./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a97724240a87192496d8328468f54cf5b25ba6881d4dae32505036169c4a273 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:49:30,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:49:30,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:49:30,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:49:30,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:49:30,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:49:30,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:49:30,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:49:30,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:49:30,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:49:30,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:49:30,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:49:30,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:49:30,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:49:30,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:49:30,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:49:30,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:49:30,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:49:30,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:49:30,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:49:30,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:49:30,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:49:30,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:49:30,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:49:30,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:49:30,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:49:30,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:49:30,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:49:30,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:49:30,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:49:30,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:49:30,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:49:30,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:49:30,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:49:30,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:49:30,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:49:30,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:49:30,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:49:30,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:49:30,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:49:30,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:49:30,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 10:49:31,052 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:49:31,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:49:31,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:49:31,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:49:31,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:49:31,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:49:31,065 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:49:31,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:49:31,066 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:49:31,066 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:49:31,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:49:31,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:49:31,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:49:31,069 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:49:31,069 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:49:31,069 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:49:31,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:49:31,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:49:31,070 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:49:31,070 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:49:31,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:49:31,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:49:31,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:49:31,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:49:31,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:49:31,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:49:31,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:49:31,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:49:31,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:49:31,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a97724240a87192496d8328468f54cf5b25ba6881d4dae32505036169c4a273 [2021-11-09 10:49:31,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:49:31,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:49:31,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:49:31,455 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:49:31,456 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:49:31,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i [2021-11-09 10:49:31,541 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data/3fc52d359/edf0470c94e34814a73dde2e3ab648c6/FLAG1cd6ea43d [2021-11-09 10:49:32,334 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:49:32,335 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i [2021-11-09 10:49:32,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data/3fc52d359/edf0470c94e34814a73dde2e3ab648c6/FLAG1cd6ea43d [2021-11-09 10:49:32,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data/3fc52d359/edf0470c94e34814a73dde2e3ab648c6 [2021-11-09 10:49:32,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:49:32,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:49:32,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:49:32,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:49:32,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:49:32,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:49:32" (1/1) ... [2021-11-09 10:49:32,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46399afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:32, skipping insertion in model container [2021-11-09 10:49:32,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:49:32" (1/1) ... [2021-11-09 10:49:32,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:49:32,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:49:33,271 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i[33021,33034] [2021-11-09 10:49:33,489 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i[49681,49694] [2021-11-09 10:49:33,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:49:33,517 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) [2021-11-09 10:49:33,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a93549f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:33, skipping insertion in model container [2021-11-09 10:49:33,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:49:33,519 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 10:49:33,521 INFO L168 Benchmark]: Toolchain (without parser) took 1030.02 ms. Allocated memory is still 119.5 MB. Free memory was 79.5 MB in the beginning and 80.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:49:33,522 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 119.5 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:49:33,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1024.41 ms. Allocated memory is still 119.5 MB. Free memory was 79.3 MB in the beginning and 80.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:49:33,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 119.5 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1024.41 ms. Allocated memory is still 119.5 MB. Free memory was 79.3 MB in the beginning and 80.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a97724240a87192496d8328468f54cf5b25ba6881d4dae32505036169c4a273 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:49:36,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:49:36,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:49:36,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:49:36,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:49:36,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:49:36,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:49:36,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:49:36,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:49:36,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:49:36,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:49:36,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:49:36,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:49:36,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:49:36,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:49:36,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:49:36,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:49:36,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:49:36,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:49:36,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:49:36,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:49:36,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:49:36,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:49:36,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:49:36,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:49:36,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:49:36,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:49:36,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:49:36,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:49:36,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:49:36,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:49:36,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:49:36,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:49:36,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:49:36,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:49:36,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:49:36,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:49:36,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:49:36,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:49:36,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:49:36,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:49:36,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 10:49:36,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:49:36,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:49:36,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:49:36,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:49:36,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:49:36,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:49:36,439 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:49:36,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:49:36,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:49:36,440 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:49:36,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:49:36,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:49:36,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:49:36,443 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:49:36,443 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:49:36,443 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:49:36,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:49:36,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:49:36,444 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:49:36,444 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:49:36,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:49:36,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:49:36,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:49:36,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:49:36,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:49:36,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:49:36,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:49:36,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:49:36,447 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:49:36,448 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:49:36,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:49:36,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:49:36,449 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_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a97724240a87192496d8328468f54cf5b25ba6881d4dae32505036169c4a273 [2021-11-09 10:49:36,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:49:36,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:49:36,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:49:36,948 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:49:36,949 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:49:36,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i [2021-11-09 10:49:37,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data/964eef7d2/bd195e11f58f452eb3a5c7bd18b2ddba/FLAGccd038dec [2021-11-09 10:49:37,978 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:49:37,978 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i [2021-11-09 10:49:38,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data/964eef7d2/bd195e11f58f452eb3a5c7bd18b2ddba/FLAGccd038dec [2021-11-09 10:49:38,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/data/964eef7d2/bd195e11f58f452eb3a5c7bd18b2ddba [2021-11-09 10:49:38,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:49:38,090 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:49:38,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:49:38,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:49:38,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:49:38,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:49:38" (1/1) ... [2021-11-09 10:49:38,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d30a290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:38, skipping insertion in model container [2021-11-09 10:49:38,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:49:38" (1/1) ... [2021-11-09 10:49:38,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:49:38,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:49:38,864 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i[33021,33034] [2021-11-09 10:49:39,159 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i[49681,49694] [2021-11-09 10:49:39,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:49:39,205 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 10:49:39,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:49:39,271 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i[33021,33034] [2021-11-09 10:49:39,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i[49681,49694] [2021-11-09 10:49:39,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:49:39,482 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:49:39,540 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i[33021,33034] [2021-11-09 10:49:39,667 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i[49681,49694] [2021-11-09 10:49:39,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:49:39,743 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:49:39,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39 WrapperNode [2021-11-09 10:49:39,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:49:39,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:49:39,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:49:39,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:49:39,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39" (1/1) ... [2021-11-09 10:49:39,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39" (1/1) ... [2021-11-09 10:49:39,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39" (1/1) ... [2021-11-09 10:49:39,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39" (1/1) ... [2021-11-09 10:49:39,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39" (1/1) ... [2021-11-09 10:49:39,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39" (1/1) ... [2021-11-09 10:49:40,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39" (1/1) ... [2021-11-09 10:49:40,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:49:40,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:49:40,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:49:40,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:49:40,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39" (1/1) ... [2021-11-09 10:49:40,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:49:40,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:49:40,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:49:40,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:49:40,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 10:49:40,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:49:40,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:49:40,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 10:49:40,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 10:49:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 10:49:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 10:49:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 10:49:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 10:49:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 10:49:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-09 10:49:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 10:49:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 10:49:40,167 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 10:49:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 10:49:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 10:49:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 10:49:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 10:49:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 10:49:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 10:49:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 10:49:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 10:49:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 10:49:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 10:49:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 10:49:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 10:49:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 10:49:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 10:49:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 10:49:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 10:49:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 10:49:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 10:49:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 10:49:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 10:49:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 10:49:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 10:49:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 10:49:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 10:49:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 10:49:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 10:49:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 10:49:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 10:49:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 10:49:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 10:49:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 10:49:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 10:49:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 10:49:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 10:49:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 10:49:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 10:49:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 10:49:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 10:49:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 10:49:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 10:49:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 10:49:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 10:49:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 10:49:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 10:49:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 10:49:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 10:49:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 10:49:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 10:49:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 10:49:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 10:49:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 10:49:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 10:49:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 10:49:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 10:49:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 10:49:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 10:49:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 10:49:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 10:49:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 10:49:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 10:49:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 10:49:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 10:49:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 10:49:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 10:49:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 10:49:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 10:49:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 10:49:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 10:49:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 10:49:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 10:49:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 10:49:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 10:49:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 10:49:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 10:49:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 10:49:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 10:49:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 10:49:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 10:49:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 10:49:40,190 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 10:49:40,190 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 10:49:40,190 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 10:49:40,190 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 10:49:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 10:49:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 10:49:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 10:49:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 10:49:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 10:49:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 10:49:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 10:49:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 10:49:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 10:49:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 10:49:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 10:49:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 10:49:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 10:49:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 10:49:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 10:49:40,194 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 10:49:40,194 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 10:49:40,194 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 10:49:40,195 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 10:49:40,195 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 10:49:40,196 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 10:49:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 10:49:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 10:49:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 10:49:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 10:49:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 10:49:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 10:49:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 10:49:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 10:49:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 10:49:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 10:49:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 10:49:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 10:49:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 10:49:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 10:49:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 10:49:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 10:49:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 10:49:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 10:49:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 10:49:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 10:49:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 10:49:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 10:49:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 10:49:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 10:49:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 10:49:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 10:49:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 10:49:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 10:49:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 10:49:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 10:49:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 10:49:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 10:49:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 10:49:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 10:49:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 10:49:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 10:49:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 10:49:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 10:49:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 10:49:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 10:49:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 10:49:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 10:49:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 10:49:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 10:49:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 10:49:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 10:49:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 10:49:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 10:49:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 10:49:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 10:49:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 10:49:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 10:49:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 10:49:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 10:49:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 10:49:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 10:49:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 10:49:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:49:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 10:49:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-09 10:49:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 10:49:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:49:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 10:49:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 10:49:40,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:49:40,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:49:40,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 10:49:40,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:49:40,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 10:49:40,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 10:49:40,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:49:40,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:49:40,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:49:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 10:49:40,938 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 10:49:48,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:49:48,138 INFO L299 CfgBuilder]: Removed 83 assume(true) statements. [2021-11-09 10:49:48,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:49:48 BoogieIcfgContainer [2021-11-09 10:49:48,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:49:48,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:49:48,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:49:48,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:49:48,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:49:38" (1/3) ... [2021-11-09 10:49:48,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586d7576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:49:48, skipping insertion in model container [2021-11-09 10:49:48,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:39" (2/3) ... [2021-11-09 10:49:48,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586d7576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:49:48, skipping insertion in model container [2021-11-09 10:49:48,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:49:48" (3/3) ... [2021-11-09 10:49:48,159 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-1.i [2021-11-09 10:49:48,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:49:48,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 729 error locations. [2021-11-09 10:49:48,241 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:49:48,259 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 [2021-11-09 10:49:48,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 729 error locations. [2021-11-09 10:49:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 1464 states, 721 states have (on average 2.234396671289875) internal successors, (1611), 1449 states have internal predecessors, (1611), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-09 10:49:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 10:49:48,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:49:48,368 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:49:48,369 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:49:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:48,375 INFO L85 PathProgramCache]: Analyzing trace with hash 477995229, now seen corresponding path program 1 times [2021-11-09 10:49:48,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:49:48,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996401832] [2021-11-09 10:49:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:48,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:49:48,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:49:48,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:49:48,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:49:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:48,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 10:49:48,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:49:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:48,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:49:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:48,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:49:48,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996401832] [2021-11-09 10:49:48,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996401832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:49:48,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:49:48,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:49:48,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830266043] [2021-11-09 10:49:48,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:49:48,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:49:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:49:48,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:49:48,841 INFO L87 Difference]: Start difference. First operand has 1464 states, 721 states have (on average 2.234396671289875) internal successors, (1611), 1449 states have internal predecessors, (1611), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:49:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:49:48,993 INFO L93 Difference]: Finished difference Result 1446 states and 1529 transitions. [2021-11-09 10:49:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:49:48,995 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-09 10:49:48,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:49:49,031 INFO L225 Difference]: With dead ends: 1446 [2021-11-09 10:49:49,031 INFO L226 Difference]: Without dead ends: 1443 [2021-11-09 10:49:49,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:49:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-11-09 10:49:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-11-09 10:49:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 712 states have (on average 2.105337078651685) internal successors, (1499), 1429 states have internal predecessors, (1499), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 10:49:49,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1526 transitions. [2021-11-09 10:49:49,156 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1526 transitions. Word has length 9 [2021-11-09 10:49:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:49:49,157 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1526 transitions. [2021-11-09 10:49:49,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:49:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1526 transitions. [2021-11-09 10:49:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 10:49:49,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:49:49,158 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:49:49,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-09 10:49:49,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:49:49,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:49:49,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:49,373 INFO L85 PathProgramCache]: Analyzing trace with hash 477995291, now seen corresponding path program 1 times [2021-11-09 10:49:49,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:49:49,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156465822] [2021-11-09 10:49:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:49,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:49:49,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:49:49,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:49:49,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 10:49:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:49,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:49:49,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:49:49,726 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 [2021-11-09 10:49:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:49,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:49:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:49,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:49:49,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156465822] [2021-11-09 10:49:49,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156465822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:49:49,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:49:49,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:49:49,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407903240] [2021-11-09 10:49:49,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:49:49,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:49:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:49:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:49:49,816 INFO L87 Difference]: Start difference. First operand 1443 states and 1526 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:49:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:49:53,553 INFO L93 Difference]: Finished difference Result 1688 states and 1805 transitions. [2021-11-09 10:49:53,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:49:53,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-09 10:49:53,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:49:53,572 INFO L225 Difference]: With dead ends: 1688 [2021-11-09 10:49:53,572 INFO L226 Difference]: Without dead ends: 1688 [2021-11-09 10:49:53,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:49:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-11-09 10:49:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1428. [2021-11-09 10:49:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 788 states have (on average 1.9581218274111676) internal successors, (1543), 1414 states have internal predecessors, (1543), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 10:49:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1570 transitions. [2021-11-09 10:49:53,640 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1570 transitions. Word has length 9 [2021-11-09 10:49:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:49:53,641 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1570 transitions. [2021-11-09 10:49:53,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:49:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1570 transitions. [2021-11-09 10:49:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 10:49:53,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:49:53,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:49:53,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:49:53,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:49:53,855 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:49:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash 477995292, now seen corresponding path program 1 times [2021-11-09 10:49:53,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:49:53,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595542837] [2021-11-09 10:49:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:53,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:49:53,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:49:53,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:49:53,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 10:49:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:54,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:49:54,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:49:54,155 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 [2021-11-09 10:49:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:54,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:49:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:54,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:49:54,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595542837] [2021-11-09 10:49:54,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595542837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:49:54,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:49:54,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 10:49:54,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626235957] [2021-11-09 10:49:54,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:49:54,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:49:54,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:49:54,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:49:54,310 INFO L87 Difference]: Start difference. First operand 1428 states and 1570 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:02,280 INFO L93 Difference]: Finished difference Result 1990 states and 2173 transitions. [2021-11-09 10:50:02,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:50:02,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-09 10:50:02,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:02,294 INFO L225 Difference]: With dead ends: 1990 [2021-11-09 10:50:02,294 INFO L226 Difference]: Without dead ends: 1990 [2021-11-09 10:50:02,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:50:02,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2021-11-09 10:50:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1584. [2021-11-09 10:50:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 954 states have (on average 1.9381551362683438) internal successors, (1849), 1570 states have internal predecessors, (1849), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 10:50:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 1876 transitions. [2021-11-09 10:50:02,346 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 1876 transitions. Word has length 9 [2021-11-09 10:50:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:02,347 INFO L470 AbstractCegarLoop]: Abstraction has 1584 states and 1876 transitions. [2021-11-09 10:50:02,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 1876 transitions. [2021-11-09 10:50:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:50:02,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:02,348 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:02,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:02,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:02,563 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:50:02,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:02,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1934639506, now seen corresponding path program 1 times [2021-11-09 10:50:02,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:02,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43714334] [2021-11-09 10:50:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:02,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:02,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:02,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:02,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 10:50:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:02,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:50:02,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:02,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:02,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:02,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43714334] [2021-11-09 10:50:02,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43714334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:02,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:02,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 10:50:02,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461810566] [2021-11-09 10:50:02,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:50:02,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:50:02,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:50:02,891 INFO L87 Difference]: Start difference. First operand 1584 states and 1876 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:03,142 INFO L93 Difference]: Finished difference Result 3135 states and 3710 transitions. [2021-11-09 10:50:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:50:03,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-09 10:50:03,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:03,161 INFO L225 Difference]: With dead ends: 3135 [2021-11-09 10:50:03,161 INFO L226 Difference]: Without dead ends: 3135 [2021-11-09 10:50:03,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:50:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2021-11-09 10:50:03,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2518. [2021-11-09 10:50:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 1887 states have (on average 1.9438261791202969) internal successors, (3668), 2497 states have internal predecessors, (3668), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 10:50:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3709 transitions. [2021-11-09 10:50:03,258 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3709 transitions. Word has length 10 [2021-11-09 10:50:03,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:03,258 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3709 transitions. [2021-11-09 10:50:03,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3709 transitions. [2021-11-09 10:50:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 10:50:03,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:03,260 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:03,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:03,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:03,474 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:50:03,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -198428059, now seen corresponding path program 1 times [2021-11-09 10:50:03,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:03,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991806770] [2021-11-09 10:50:03,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:03,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:03,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:03,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:03,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 10:50:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:03,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:50:03,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:03,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:03,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:03,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991806770] [2021-11-09 10:50:03,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991806770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:03,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:03,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 10:50:03,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734698354] [2021-11-09 10:50:03,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:50:03,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:03,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:50:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:50:03,836 INFO L87 Difference]: Start difference. First operand 2518 states and 3709 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:03,887 INFO L93 Difference]: Finished difference Result 2458 states and 3623 transitions. [2021-11-09 10:50:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:50:03,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-09 10:50:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:03,905 INFO L225 Difference]: With dead ends: 2458 [2021-11-09 10:50:03,906 INFO L226 Difference]: Without dead ends: 2458 [2021-11-09 10:50:03,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:50:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-11-09 10:50:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2458. [2021-11-09 10:50:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2458 states, 1851 states have (on average 1.9351701782820097) internal successors, (3582), 2437 states have internal predecessors, (3582), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 10:50:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 3623 transitions. [2021-11-09 10:50:03,995 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 3623 transitions. Word has length 15 [2021-11-09 10:50:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:03,996 INFO L470 AbstractCegarLoop]: Abstraction has 2458 states and 3623 transitions. [2021-11-09 10:50:03,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 3623 transitions. [2021-11-09 10:50:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 10:50:03,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:03,997 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:04,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:04,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:04,211 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr29REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:50:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1710805312, now seen corresponding path program 1 times [2021-11-09 10:50:04,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:04,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828142978] [2021-11-09 10:50:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:04,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:04,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:04,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 10:50:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:04,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:50:04,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:04,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:04,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:04,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828142978] [2021-11-09 10:50:04,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828142978] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:04,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:04,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 10:50:04,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451446511] [2021-11-09 10:50:04,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:50:04,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:04,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:50:04,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:50:04,594 INFO L87 Difference]: Start difference. First operand 2458 states and 3623 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:04,734 INFO L93 Difference]: Finished difference Result 2430 states and 3567 transitions. [2021-11-09 10:50:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:50:04,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-09 10:50:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:04,754 INFO L225 Difference]: With dead ends: 2430 [2021-11-09 10:50:04,754 INFO L226 Difference]: Without dead ends: 2430 [2021-11-09 10:50:04,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:50:04,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2021-11-09 10:50:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2428. [2021-11-09 10:50:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1835 states have (on average 1.9204359673024523) internal successors, (3524), 2407 states have internal predecessors, (3524), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 10:50:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3565 transitions. [2021-11-09 10:50:04,838 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3565 transitions. Word has length 17 [2021-11-09 10:50:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:04,838 INFO L470 AbstractCegarLoop]: Abstraction has 2428 states and 3565 transitions. [2021-11-09 10:50:04,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3565 transitions. [2021-11-09 10:50:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 10:50:04,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:04,841 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:04,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:05,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:05,062 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:50:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:05,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1776633043, now seen corresponding path program 1 times [2021-11-09 10:50:05,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:05,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745843450] [2021-11-09 10:50:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:05,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:05,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:05,067 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:05,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 10:50:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:05,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:50:05,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:05,435 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 [2021-11-09 10:50:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:05,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:05,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:05,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745843450] [2021-11-09 10:50:05,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745843450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:05,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:05,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 10:50:05,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250955093] [2021-11-09 10:50:05,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:50:05,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:05,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:50:05,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:50:05,732 INFO L87 Difference]: Start difference. First operand 2428 states and 3565 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:10,281 INFO L93 Difference]: Finished difference Result 3690 states and 5247 transitions. [2021-11-09 10:50:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:50:10,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-09 10:50:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:10,306 INFO L225 Difference]: With dead ends: 3690 [2021-11-09 10:50:10,306 INFO L226 Difference]: Without dead ends: 3690 [2021-11-09 10:50:10,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:50:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-11-09 10:50:10,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 2424. [2021-11-09 10:50:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1835 states have (on average 1.9160762942779292) internal successors, (3516), 2403 states have internal predecessors, (3516), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 10:50:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3557 transitions. [2021-11-09 10:50:10,403 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3557 transitions. Word has length 31 [2021-11-09 10:50:10,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:10,404 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 3557 transitions. [2021-11-09 10:50:10,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3557 transitions. [2021-11-09 10:50:10,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 10:50:10,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:10,406 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:10,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:10,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:10,622 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:50:10,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:10,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1776633042, now seen corresponding path program 1 times [2021-11-09 10:50:10,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:10,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068388158] [2021-11-09 10:50:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:10,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:10,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:10,625 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:10,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 10:50:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:10,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:50:10,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:10,912 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 [2021-11-09 10:50:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:11,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:11,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:11,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068388158] [2021-11-09 10:50:11,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068388158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:11,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:11,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 10:50:11,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808807096] [2021-11-09 10:50:11,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:50:11,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:50:11,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:50:11,811 INFO L87 Difference]: Start difference. First operand 2424 states and 3557 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:22,709 INFO L93 Difference]: Finished difference Result 2989 states and 4144 transitions. [2021-11-09 10:50:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:50:22,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-09 10:50:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:22,730 INFO L225 Difference]: With dead ends: 2989 [2021-11-09 10:50:22,731 INFO L226 Difference]: Without dead ends: 2989 [2021-11-09 10:50:22,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:50:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2021-11-09 10:50:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2420. [2021-11-09 10:50:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1835 states have (on average 1.911716621253406) internal successors, (3508), 2399 states have internal predecessors, (3508), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 10:50:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3549 transitions. [2021-11-09 10:50:22,806 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3549 transitions. Word has length 31 [2021-11-09 10:50:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:22,806 INFO L470 AbstractCegarLoop]: Abstraction has 2420 states and 3549 transitions. [2021-11-09 10:50:22,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3549 transitions. [2021-11-09 10:50:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 10:50:22,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:22,809 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:22,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:23,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:23,028 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:50:23,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1157280663, now seen corresponding path program 1 times [2021-11-09 10:50:23,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:23,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366028875] [2021-11-09 10:50:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:23,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:23,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:23,030 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:23,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 10:50:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:23,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:50:23,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:23,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:23,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:23,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366028875] [2021-11-09 10:50:23,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366028875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:23,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:23,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 10:50:23,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545513421] [2021-11-09 10:50:23,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:50:23,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:50:23,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:50:23,719 INFO L87 Difference]: Start difference. First operand 2420 states and 3549 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:23,802 INFO L93 Difference]: Finished difference Result 2408 states and 3529 transitions. [2021-11-09 10:50:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:50:23,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-09 10:50:23,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:23,819 INFO L225 Difference]: With dead ends: 2408 [2021-11-09 10:50:23,820 INFO L226 Difference]: Without dead ends: 2408 [2021-11-09 10:50:23,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:50:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2021-11-09 10:50:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2408. [2021-11-09 10:50:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 1823 states have (on average 1.9133296763576522) internal successors, (3488), 2387 states have internal predecessors, (3488), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 10:50:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3529 transitions. [2021-11-09 10:50:23,880 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3529 transitions. Word has length 46 [2021-11-09 10:50:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:23,881 INFO L470 AbstractCegarLoop]: Abstraction has 2408 states and 3529 transitions. [2021-11-09 10:50:23,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3529 transitions. [2021-11-09 10:50:23,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 10:50:23,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:23,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:23,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:24,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:24,099 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:50:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:24,099 INFO L85 PathProgramCache]: Analyzing trace with hash 774874315, now seen corresponding path program 1 times [2021-11-09 10:50:24,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:24,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906218871] [2021-11-09 10:50:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:24,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:24,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:24,102 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:24,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 10:50:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:24,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:50:24,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:24,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:25,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:25,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906218871] [2021-11-09 10:50:25,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906218871] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:25,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:25,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 10:50:25,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960294068] [2021-11-09 10:50:25,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:50:25,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:50:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:50:25,474 INFO L87 Difference]: Start difference. First operand 2408 states and 3529 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:25,591 INFO L93 Difference]: Finished difference Result 2224 states and 3174 transitions. [2021-11-09 10:50:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:50:25,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-09 10:50:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:25,607 INFO L225 Difference]: With dead ends: 2224 [2021-11-09 10:50:25,608 INFO L226 Difference]: Without dead ends: 2224 [2021-11-09 10:50:25,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:50:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-11-09 10:50:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2224. [2021-11-09 10:50:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1639 states have (on average 1.9115314215985357) internal successors, (3133), 2203 states have internal predecessors, (3133), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 10:50:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3174 transitions. [2021-11-09 10:50:25,660 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3174 transitions. Word has length 54 [2021-11-09 10:50:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:25,661 INFO L470 AbstractCegarLoop]: Abstraction has 2224 states and 3174 transitions. [2021-11-09 10:50:25,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3174 transitions. [2021-11-09 10:50:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 10:50:25,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:25,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:25,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:25,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:25,884 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:50:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1275903144, now seen corresponding path program 1 times [2021-11-09 10:50:25,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:25,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856260706] [2021-11-09 10:50:25,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:25,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:25,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:25,887 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:25,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 10:50:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:26,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:50:26,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:26,541 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 [2021-11-09 10:50:26,548 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 [2021-11-09 10:50:27,398 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:50:27,398 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 26 treesize of output 28 [2021-11-09 10:50:27,408 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 10:50:27,408 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 25 treesize of output 21 [2021-11-09 10:50:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:27,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:32,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:32,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856260706] [2021-11-09 10:50:32,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856260706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:32,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:32,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 10:50:32,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045605367] [2021-11-09 10:50:32,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:50:32,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:50:32,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 10:50:32,804 INFO L87 Difference]: Start difference. First operand 2224 states and 3174 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:57,886 INFO L93 Difference]: Finished difference Result 3848 states and 5312 transitions. [2021-11-09 10:50:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:50:57,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-09 10:50:57,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:57,907 INFO L225 Difference]: With dead ends: 3848 [2021-11-09 10:50:57,908 INFO L226 Difference]: Without dead ends: 3848 [2021-11-09 10:50:57,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-09 10:50:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2021-11-09 10:50:57,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 2364. [2021-11-09 10:50:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 1817 states have (on average 1.8651623555310952) internal successors, (3389), 2337 states have internal predecessors, (3389), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 10:50:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3442 transitions. [2021-11-09 10:50:57,981 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3442 transitions. Word has length 57 [2021-11-09 10:50:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:57,982 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 3442 transitions. [2021-11-09 10:50:57,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:50:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3442 transitions. [2021-11-09 10:50:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 10:50:57,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:57,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:50:58,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:58,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:58,198 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:50:58,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:58,199 INFO L85 PathProgramCache]: Analyzing trace with hash -941052642, now seen corresponding path program 1 times [2021-11-09 10:50:58,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:58,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135513204] [2021-11-09 10:50:58,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:58,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:58,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:58,202 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:58,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 10:50:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:58,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:50:58,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:59,091 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 [2021-11-09 10:50:59,110 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 [2021-11-09 10:50:59,170 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 [2021-11-09 10:50:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:59,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:59,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:59,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135513204] [2021-11-09 10:50:59,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135513204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:50:59,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:50:59,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 10:50:59,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17286162] [2021-11-09 10:50:59,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:50:59,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:50:59,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:50:59,361 INFO L87 Difference]: Start difference. First operand 2364 states and 3442 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:51:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:04,558 INFO L93 Difference]: Finished difference Result 2363 states and 3440 transitions. [2021-11-09 10:51:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:51:04,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-09 10:51:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:04,569 INFO L225 Difference]: With dead ends: 2363 [2021-11-09 10:51:04,569 INFO L226 Difference]: Without dead ends: 2363 [2021-11-09 10:51:04,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:51:04,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-11-09 10:51:04,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2021-11-09 10:51:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 1817 states have (on average 1.864061640066043) internal successors, (3387), 2336 states have internal predecessors, (3387), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 10:51:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3440 transitions. [2021-11-09 10:51:04,623 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3440 transitions. Word has length 62 [2021-11-09 10:51:04,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:04,624 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3440 transitions. [2021-11-09 10:51:04,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:51:04,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3440 transitions. [2021-11-09 10:51:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 10:51:04,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:04,625 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:04,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:04,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:04,838 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:51:04,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash -941052641, now seen corresponding path program 1 times [2021-11-09 10:51:04,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:04,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180941802] [2021-11-09 10:51:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:04,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:04,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:04,841 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:04,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 10:51:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:05,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:51:05,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:05,723 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 [2021-11-09 10:51:05,760 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 [2021-11-09 10:51:05,774 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 [2021-11-09 10:51:05,849 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 [2021-11-09 10:51:05,852 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 [2021-11-09 10:51:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:05,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:06,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:06,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180941802] [2021-11-09 10:51:06,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180941802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:51:06,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:51:06,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 10:51:06,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109634016] [2021-11-09 10:51:06,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:51:06,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:06,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:51:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:51:06,288 INFO L87 Difference]: Start difference. First operand 2363 states and 3440 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:51:22,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:22,247 INFO L93 Difference]: Finished difference Result 2362 states and 3438 transitions. [2021-11-09 10:51:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:51:22,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-09 10:51:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:22,259 INFO L225 Difference]: With dead ends: 2362 [2021-11-09 10:51:22,259 INFO L226 Difference]: Without dead ends: 2362 [2021-11-09 10:51:22,260 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:51:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2021-11-09 10:51:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2021-11-09 10:51:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 1815 states have (on average 1.8650137741046833) internal successors, (3385), 2335 states have internal predecessors, (3385), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 10:51:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3438 transitions. [2021-11-09 10:51:22,312 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3438 transitions. Word has length 62 [2021-11-09 10:51:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:22,313 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 3438 transitions. [2021-11-09 10:51:22,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:51:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3438 transitions. [2021-11-09 10:51:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 10:51:22,314 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:22,315 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:22,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:22,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:22,534 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:51:22,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1858466459, now seen corresponding path program 1 times [2021-11-09 10:51:22,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:22,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714520341] [2021-11-09 10:51:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:22,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:22,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:22,538 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:22,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 10:51:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:23,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:51:23,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:23,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:23,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:23,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714520341] [2021-11-09 10:51:23,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714520341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:51:23,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:51:23,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 10:51:23,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336138735] [2021-11-09 10:51:23,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:51:23,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:51:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:51:23,805 INFO L87 Difference]: Start difference. First operand 2362 states and 3438 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:23,970 INFO L93 Difference]: Finished difference Result 2372 states and 3456 transitions. [2021-11-09 10:51:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:51:23,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-09 10:51:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:23,981 INFO L225 Difference]: With dead ends: 2372 [2021-11-09 10:51:23,981 INFO L226 Difference]: Without dead ends: 2372 [2021-11-09 10:51:23,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:51:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-11-09 10:51:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2372. [2021-11-09 10:51:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 1823 states have (on average 1.8634119583104773) internal successors, (3397), 2344 states have internal predecessors, (3397), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 10:51:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3456 transitions. [2021-11-09 10:51:24,037 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3456 transitions. Word has length 70 [2021-11-09 10:51:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:24,038 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 3456 transitions. [2021-11-09 10:51:24,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3456 transitions. [2021-11-09 10:51:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 10:51:24,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:24,040 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:24,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:24,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:24,256 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:51:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash -474665627, now seen corresponding path program 1 times [2021-11-09 10:51:24,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:24,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731281765] [2021-11-09 10:51:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:24,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:24,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:24,258 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:24,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 10:51:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:24,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:51:24,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:25,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:25,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:25,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731281765] [2021-11-09 10:51:25,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731281765] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:51:25,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:51:25,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 10:51:25,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731943753] [2021-11-09 10:51:25,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:51:25,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:51:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:51:25,620 INFO L87 Difference]: Start difference. First operand 2372 states and 3456 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:26,342 INFO L93 Difference]: Finished difference Result 2386 states and 3484 transitions. [2021-11-09 10:51:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:51:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-09 10:51:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:26,351 INFO L225 Difference]: With dead ends: 2386 [2021-11-09 10:51:26,351 INFO L226 Difference]: Without dead ends: 2382 [2021-11-09 10:51:26,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:51:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2021-11-09 10:51:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2378. [2021-11-09 10:51:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 1829 states have (on average 1.861673045379989) internal successors, (3405), 2350 states have internal predecessors, (3405), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 10:51:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 3464 transitions. [2021-11-09 10:51:26,406 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 3464 transitions. Word has length 72 [2021-11-09 10:51:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:26,407 INFO L470 AbstractCegarLoop]: Abstraction has 2378 states and 3464 transitions. [2021-11-09 10:51:26,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:26,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 3464 transitions. [2021-11-09 10:51:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 10:51:26,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:26,408 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:26,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:26,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:26,622 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:51:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash -472683163, now seen corresponding path program 2 times [2021-11-09 10:51:26,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:26,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007234942] [2021-11-09 10:51:26,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:51:26,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:26,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:26,626 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:26,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 10:51:27,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:51:27,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:51:27,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:51:27,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:27,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:28,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:28,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007234942] [2021-11-09 10:51:28,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007234942] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:51:28,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:51:28,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 10:51:28,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820841210] [2021-11-09 10:51:28,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 10:51:28,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 10:51:28,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:51:28,613 INFO L87 Difference]: Start difference. First operand 2378 states and 3464 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:30,653 INFO L93 Difference]: Finished difference Result 2406 states and 3532 transitions. [2021-11-09 10:51:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 10:51:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-09 10:51:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:30,662 INFO L225 Difference]: With dead ends: 2406 [2021-11-09 10:51:30,663 INFO L226 Difference]: Without dead ends: 2402 [2021-11-09 10:51:30,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 10:51:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2021-11-09 10:51:30,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2390. [2021-11-09 10:51:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 1841 states have (on average 1.8582292232482347) internal successors, (3421), 2362 states have internal predecessors, (3421), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 10:51:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3480 transitions. [2021-11-09 10:51:30,743 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3480 transitions. Word has length 76 [2021-11-09 10:51:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:30,743 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 3480 transitions. [2021-11-09 10:51:30,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3480 transitions. [2021-11-09 10:51:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 10:51:30,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:30,745 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:30,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:30,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:30,958 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:51:30,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:30,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1219489125, now seen corresponding path program 3 times [2021-11-09 10:51:30,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:30,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410260362] [2021-11-09 10:51:30,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:51:30,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:30,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:30,961 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:30,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 10:51:32,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 10:51:32,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:51:32,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 10:51:32,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:33,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:35,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:35,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410260362] [2021-11-09 10:51:35,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410260362] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:51:35,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:51:35,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 10:51:35,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066713087] [2021-11-09 10:51:35,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 10:51:35,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:35,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 10:51:35,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 10:51:35,484 INFO L87 Difference]: Start difference. First operand 2390 states and 3480 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:46,724 INFO L93 Difference]: Finished difference Result 2446 states and 3664 transitions. [2021-11-09 10:51:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 10:51:46,724 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-09 10:51:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:46,731 INFO L225 Difference]: With dead ends: 2446 [2021-11-09 10:51:46,731 INFO L226 Difference]: Without dead ends: 2440 [2021-11-09 10:51:46,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 10:51:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2021-11-09 10:51:46,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2414. [2021-11-09 10:51:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 1865 states have (on average 1.8509383378016087) internal successors, (3452), 2386 states have internal predecessors, (3452), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 10:51:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3511 transitions. [2021-11-09 10:51:46,796 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3511 transitions. Word has length 84 [2021-11-09 10:51:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:46,796 INFO L470 AbstractCegarLoop]: Abstraction has 2414 states and 3511 transitions. [2021-11-09 10:51:46,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:46,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3511 transitions. [2021-11-09 10:51:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 10:51:46,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:46,798 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:46,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:47,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:47,019 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:51:47,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:47,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1692986725, now seen corresponding path program 4 times [2021-11-09 10:51:47,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:47,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689697583] [2021-11-09 10:51:47,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:51:47,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:47,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:47,023 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:47,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 10:51:48,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:51:48,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:51:48,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 10:51:48,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:49,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:54,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:54,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689697583] [2021-11-09 10:51:54,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689697583] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:51:54,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:51:54,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 10:51:54,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700687683] [2021-11-09 10:51:54,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 10:51:54,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:54,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 10:51:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 10:51:54,889 INFO L87 Difference]: Start difference. First operand 2414 states and 3511 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:52:16,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:52:16,235 INFO L93 Difference]: Finished difference Result 2506 states and 3776 transitions. [2021-11-09 10:52:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 10:52:16,237 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-09 10:52:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:52:16,245 INFO L225 Difference]: With dead ends: 2506 [2021-11-09 10:52:16,245 INFO L226 Difference]: Without dead ends: 2502 [2021-11-09 10:52:16,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 10:52:16,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-11-09 10:52:16,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2444. [2021-11-09 10:52:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 1895 states have (on average 1.845910290237467) internal successors, (3498), 2416 states have internal predecessors, (3498), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 10:52:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3557 transitions. [2021-11-09 10:52:16,325 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3557 transitions. Word has length 100 [2021-11-09 10:52:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:52:16,326 INFO L470 AbstractCegarLoop]: Abstraction has 2444 states and 3557 transitions. [2021-11-09 10:52:16,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:52:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3557 transitions. [2021-11-09 10:52:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 10:52:16,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:52:16,328 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:52:16,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:16,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:52:16,550 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 725 more)] === [2021-11-09 10:52:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:52:16,551 INFO L85 PathProgramCache]: Analyzing trace with hash 282512741, now seen corresponding path program 5 times [2021-11-09 10:52:16,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:52:16,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890563900] [2021-11-09 10:52:16,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:52:16,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:52:16,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:52:16,554 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:52:16,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9940af8-6c71-43d1-9a0f-42e5273099a6/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 10:52:18,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 10:52:18,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:52:18,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 10:52:18,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:18,810 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 [2021-11-09 10:52:19,127 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 10:52:19,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-09 10:52:19,209 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 27 treesize of output 23 [2021-11-09 10:52:19,481 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 42 treesize of output 30