difference]: With dead ends: 887 [2021-11-19 15:05:07,487 INFO L226 Difference]: Without dead ends: 887 [2021-11-19 15:05:07,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:05:07,488 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 706 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:07,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 454 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 15:05:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-19 15:05:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2021-11-19 15:05:07,508 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) [2021-11-19 15:05:07,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1051 transitions. [2021-11-19 15:05:07,513 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1051 transitions. Word has length 62 [2021-11-19 15:05:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:07,514 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1051 transitions. [2021-11-19 15:05:07,514 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) [2021-11-19 15:05:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1051 transitions. [2021-11-19 15:05:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 15:05:07,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:07,516 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] [2021-11-19 15:05:07,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-19 15:05:07,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:07,733 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:05:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:07,734 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-19 15:05:07,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:07,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233062852] [2021-11-19 15:05:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:07,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:07,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:07,736 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:07,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:05:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:08,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:05:08,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:08,173 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 [2021-11-19 15:05:08,191 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 [2021-11-19 15:05:08,239 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 [2021-11-19 15:05:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:08,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:08,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:08,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233062852] [2021-11-19 15:05:08,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233062852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:08,418 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:08,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:05:08,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396120097] [2021-11-19 15:05:08,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:08,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:05:08,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:08,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:05:08,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:05:08,420 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) [2021-11-19 15:05:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:11,057 INFO L93 Difference]: Finished difference Result 886 states and 1050 transitions. [2021-11-19 15:05:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:05:11,058 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 [2021-11-19 15:05:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:11,063 INFO L225 Difference]: With dead ends: 886 [2021-11-19 15:05:11,063 INFO L226 Difference]: Without dead ends: 886 [2021-11-19 15:05:11,064 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 [2021-11-19 15:05:11,064 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 4 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:11,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1889 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 15:05:11,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-11-19 15:05:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 886. [2021-11-19 15:05:11,081 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) [2021-11-19 15:05:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1050 transitions. [2021-11-19 15:05:11,086 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1050 transitions. Word has length 65 [2021-11-19 15:05:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:11,086 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1050 transitions. [2021-11-19 15:05:11,087 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) [2021-11-19 15:05:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1050 transitions. [2021-11-19 15:05:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 15:05:11,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:11,088 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] [2021-11-19 15:05:11,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:11,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:11,305 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:05:11,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:11,305 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-19 15:05:11,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:11,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395973589] [2021-11-19 15:05:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:11,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:11,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:11,307 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:11,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:05:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:11,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:05:11,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:11,720 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 [2021-11-19 15:05:11,753 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 [2021-11-19 15:05:11,766 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 [2021-11-19 15:05:11,848 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 [2021-11-19 15:05:11,853 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 [2021-11-19 15:05:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:11,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:12,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:12,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395973589] [2021-11-19 15:05:12,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395973589] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:12,263 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:12,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 15:05:12,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773980407] [2021-11-19 15:05:12,263 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:12,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:05:12,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:05:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:05:12,265 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) [2021-11-19 15:05:20,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:20,828 INFO L93 Difference]: Finished difference Result 885 states and 1049 transitions. [2021-11-19 15:05:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:05:20,830 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 [2021-11-19 15:05:20,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:20,835 INFO L225 Difference]: With dead ends: 885 [2021-11-19 15:05:20,836 INFO L226 Difference]: Without dead ends: 885 [2021-11-19 15:05:20,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:05:20,837 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s 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, 8.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:20,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2675 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-11-19 15:05:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-11-19 15:05:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2021-11-19 15:05:20,855 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) [2021-11-19 15:05:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1049 transitions. [2021-11-19 15:05:20,860 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1049 transitions. Word has length 65 [2021-11-19 15:05:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:20,861 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1049 transitions. [2021-11-19 15:05:20,861 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) [2021-11-19 15:05:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1049 transitions. [2021-11-19 15:05:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 15:05:20,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:20,862 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] [2021-11-19 15:05:20,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:21,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:21,084 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:05:21,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:21,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1478911951, now seen corresponding path program 1 times [2021-11-19 15:05:21,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:21,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625560601] [2021-11-19 15:05:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:21,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:21,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:21,087 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:21,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:05:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:21,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:05:21,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:21,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:21,758 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:21,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625560601] [2021-11-19 15:05:21,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625560601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:21,759 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:21,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:05:21,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112405859] [2021-11-19 15:05:21,759 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:21,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:05:21,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:05:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:05:21,761 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) [2021-11-19 15:05:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:21,869 INFO L93 Difference]: Finished difference Result 895 states and 1062 transitions. [2021-11-19 15:05:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:05:21,870 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 [2021-11-19 15:05:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:21,878 INFO L225 Difference]: With dead ends: 895 [2021-11-19 15:05:21,878 INFO L226 Difference]: Without dead ends: 895 [2021-11-19 15:05:21,879 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 [2021-11-19 15:05:21,880 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 [2021-11-19 15:05:21,880 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] [2021-11-19 15:05:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-19 15:05:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-11-19 15:05:21,905 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) [2021-11-19 15:05:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1062 transitions. [2021-11-19 15:05:21,909 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1062 transitions. Word has length 73 [2021-11-19 15:05:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:21,910 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1062 transitions. [2021-11-19 15:05:21,910 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) [2021-11-19 15:05:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1062 transitions. [2021-11-19 15:05:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 15:05:21,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:21,912 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] [2021-11-19 15:05:21,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:22,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:22,126 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:05:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:22,127 INFO L85 PathProgramCache]: Analyzing trace with hash 165650223, now seen corresponding path program 1 times [2021-11-19 15:05:22,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:22,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488557226] [2021-11-19 15:05:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:22,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:22,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:22,129 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:22,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:05:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:22,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:05:22,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:22,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:22,891 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:22,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488557226] [2021-11-19 15:05:22,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488557226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:22,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [591224988] [2021-11-19 15:05:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:22,892 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:22,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:05:22,894 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:05:22,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 15:05:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:23,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:05:23,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:23,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:23,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [591224988] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:23,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866526351] [2021-11-19 15:05:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:23,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:05:23,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:05:23,588 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:05:23,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 15:05:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:23,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:05:23,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:24,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:24,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866526351] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:24,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:05:24,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 15:05:24,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126237934] [2021-11-19 15:05:24,319 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:05:24,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:05:24,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:24,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:05:24,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:05:24,321 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) [2021-11-19 15:05:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:24,876 INFO L93 Difference]: Finished difference Result 909 states and 1079 transitions. [2021-11-19 15:05:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 15:05:24,877 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 [2021-11-19 15:05:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:24,884 INFO L225 Difference]: With dead ends: 909 [2021-11-19 15:05:24,884 INFO L226 Difference]: Without dead ends: 903 [2021-11-19 15:05:24,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:05:24,886 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, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:24,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 4318 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:05:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-11-19 15:05:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 901. [2021-11-19 15:05:24,908 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) [2021-11-19 15:05:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1069 transitions. [2021-11-19 15:05:24,912 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1069 transitions. Word has length 75 [2021-11-19 15:05:24,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:24,913 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1069 transitions. [2021-11-19 15:05:24,913 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) [2021-11-19 15:05:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1069 transitions. [2021-11-19 15:05:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 15:05:24,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:24,915 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] [2021-11-19 15:05:24,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:25,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:25,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:25,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:25,543 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:05:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:25,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1807156719, now seen corresponding path program 2 times [2021-11-19 15:05:25,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:25,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121718601] [2021-11-19 15:05:25,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:05:25,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:25,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:25,547 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:25,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:05:26,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:05:26,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:05:26,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:05:26,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:26,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:26,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:26,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121718601] [2021-11-19 15:05:26,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121718601] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:26,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [50484705] [2021-11-19 15:05:26,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:05:26,915 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:26,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:05:26,916 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:05:26,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 15:05:27,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:05:27,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:05:27,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:05:27,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:28,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:05:28,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [50484705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:28,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715003032] [2021-11-19 15:05:28,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:05:28,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:05:28,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:05:28,351 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:05:28,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 15:06:07,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:06:07,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:06:07,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 15:06:07,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:07,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:06:08,263 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 15:06:08,263 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 [2021-11-19 15:06:08,289 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 [2021-11-19 15:06:08,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-19 15:06:08,398 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 [2021-11-19 15:06:08,687 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 [2021-11-19 15:06:08,694 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 [2021-11-19 15:08:26,652 WARN L227 SmtUtils]: Spent 27.13s 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) [2021-11-19 15:08:26,653 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 15:08:26,654 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 [2021-11-19 15:08:37,822 WARN L227 SmtUtils]: Spent 11.15s 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) [2021-11-19 15:08:37,823 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-19 15:08:37,823 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 [2021-11-19 15:08:43,373 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 15:08:43,373 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 [2021-11-19 15:08:43,399 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 15:08:43,399 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 [2021-11-19 15:08:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:08:55,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:13,862 WARN L227 SmtUtils]: Spent 17.65s 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) [2021-11-19 15:10:38,161 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 [2021-11-19 15:13:10,253 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 [2021-11-19 15:15:00,553 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 [2021-11-19 15:15:55,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 15:15:55,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 15:15:55,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-19 15:15:55,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433083313] [2021-11-19 15:15:55,948 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 15:15:55,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 15:15:55,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:15:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 15:15:55,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1167, Unknown=160, NotChecked=228, Total=1722 [2021-11-19 15:15:55,951 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) [2021-11-19 15:17:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:17:11,863 INFO L93 Difference]: Finished difference Result 927 states and 1105 transitions. [2021-11-19 15:17:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 15:17:11,865 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 [2021-11-19 15:17:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:17:11,871 INFO L225 Difference]: With dead ends: 927 [2021-11-19 15:17:11,872 INFO L226 Difference]: Without dead ends: 923 [2021-11-19 15:17:11,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 548.7s TimeCoverageRelationStatistics Valid=508, Invalid=2627, Unknown=183, NotChecked=342, Total=3660 [2021-11-19 15:17:11,875 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 81 mSDsluCounter, 5066 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:17:11,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 5793 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:17:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-19 15:17:11,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 913. [2021-11-19 15:17:11,896 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) [2021-11-19 15:17:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1085 transitions. [2021-11-19 15:17:11,899 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1085 transitions. Word has length 79 [2021-11-19 15:17:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:17:11,900 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1085 transitions. [2021-11-19 15:17:11,900 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) [2021-11-19 15:17:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1085 transitions. [2021-11-19 15:17:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 15:17:11,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:17:11,902 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] [2021-11-19 15:17:11,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-19 15:17:12,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-19 15:17:12,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 15:17:12,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:17:12,511 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 15:17:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:17:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1000230033, now seen corresponding path program 3 times [2021-11-19 15:17:12,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:17:12,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644029797] [2021-11-19 15:17:12,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:17:12,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:17:12,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:17:12,514 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:17:12,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 15:17:13,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 15:17:13,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:17:13,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:17:13,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:17:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:17:13,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:17:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:17:15,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:17:15,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644029797] [2021-11-19 15:17:15,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644029797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:17:15,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [862256437] [2021-11-19 15:17:15,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:17:15,932 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:17:15,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:17:15,935 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:17:15,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 15:17:18,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 15:17:18,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:17:18,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:17:18,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:17:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:17:18,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:17:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:17:18,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [862256437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:17:18,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247040217] [2021-11-19 15:17:18,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:17:18,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:17:18,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:17:18,943 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:17:18,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f4abed-8a26-4cf2-af1d-d714128b4b30/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process