./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y --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 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:26:14,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:26:14,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:26:14,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:26:14,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:26:14,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:26:14,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:26:14,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:26:14,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:26:14,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:26:14,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:26:14,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:26:14,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:26:14,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:26:14,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:26:14,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:26:14,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:26:14,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:26:14,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:26:14,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:26:14,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:26:14,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:26:14,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:26:14,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:26:14,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:26:14,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:26:14,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:26:14,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:26:14,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:26:14,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:26:14,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:26:14,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:26:14,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:26:14,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:26:14,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:26:14,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:26:14,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:26:14,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:26:14,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:26:14,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:26:14,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:26:14,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:26:14,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:26:14,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:26:14,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:26:14,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:26:14,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:26:14,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:26:14,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:26:14,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:26:14,520 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:26:14,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:26:14,521 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:26:14,521 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:26:14,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:26:14,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:26:14,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:26:14,522 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:26:14,522 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:26:14,522 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:26:14,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:26:14,522 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:26:14,522 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:26:14,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:26:14,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:26:14,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:26:14,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:26:14,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:26:14,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:26:14,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:26:14,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:26:14,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:26:14,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:26:14,525 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c [2021-11-13 18:26:14,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:26:14,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:26:14,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:26:14,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:26:14,932 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:26:14,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2021-11-13 18:26:15,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data/fff0c98f1/59c455e0bf504eb6b8e1630d19c6c48c/FLAGf234a5e1a [2021-11-13 18:26:15,777 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:26:15,777 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2021-11-13 18:26:15,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data/fff0c98f1/59c455e0bf504eb6b8e1630d19c6c48c/FLAGf234a5e1a [2021-11-13 18:26:15,853 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data/fff0c98f1/59c455e0bf504eb6b8e1630d19c6c48c [2021-11-13 18:26:15,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:26:15,857 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:26:15,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:26:15,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:26:15,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:26:15,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:26:15" (1/1) ... [2021-11-13 18:26:15,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8797f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:15, skipping insertion in model container [2021-11-13 18:26:15,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:26:15" (1/1) ... [2021-11-13 18:26:15,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:26:15,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:26:16,460 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2021-11-13 18:26:16,773 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2021-11-13 18:26:16,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:26:16,801 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) [2021-11-13 18:26:16,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e6ccead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:16, skipping insertion in model container [2021-11-13 18:26:16,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:26:16,812 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:26:16,814 INFO L158 Benchmark]: Toolchain (without parser) took 955.58ms. Allocated memory is still 119.5MB. Free memory was 96.6MB in the beginning and 74.0MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-13 18:26:16,814 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 79.7MB. Free memory was 60.5MB in the beginning and 60.4MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:26:16,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 953.08ms. Allocated memory is still 119.5MB. Free memory was 96.2MB in the beginning and 74.0MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-13 18:26:16,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 79.7MB. Free memory was 60.5MB in the beginning and 60.4MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 953.08ms. Allocated memory is still 119.5MB. Free memory was 96.2MB in the beginning and 74.0MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y --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 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:26:19,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:26:19,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:26:19,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:26:19,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:26:19,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:26:19,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:26:19,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:26:19,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:26:19,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:26:19,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:26:19,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:26:19,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:26:19,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:26:19,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:26:19,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:26:19,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:26:19,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:26:19,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:26:19,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:26:19,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:26:19,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:26:19,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:26:19,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:26:19,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:26:19,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:26:19,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:26:19,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:26:19,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:26:19,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:26:19,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:26:19,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:26:19,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:26:19,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:26:19,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:26:19,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:26:19,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:26:19,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:26:19,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:26:19,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:26:19,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:26:19,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:26:19,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:26:19,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:26:19,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:26:19,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:26:19,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:26:19,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:26:19,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:26:19,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:26:19,209 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:26:19,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:26:19,210 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:26:19,211 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:26:19,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:26:19,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:26:19,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:26:19,212 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:26:19,212 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:26:19,212 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:26:19,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:26:19,212 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:26:19,213 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:26:19,213 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:26:19,213 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:26:19,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:26:19,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:26:19,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:26:19,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:26:19,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:26:19,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:26:19,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:26:19,215 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:26:19,215 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:26:19,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:26:19,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:26:19,216 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c [2021-11-13 18:26:19,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:26:19,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:26:19,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:26:19,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:26:19,682 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:26:19,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2021-11-13 18:26:19,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data/624aaf457/7560517e67b34321829931551542791f/FLAG1b375b41b [2021-11-13 18:26:20,608 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:26:20,609 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2021-11-13 18:26:20,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data/624aaf457/7560517e67b34321829931551542791f/FLAG1b375b41b [2021-11-13 18:26:20,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/data/624aaf457/7560517e67b34321829931551542791f [2021-11-13 18:26:20,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:26:20,694 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:26:20,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:26:20,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:26:20,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:26:20,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:26:20" (1/1) ... [2021-11-13 18:26:20,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e42613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:20, skipping insertion in model container [2021-11-13 18:26:20,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:26:20" (1/1) ... [2021-11-13 18:26:20,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:26:20,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:26:21,305 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2021-11-13 18:26:21,582 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2021-11-13 18:26:21,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:26:21,606 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:26:21,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:26:21,661 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2021-11-13 18:26:21,854 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2021-11-13 18:26:21,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:26:21,866 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:26:21,937 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2021-11-13 18:26:22,064 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_e24ea5e0-7af0-4fa0-a941-b54af5034d10/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2021-11-13 18:26:22,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:26:22,127 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:26:22,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22 WrapperNode [2021-11-13 18:26:22,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:26:22,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:26:22,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:26:22,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:26:22,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22" (1/1) ... [2021-11-13 18:26:22,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22" (1/1) ... [2021-11-13 18:26:22,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22" (1/1) ... [2021-11-13 18:26:22,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22" (1/1) ... [2021-11-13 18:26:22,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22" (1/1) ... [2021-11-13 18:26:22,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22" (1/1) ... [2021-11-13 18:26:22,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22" (1/1) ... [2021-11-13 18:26:22,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:26:22,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:26:22,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:26:22,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:26:22,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22" (1/1) ... [2021-11-13 18:26:22,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:26:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:26:22,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:26:22,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:26:22,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:26:22,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:26:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:26:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:26:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:26:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:26:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:26:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:26:22,539 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:26:22,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:26:22,539 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 18:26:22,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:26:22,539 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:26:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 18:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 18:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 18:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 18:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 18:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 18:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 18:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 18:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 18:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 18:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 18:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 18:26:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 18:26:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 18:26:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 18:26:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 18:26:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 18:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 18:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 18:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 18:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 18:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 18:26:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 18:26:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 18:26:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 18:26:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 18:26:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 18:26:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 18:26:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 18:26:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 18:26:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 18:26:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 18:26:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 18:26:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 18:26:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 18:26:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 18:26:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 18:26:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 18:26:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 18:26:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 18:26:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 18:26:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 18:26:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 18:26:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 18:26:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 18:26:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 18:26:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:26:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:26:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:26:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:26:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:26:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:26:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:26:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:26:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:26:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:26:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:26:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:26:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:26:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:26:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:26:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:26:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:26:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:26:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:26:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:26:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:26:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:26:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:26:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:26:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:26:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:26:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:26:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:26:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:26:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:26:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:26:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:26:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:26:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:26:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:26:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:26:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:26:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:26:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:26:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:26:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:26:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:26:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:26:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:26:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:26:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:26:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:26:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:26:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:26:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:26:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:26:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:26:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:26:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:26:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:26:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:26:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:26:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:26:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:26:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:26:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:26:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:26:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:26:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:26:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:26:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:26:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:26:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:26:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:26:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:26:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:26:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:26:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:26:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:26:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:26:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:26:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:26:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:26:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:26:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:26:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:26:22,578 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:26:22,578 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:26:22,578 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:26:22,578 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:26:22,578 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:26:22,578 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:26:22,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:26:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:26:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:26:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:26:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:26:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:26:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:26:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:26:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:26:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:26:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:26:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:26:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:26:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:26:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:26:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:26:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:26:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:26:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:26:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:26:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:26:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:26:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:26:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:26:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:26:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:26:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 18:26:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:26:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:26:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:26:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:26:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:26:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:26:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:26:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:26:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:26:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:26:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:26:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:26:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:26:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:26:24,726 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:26:29,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:26:29,250 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-13 18:26:29,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:26:29 BoogieIcfgContainer [2021-11-13 18:26:29,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:26:29,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:26:29,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:26:29,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:26:29,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:26:20" (1/3) ... [2021-11-13 18:26:29,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4040c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:26:29, skipping insertion in model container [2021-11-13 18:26:29,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:22" (2/3) ... [2021-11-13 18:26:29,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4040c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:26:29, skipping insertion in model container [2021-11-13 18:26:29,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:26:29" (3/3) ... [2021-11-13 18:26:29,269 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test9-2.i [2021-11-13 18:26:29,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:26:29,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-13 18:26:29,347 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:26:29,357 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 [2021-11-13 18:26:29,357 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-13 18:26:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 2079 states, 1034 states have (on average 2.120889748549323) internal successors, (2193), 2067 states have internal predecessors, (2193), 506 states have call successors, (506), 5 states have call predecessors, (506), 5 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:26:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:26:29,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:29,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:29,432 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:29,437 INFO L85 PathProgramCache]: Analyzing trace with hash -409959422, now seen corresponding path program 1 times [2021-11-13 18:26:29,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:29,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962898343] [2021-11-13 18:26:29,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:29,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:29,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:29,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:29,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:26:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:29,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:26:29,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:29,791 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 [2021-11-13 18:26:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:29,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:29,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:29,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962898343] [2021-11-13 18:26:29,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962898343] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:29,859 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:29,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:26:29,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160498480] [2021-11-13 18:26:29,861 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:29,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:26:29,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:26:29,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:26:29,927 INFO L87 Difference]: Start difference. First operand has 2079 states, 1034 states have (on average 2.120889748549323) internal successors, (2193), 2067 states have internal predecessors, (2193), 506 states have call successors, (506), 5 states have call predecessors, (506), 5 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-13 18:26:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:32,171 INFO L93 Difference]: Finished difference Result 2243 states and 3309 transitions. [2021-11-13 18:26:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:26:32,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-11-13 18:26:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:32,244 INFO L225 Difference]: With dead ends: 2243 [2021-11-13 18:26:32,244 INFO L226 Difference]: Without dead ends: 2240 [2021-11-13 18:26:32,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:26:32,253 INFO L933 BasicCegarLoop]: 2644 mSDtfsCounter, 983 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1711.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.38ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2050.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:32,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 4801 Invalid, 652 Unknown, 0 Unchecked, 38.38ms Time], IncrementalHoareTripleChecker [16 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2050.83ms Time] [2021-11-13 18:26:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-11-13 18:26:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2062. [2021-11-13 18:26:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1034 states have (on average 2.039651837524178) internal successors, (2109), 2051 states have internal predecessors, (2109), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-13 18:26:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3120 transitions. [2021-11-13 18:26:32,846 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3120 transitions. Word has length 7 [2021-11-13 18:26:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:32,846 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 3120 transitions. [2021-11-13 18:26:32,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-13 18:26:32,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3120 transitions. [2021-11-13 18:26:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:26:32,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:32,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:32,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-13 18:26:33,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:33,059 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:33,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash -409959421, now seen corresponding path program 1 times [2021-11-13 18:26:33,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:33,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640429532] [2021-11-13 18:26:33,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:33,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:33,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:33,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:33,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:26:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:33,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:33,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:33,301 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 [2021-11-13 18:26:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:33,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:33,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:33,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640429532] [2021-11-13 18:26:33,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640429532] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:33,391 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:33,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:26:33,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616559649] [2021-11-13 18:26:33,391 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:33,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:33,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:33,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:33,393 INFO L87 Difference]: Start difference. First operand 2062 states and 3120 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-13 18:26:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:39,000 INFO L93 Difference]: Finished difference Result 2544 states and 3638 transitions. [2021-11-13 18:26:39,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:26:39,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 7 [2021-11-13 18:26:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:39,027 INFO L225 Difference]: With dead ends: 2544 [2021-11-13 18:26:39,027 INFO L226 Difference]: Without dead ends: 2544 [2021-11-13 18:26:39,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:39,029 INFO L933 BasicCegarLoop]: 2784 mSDtfsCounter, 1601 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4806.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 5415 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.03ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5450.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:39,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 5415 Invalid, 897 Unknown, 0 Unchecked, 35.03ms Time], IncrementalHoareTripleChecker [19 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 5450.25ms Time] [2021-11-13 18:26:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-11-13 18:26:39,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2097. [2021-11-13 18:26:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1078 states have (on average 2.0296846011131726) internal successors, (2188), 2086 states have internal predecessors, (2188), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-13 18:26:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 3199 transitions. [2021-11-13 18:26:39,278 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 3199 transitions. Word has length 7 [2021-11-13 18:26:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:39,278 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 3199 transitions. [2021-11-13 18:26:39,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-13 18:26:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 3199 transitions. [2021-11-13 18:26:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:26:39,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:39,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:39,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 18:26:39,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:39,492 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:39,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:39,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1112436547, now seen corresponding path program 1 times [2021-11-13 18:26:39,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:39,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012641424] [2021-11-13 18:26:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:39,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:39,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:39,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:39,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:26:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:39,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:26:39,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:39,737 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 [2021-11-13 18:26:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:39,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:39,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:39,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012641424] [2021-11-13 18:26:39,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012641424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:39,793 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:39,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:26:39,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385318516] [2021-11-13 18:26:39,793 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:39,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:26:39,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:26:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:26:39,798 INFO L87 Difference]: Start difference. First operand 2097 states and 3199 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-11-13 18:26:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:41,773 INFO L93 Difference]: Finished difference Result 2263 states and 3383 transitions. [2021-11-13 18:26:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:26:41,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 12 [2021-11-13 18:26:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:41,793 INFO L225 Difference]: With dead ends: 2263 [2021-11-13 18:26:41,793 INFO L226 Difference]: Without dead ends: 2263 [2021-11-13 18:26:41,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:26:41,795 INFO L933 BasicCegarLoop]: 2875 mSDtfsCounter, 804 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1572.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 5140 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.80ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1894.95ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:41,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 5140 Invalid, 681 Unknown, 0 Unchecked, 19.80ms Time], IncrementalHoareTripleChecker [51 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 1894.95ms Time] [2021-11-13 18:26:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2021-11-13 18:26:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2050. [2021-11-13 18:26:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 1078 states have (on average 1.9833024118738405) internal successors, (2138), 2039 states have internal predecessors, (2138), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-13 18:26:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3149 transitions. [2021-11-13 18:26:42,037 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3149 transitions. Word has length 12 [2021-11-13 18:26:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:42,038 INFO L470 AbstractCegarLoop]: Abstraction has 2050 states and 3149 transitions. [2021-11-13 18:26:42,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-11-13 18:26:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3149 transitions. [2021-11-13 18:26:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:26:42,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:42,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:42,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:42,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:42,256 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:42,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:42,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1112436548, now seen corresponding path program 1 times [2021-11-13 18:26:42,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:42,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900194060] [2021-11-13 18:26:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:42,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:42,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:42,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:42,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:26:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:42,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:42,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:42,510 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 [2021-11-13 18:26:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:42,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:42,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:42,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900194060] [2021-11-13 18:26:42,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900194060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:42,639 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:42,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:26:42,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642965286] [2021-11-13 18:26:42,639 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:42,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:42,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:42,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:42,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:42,641 INFO L87 Difference]: Start difference. First operand 2050 states and 3149 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-13 18:26:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:47,130 INFO L93 Difference]: Finished difference Result 2293 states and 3377 transitions. [2021-11-13 18:26:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:26:47,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12 [2021-11-13 18:26:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:47,149 INFO L225 Difference]: With dead ends: 2293 [2021-11-13 18:26:47,149 INFO L226 Difference]: Without dead ends: 2293 [2021-11-13 18:26:47,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:47,152 INFO L933 BasicCegarLoop]: 3035 mSDtfsCounter, 530 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3883.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 7879 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.13ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4388.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:47,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 7879 Invalid, 1107 Unknown, 0 Unchecked, 21.13ms Time], IncrementalHoareTripleChecker [14 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 4388.22ms Time] [2021-11-13 18:26:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2021-11-13 18:26:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2040. [2021-11-13 18:26:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1078 states have (on average 1.971243042671614) internal successors, (2125), 2029 states have internal predecessors, (2125), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-13 18:26:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3136 transitions. [2021-11-13 18:26:47,372 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3136 transitions. Word has length 12 [2021-11-13 18:26:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:47,372 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 3136 transitions. [2021-11-13 18:26:47,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-13 18:26:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3136 transitions. [2021-11-13 18:26:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:26:47,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:47,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:47,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:47,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:47,588 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash -164522606, now seen corresponding path program 1 times [2021-11-13 18:26:47,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:47,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130798802] [2021-11-13 18:26:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:47,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:47,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:47,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:47,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:26:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:47,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:47,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:47,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:47,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:47,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130798802] [2021-11-13 18:26:47,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130798802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:47,987 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:47,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:26:47,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776150571] [2021-11-13 18:26:47,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:47,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:26:47,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:26:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:26:47,989 INFO L87 Difference]: Start difference. First operand 2040 states and 3136 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-13 18:26:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:48,365 INFO L93 Difference]: Finished difference Result 2502 states and 3633 transitions. [2021-11-13 18:26:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:26:48,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 [2021-11-13 18:26:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:48,383 INFO L225 Difference]: With dead ends: 2502 [2021-11-13 18:26:48,383 INFO L226 Difference]: Without dead ends: 2502 [2021-11-13 18:26:48,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:26:48,384 INFO L933 BasicCegarLoop]: 3116 mSDtfsCounter, 558 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 262.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 6012 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.34ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 312.24ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:48,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 6012 Invalid, 119 Unknown, 0 Unchecked, 17.34ms Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 312.24ms Time] [2021-11-13 18:26:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-11-13 18:26:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2209. [2021-11-13 18:26:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1246 states have (on average 1.9382022471910112) internal successors, (2415), 2197 states have internal predecessors, (2415), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:26:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3428 transitions. [2021-11-13 18:26:48,606 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3428 transitions. Word has length 15 [2021-11-13 18:26:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:48,607 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3428 transitions. [2021-11-13 18:26:48,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-13 18:26:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3428 transitions. [2021-11-13 18:26:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:26:48,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:48,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:48,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:48,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:48,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr340REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash 469915093, now seen corresponding path program 1 times [2021-11-13 18:26:48,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:48,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158184916] [2021-11-13 18:26:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:48,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:48,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:48,826 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:48,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:26:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:49,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:26:49,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:49,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:49,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:49,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158184916] [2021-11-13 18:26:49,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158184916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:49,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:49,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:26:49,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838313890] [2021-11-13 18:26:49,102 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:49,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:49,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:49,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:49,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:49,103 INFO L87 Difference]: Start difference. First operand 2209 states and 3428 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-13 18:26:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:49,169 INFO L93 Difference]: Finished difference Result 2363 states and 3568 transitions. [2021-11-13 18:26:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:26:49,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 [2021-11-13 18:26:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:49,185 INFO L225 Difference]: With dead ends: 2363 [2021-11-13 18:26:49,185 INFO L226 Difference]: Without dead ends: 2363 [2021-11-13 18:26:49,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:49,187 INFO L933 BasicCegarLoop]: 3211 mSDtfsCounter, 784 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 6039 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:49,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 6039 Invalid, 13 Unknown, 0 Unchecked, 7.41ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 15.83ms Time] [2021-11-13 18:26:49,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-11-13 18:26:49,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2149. [2021-11-13 18:26:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1210 states have (on average 1.9247933884297521) internal successors, (2329), 2137 states have internal predecessors, (2329), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:26:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3342 transitions. [2021-11-13 18:26:49,337 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3342 transitions. Word has length 17 [2021-11-13 18:26:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:49,337 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3342 transitions. [2021-11-13 18:26:49,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-13 18:26:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3342 transitions. [2021-11-13 18:26:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 18:26:49,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:49,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:49,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:49,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:49,551 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr431REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash -725148639, now seen corresponding path program 1 times [2021-11-13 18:26:49,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:49,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126521789] [2021-11-13 18:26:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:49,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:49,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:49,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:49,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:26:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:49,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:26:49,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:49,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:49,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:49,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126521789] [2021-11-13 18:26:49,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126521789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:49,984 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:49,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:26:49,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62636485] [2021-11-13 18:26:49,985 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:49,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:49,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:49,987 INFO L87 Difference]: Start difference. First operand 2149 states and 3342 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-13 18:26:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:50,743 INFO L93 Difference]: Finished difference Result 2420 states and 3549 transitions. [2021-11-13 18:26:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:26:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 18 [2021-11-13 18:26:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:50,763 INFO L225 Difference]: With dead ends: 2420 [2021-11-13 18:26:50,763 INFO L226 Difference]: Without dead ends: 2420 [2021-11-13 18:26:50,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:26:50,764 INFO L933 BasicCegarLoop]: 3072 mSDtfsCounter, 523 mSDsluCounter, 5817 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 584.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 8889 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.47ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 683.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:50,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 8889 Invalid, 260 Unknown, 0 Unchecked, 12.47ms Time], IncrementalHoareTripleChecker [7 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 683.17ms Time] [2021-11-13 18:26:50,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-11-13 18:26:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2151. [2021-11-13 18:26:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1212 states have (on average 1.9232673267326732) internal successors, (2331), 2139 states have internal predecessors, (2331), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:26:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3344 transitions. [2021-11-13 18:26:50,945 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3344 transitions. Word has length 18 [2021-11-13 18:26:50,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:50,945 INFO L470 AbstractCegarLoop]: Abstraction has 2151 states and 3344 transitions. [2021-11-13 18:26:50,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-13 18:26:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3344 transitions. [2021-11-13 18:26:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 18:26:50,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:50,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:50,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:51,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:51,163 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash -725141857, now seen corresponding path program 1 times [2021-11-13 18:26:51,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:51,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407429714] [2021-11-13 18:26:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:51,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:51,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:51,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:51,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:26:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:51,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:51,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:51,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:26:51,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:26:51,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:26:51,489 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 18:26:51,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 18:26:51,547 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 18:26:51,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 18:26:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:51,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:51,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:51,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407429714] [2021-11-13 18:26:51,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407429714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:51,673 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:51,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:26:51,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702341183] [2021-11-13 18:26:51,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:51,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:26:51,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:26:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:26:51,675 INFO L87 Difference]: Start difference. First operand 2151 states and 3344 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-13 18:26:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:53,582 INFO L93 Difference]: Finished difference Result 2466 states and 3692 transitions. [2021-11-13 18:26:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:26:53,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-11-13 18:26:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:53,597 INFO L225 Difference]: With dead ends: 2466 [2021-11-13 18:26:53,598 INFO L226 Difference]: Without dead ends: 2466 [2021-11-13 18:26:53,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:26:53,599 INFO L933 BasicCegarLoop]: 2969 mSDtfsCounter, 330 mSDsluCounter, 11656 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1582.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 14625 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1810.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:53,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 14625 Invalid, 401 Unknown, 0 Unchecked, 19.14ms Time], IncrementalHoareTripleChecker [2 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1810.59ms Time] [2021-11-13 18:26:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2021-11-13 18:26:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2150. [2021-11-13 18:26:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1211 states have (on average 1.9232039636663913) internal successors, (2329), 2138 states have internal predecessors, (2329), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:26:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3342 transitions. [2021-11-13 18:26:53,754 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3342 transitions. Word has length 18 [2021-11-13 18:26:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:53,754 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 3342 transitions. [2021-11-13 18:26:53,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-13 18:26:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3342 transitions. [2021-11-13 18:26:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 18:26:53,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:53,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:53,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:53,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:53,973 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr15REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:53,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:53,973 INFO L85 PathProgramCache]: Analyzing trace with hash -269312016, now seen corresponding path program 1 times [2021-11-13 18:26:53,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:53,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837687389] [2021-11-13 18:26:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:53,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:53,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:53,976 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:54,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:26:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:54,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:26:54,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:54,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:54,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:54,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837687389] [2021-11-13 18:26:54,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837687389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:54,319 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:54,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:26:54,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541053270] [2021-11-13 18:26:54,319 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:54,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:54,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:54,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:54,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:54,320 INFO L87 Difference]: Start difference. First operand 2150 states and 3342 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-13 18:26:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:54,373 INFO L93 Difference]: Finished difference Result 2090 states and 3256 transitions. [2021-11-13 18:26:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:26:54,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 22 [2021-11-13 18:26:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:54,388 INFO L225 Difference]: With dead ends: 2090 [2021-11-13 18:26:54,389 INFO L226 Difference]: Without dead ends: 2090 [2021-11-13 18:26:54,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:54,392 INFO L933 BasicCegarLoop]: 2963 mSDtfsCounter, 933 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 7035 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.68ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:54,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 7035 Invalid, 12 Unknown, 0 Unchecked, 8.39ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 15.68ms Time] [2021-11-13 18:26:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-11-13 18:26:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2090. [2021-11-13 18:26:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1175 states have (on average 1.9089361702127658) internal successors, (2243), 2078 states have internal predecessors, (2243), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:26:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3256 transitions. [2021-11-13 18:26:54,586 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3256 transitions. Word has length 22 [2021-11-13 18:26:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:54,587 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3256 transitions. [2021-11-13 18:26:54,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-13 18:26:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3256 transitions. [2021-11-13 18:26:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:26:54,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:54,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:54,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:54,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:54,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1110716631, now seen corresponding path program 1 times [2021-11-13 18:26:54,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:54,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147265444] [2021-11-13 18:26:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:54,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:54,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:54,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:26:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:54,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:54,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:55,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:55,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:55,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147265444] [2021-11-13 18:26:55,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147265444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:55,098 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:55,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:26:55,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998443698] [2021-11-13 18:26:55,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:55,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:26:55,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:55,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:26:55,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:26:55,102 INFO L87 Difference]: Start difference. First operand 2090 states and 3256 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-13 18:26:55,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:55,228 INFO L93 Difference]: Finished difference Result 2062 states and 3200 transitions. [2021-11-13 18:26:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:26:55,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2021-11-13 18:26:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:55,244 INFO L225 Difference]: With dead ends: 2062 [2021-11-13 18:26:55,244 INFO L226 Difference]: Without dead ends: 2062 [2021-11-13 18:26:55,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:26:55,245 INFO L933 BasicCegarLoop]: 2918 mSDtfsCounter, 1798 mSDsluCounter, 4948 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 7866 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.54ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.02ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:55,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1802 Valid, 7866 Invalid, 78 Unknown, 0 Unchecked, 12.54ms Time], IncrementalHoareTripleChecker [46 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 71.02ms Time] [2021-11-13 18:26:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2021-11-13 18:26:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2060. [2021-11-13 18:26:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1159 states have (on average 1.8852459016393444) internal successors, (2185), 2048 states have internal predecessors, (2185), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:26:55,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3198 transitions. [2021-11-13 18:26:55,392 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3198 transitions. Word has length 24 [2021-11-13 18:26:55,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:55,392 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 3198 transitions. [2021-11-13 18:26:55,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-13 18:26:55,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3198 transitions. [2021-11-13 18:26:55,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:26:55,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:55,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:55,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:55,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:55,606 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1089939529, now seen corresponding path program 1 times [2021-11-13 18:26:55,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:55,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260910241] [2021-11-13 18:26:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:55,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:55,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:55,608 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:55,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:26:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:55,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:55,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:55,838 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 [2021-11-13 18:26:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:55,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:56,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:56,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260910241] [2021-11-13 18:26:56,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260910241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:56,099 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:56,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:26:56,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815539390] [2021-11-13 18:26:56,100 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:56,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:56,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:56,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:56,102 INFO L87 Difference]: Start difference. First operand 2060 states and 3198 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-13 18:26:58,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:58,224 INFO L93 Difference]: Finished difference Result 2493 states and 3697 transitions. [2021-11-13 18:26:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:26:58,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 38 [2021-11-13 18:26:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:58,253 INFO L225 Difference]: With dead ends: 2493 [2021-11-13 18:26:58,253 INFO L226 Difference]: Without dead ends: 2493 [2021-11-13 18:26:58,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:26:58,254 INFO L933 BasicCegarLoop]: 2498 mSDtfsCounter, 1443 mSDsluCounter, 4529 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1744.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 7027 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.46ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2048.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:58,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 7027 Invalid, 894 Unknown, 0 Unchecked, 17.46ms Time], IncrementalHoareTripleChecker [21 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 2048.93ms Time] [2021-11-13 18:26:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2021-11-13 18:26:58,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2056. [2021-11-13 18:26:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 1159 states have (on average 1.8783433994823124) internal successors, (2177), 2044 states have internal predecessors, (2177), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:26:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 3190 transitions. [2021-11-13 18:26:58,409 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 3190 transitions. Word has length 38 [2021-11-13 18:26:58,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:58,410 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 3190 transitions. [2021-11-13 18:26:58,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-13 18:26:58,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 3190 transitions. [2021-11-13 18:26:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:26:58,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:58,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:58,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:58,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:58,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:26:58,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:58,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1089939528, now seen corresponding path program 1 times [2021-11-13 18:26:58,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:58,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459525002] [2021-11-13 18:26:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:58,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:58,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:58,627 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:58,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:26:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:58,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:26:58,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:58,854 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 [2021-11-13 18:26:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:59,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:59,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:59,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459525002] [2021-11-13 18:26:59,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459525002] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:59,594 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:59,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:26:59,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097115224] [2021-11-13 18:26:59,594 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:59,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:26:59,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:59,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:26:59,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:26:59,595 INFO L87 Difference]: Start difference. First operand 2056 states and 3190 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-13 18:27:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:06,287 INFO L93 Difference]: Finished difference Result 2547 states and 3714 transitions. [2021-11-13 18:27:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:27:06,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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 38 [2021-11-13 18:27:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:06,299 INFO L225 Difference]: With dead ends: 2547 [2021-11-13 18:27:06,299 INFO L226 Difference]: Without dead ends: 2547 [2021-11-13 18:27:06,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:27:06,300 INFO L933 BasicCegarLoop]: 3135 mSDtfsCounter, 1341 mSDsluCounter, 7356 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5726.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 10491 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.97ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6529.20ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:06,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 10491 Invalid, 1617 Unknown, 0 Unchecked, 20.97ms Time], IncrementalHoareTripleChecker [13 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 6529.20ms Time] [2021-11-13 18:27:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-11-13 18:27:06,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2052. [2021-11-13 18:27:06,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1159 states have (on average 1.8714408973252805) internal successors, (2169), 2040 states have internal predecessors, (2169), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:27:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3182 transitions. [2021-11-13 18:27:06,471 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3182 transitions. Word has length 38 [2021-11-13 18:27:06,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:06,472 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 3182 transitions. [2021-11-13 18:27:06,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-13 18:27:06,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3182 transitions. [2021-11-13 18:27:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 18:27:06,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:06,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:06,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:06,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:06,685 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1864679286, now seen corresponding path program 1 times [2021-11-13 18:27:06,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:06,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985473672] [2021-11-13 18:27:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:06,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:06,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:06,688 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:06,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:27:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:06,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:06,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:07,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:07,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:07,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985473672] [2021-11-13 18:27:07,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985473672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:07,209 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:07,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:27:07,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446811060] [2021-11-13 18:27:07,209 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:07,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:07,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:07,210 INFO L87 Difference]: Start difference. First operand 2052 states and 3182 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2021-11-13 18:27:07,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:07,290 INFO L93 Difference]: Finished difference Result 2040 states and 3162 transitions. [2021-11-13 18:27:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:27:07,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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 56 [2021-11-13 18:27:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:07,297 INFO L225 Difference]: With dead ends: 2040 [2021-11-13 18:27:07,298 INFO L226 Difference]: Without dead ends: 2040 [2021-11-13 18:27:07,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:27:07,299 INFO L933 BasicCegarLoop]: 2912 mSDtfsCounter, 880 mSDsluCounter, 4932 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 7844 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.95ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:07,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 7844 Invalid, 41 Unknown, 0 Unchecked, 7.95ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 36.27ms Time] [2021-11-13 18:27:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-11-13 18:27:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2040. [2021-11-13 18:27:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1147 states have (on average 1.873583260680035) internal successors, (2149), 2028 states have internal predecessors, (2149), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:27:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3162 transitions. [2021-11-13 18:27:07,466 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3162 transitions. Word has length 56 [2021-11-13 18:27:07,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:07,466 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 3162 transitions. [2021-11-13 18:27:07,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2021-11-13 18:27:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3162 transitions. [2021-11-13 18:27:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:27:07,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:07,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:07,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:07,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:07,681 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash -324235966, now seen corresponding path program 1 times [2021-11-13 18:27:07,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:07,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683405834] [2021-11-13 18:27:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:07,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:07,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:07,683 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:07,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:27:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:08,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:27:08,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:08,058 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 [2021-11-13 18:27:08,066 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 [2021-11-13 18:27:08,771 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:27:08,772 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 [2021-11-13 18:27:08,782 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:27:08,783 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 [2021-11-13 18:27:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:08,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:13,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:13,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683405834] [2021-11-13 18:27:13,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683405834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:13,763 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:13,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:27:13,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885428217] [2021-11-13 18:27:13,764 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:13,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:13,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:13,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:13,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:27:13,766 INFO L87 Difference]: Start difference. First operand 2040 states and 3162 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-11-13 18:27:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:19,092 INFO L93 Difference]: Finished difference Result 2439 states and 3595 transitions. [2021-11-13 18:27:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:27:19,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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 64 [2021-11-13 18:27:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:19,099 INFO L225 Difference]: With dead ends: 2439 [2021-11-13 18:27:19,100 INFO L226 Difference]: Without dead ends: 2439 [2021-11-13 18:27:19,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 18:27:19,101 INFO L933 BasicCegarLoop]: 2736 mSDtfsCounter, 1089 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4531.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 7463 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.58ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 888 IncrementalHoareTripleChecker+Unchecked, 5213.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:19,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 7463 Invalid, 2010 Unknown, 0 Unchecked, 21.58ms Time], IncrementalHoareTripleChecker [45 Valid, 1077 Invalid, 0 Unknown, 888 Unchecked, 5213.14ms Time] [2021-11-13 18:27:19,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2021-11-13 18:27:19,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2018. [2021-11-13 18:27:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1157 states have (on average 1.8452895419187554) internal successors, (2135), 2006 states have internal predecessors, (2135), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:27:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3148 transitions. [2021-11-13 18:27:19,255 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3148 transitions. Word has length 64 [2021-11-13 18:27:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:19,256 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 3148 transitions. [2021-11-13 18:27:19,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-11-13 18:27:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3148 transitions. [2021-11-13 18:27:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:27:19,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:19,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:19,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:19,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:19,471 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1941954499, now seen corresponding path program 1 times [2021-11-13 18:27:19,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:19,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112676848] [2021-11-13 18:27:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:19,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:19,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:19,474 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:19,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:27:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:19,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:19,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:19,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:19,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-13 18:27:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:20,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:20,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112676848] [2021-11-13 18:27:20,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112676848] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:20,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:20,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:27:20,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049853718] [2021-11-13 18:27:20,286 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:20,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:20,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:20,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:20,288 INFO L87 Difference]: Start difference. First operand 2018 states and 3148 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-13 18:27:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:21,741 INFO L93 Difference]: Finished difference Result 2016 states and 3146 transitions. [2021-11-13 18:27:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:27:21,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 66 [2021-11-13 18:27:21,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:21,748 INFO L225 Difference]: With dead ends: 2016 [2021-11-13 18:27:21,748 INFO L226 Difference]: Without dead ends: 2016 [2021-11-13 18:27:21,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:21,749 INFO L933 BasicCegarLoop]: 2583 mSDtfsCounter, 1797 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1189.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 4820 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.73ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1402.06ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:21,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1801 Valid, 4820 Invalid, 362 Unknown, 0 Unchecked, 9.73ms Time], IncrementalHoareTripleChecker [24 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 1402.06ms Time] [2021-11-13 18:27:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-11-13 18:27:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2016. [2021-11-13 18:27:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1157 states have (on average 1.8435609334485739) internal successors, (2133), 2004 states have internal predecessors, (2133), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:27:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3146 transitions. [2021-11-13 18:27:21,884 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3146 transitions. Word has length 66 [2021-11-13 18:27:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:21,885 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 3146 transitions. [2021-11-13 18:27:21,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-13 18:27:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3146 transitions. [2021-11-13 18:27:21,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:27:21,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:21,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:21,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:22,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:22,102 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash -439724449, now seen corresponding path program 1 times [2021-11-13 18:27:22,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:22,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737048554] [2021-11-13 18:27:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:22,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:22,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:22,104 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:22,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:27:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:22,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:27:22,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:22,487 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 [2021-11-13 18:27:22,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-13 18:27:22,548 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 [2021-11-13 18:27:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:22,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:22,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:22,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737048554] [2021-11-13 18:27:22,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737048554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:22,685 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:22,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:27:22,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230162183] [2021-11-13 18:27:22,685 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:22,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:27:22,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:27:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:27:22,686 INFO L87 Difference]: Start difference. First operand 2016 states and 3146 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2021-11-13 18:27:25,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:25,856 INFO L93 Difference]: Finished difference Result 2015 states and 3145 transitions. [2021-11-13 18:27:25,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:27:25,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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 69 [2021-11-13 18:27:25,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:25,861 INFO L225 Difference]: With dead ends: 2015 [2021-11-13 18:27:25,861 INFO L226 Difference]: Without dead ends: 2015 [2021-11-13 18:27:25,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:27:25,862 INFO L933 BasicCegarLoop]: 2876 mSDtfsCounter, 4 mSDsluCounter, 7386 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2644.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10262 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.43ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3072.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:25,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10262 Invalid, 1248 Unknown, 0 Unchecked, 17.43ms Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 3072.74ms Time] [2021-11-13 18:27:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-11-13 18:27:26,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2015. [2021-11-13 18:27:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1157 states have (on average 1.8426966292134832) internal successors, (2132), 2003 states have internal predecessors, (2132), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:27:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3145 transitions. [2021-11-13 18:27:26,021 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3145 transitions. Word has length 69 [2021-11-13 18:27:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:26,021 INFO L470 AbstractCegarLoop]: Abstraction has 2015 states and 3145 transitions. [2021-11-13 18:27:26,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2021-11-13 18:27:26,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3145 transitions. [2021-11-13 18:27:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:27:26,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:26,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:26,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:26,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:26,238 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:26,239 INFO L85 PathProgramCache]: Analyzing trace with hash -439724448, now seen corresponding path program 1 times [2021-11-13 18:27:26,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:26,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166107848] [2021-11-13 18:27:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:26,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:26,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:26,241 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:26,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:27:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:26,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:27:26,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:26,740 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 [2021-11-13 18:27:26,771 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 [2021-11-13 18:27:26,782 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 [2021-11-13 18:27:26,864 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 [2021-11-13 18:27:26,868 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 [2021-11-13 18:27:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:26,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:27,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:27,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166107848] [2021-11-13 18:27:27,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166107848] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:27,243 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:27,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:27:27,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369369726] [2021-11-13 18:27:27,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:27,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:27:27,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:27:27,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:27:27,245 INFO L87 Difference]: Start difference. First operand 2015 states and 3145 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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) [2021-11-13 18:27:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:36,531 INFO L93 Difference]: Finished difference Result 2014 states and 3144 transitions. [2021-11-13 18:27:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:27:36,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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 69 [2021-11-13 18:27:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:36,538 INFO L225 Difference]: With dead ends: 2014 [2021-11-13 18:27:36,538 INFO L226 Difference]: Without dead ends: 2014 [2021-11-13 18:27:36,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:27:36,539 INFO L933 BasicCegarLoop]: 2876 mSDtfsCounter, 3 mSDsluCounter, 9866 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8220.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12742 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9148.91ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:36,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12742 Invalid, 1641 Unknown, 0 Unchecked, 21.49ms Time], IncrementalHoareTripleChecker [2 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 9148.91ms Time] [2021-11-13 18:27:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-11-13 18:27:36,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2014. [2021-11-13 18:27:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1156 states have (on average 1.8434256055363323) internal successors, (2131), 2002 states have internal predecessors, (2131), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 18:27:36,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 3144 transitions. [2021-11-13 18:27:36,700 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 3144 transitions. Word has length 69 [2021-11-13 18:27:36,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:36,700 INFO L470 AbstractCegarLoop]: Abstraction has 2014 states and 3144 transitions. [2021-11-13 18:27:36,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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) [2021-11-13 18:27:36,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 3144 transitions. [2021-11-13 18:27:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 18:27:36,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:36,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:36,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-13 18:27:36,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:36,937 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1238822906, now seen corresponding path program 1 times [2021-11-13 18:27:36,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:36,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611100502] [2021-11-13 18:27:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:36,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:36,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:36,940 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:36,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:27:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:37,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:37,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:37,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:37,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:37,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611100502] [2021-11-13 18:27:37,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611100502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:37,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:37,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:27:37,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465180469] [2021-11-13 18:27:37,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:37,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:37,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:37,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:37,684 INFO L87 Difference]: Start difference. First operand 2014 states and 3144 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-13 18:27:37,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:37,848 INFO L93 Difference]: Finished difference Result 2024 states and 3157 transitions. [2021-11-13 18:27:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:27:37,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 77 [2021-11-13 18:27:37,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:37,859 INFO L225 Difference]: With dead ends: 2024 [2021-11-13 18:27:37,859 INFO L226 Difference]: Without dead ends: 2024 [2021-11-13 18:27:37,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:27:37,860 INFO L933 BasicCegarLoop]: 2876 mSDtfsCounter, 9 mSDsluCounter, 8617 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11493 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.92ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:37,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 11493 Invalid, 39 Unknown, 0 Unchecked, 9.92ms Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 105.43ms Time] [2021-11-13 18:27:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-13 18:27:38,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2024. [2021-11-13 18:27:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 1164 states have (on average 1.8410652920962198) internal successors, (2143), 2011 states have internal predecessors, (2143), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 18:27:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3157 transitions. [2021-11-13 18:27:38,015 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3157 transitions. Word has length 77 [2021-11-13 18:27:38,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:38,016 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 3157 transitions. [2021-11-13 18:27:38,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-13 18:27:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3157 transitions. [2021-11-13 18:27:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 18:27:38,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:38,018 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:38,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:38,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:38,234 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1826990010, now seen corresponding path program 1 times [2021-11-13 18:27:38,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:38,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575101296] [2021-11-13 18:27:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:38,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:38,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:38,236 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:38,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:27:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:38,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:27:38,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:38,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:38,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:38,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575101296] [2021-11-13 18:27:38,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575101296] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:27:38,957 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:27:38,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:27:38,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023387353] [2021-11-13 18:27:38,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:27:38,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:27:38,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:38,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:27:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:27:38,958 INFO L87 Difference]: Start difference. First operand 2024 states and 3157 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-13 18:27:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:39,482 INFO L93 Difference]: Finished difference Result 2038 states and 3175 transitions. [2021-11-13 18:27:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:27:39,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 79 [2021-11-13 18:27:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:39,489 INFO L225 Difference]: With dead ends: 2038 [2021-11-13 18:27:39,489 INFO L226 Difference]: Without dead ends: 2034 [2021-11-13 18:27:39,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:27:39,490 INFO L933 BasicCegarLoop]: 2878 mSDtfsCounter, 26 mSDsluCounter, 17236 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20114 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.64ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 250.97ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:39,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 20114 Invalid, 122 Unknown, 0 Unchecked, 15.64ms Time], IncrementalHoareTripleChecker [17 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 250.97ms Time] [2021-11-13 18:27:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-11-13 18:27:39,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 2030. [2021-11-13 18:27:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 1170 states have (on average 1.8384615384615384) internal successors, (2151), 2017 states have internal predecessors, (2151), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 18:27:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3165 transitions. [2021-11-13 18:27:39,692 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3165 transitions. Word has length 79 [2021-11-13 18:27:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:39,693 INFO L470 AbstractCegarLoop]: Abstraction has 2030 states and 3165 transitions. [2021-11-13 18:27:39,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-13 18:27:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3165 transitions. [2021-11-13 18:27:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 18:27:39,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:39,695 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:39,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:39,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:39,911 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash -278021946, now seen corresponding path program 2 times [2021-11-13 18:27:39,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:39,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741375072] [2021-11-13 18:27:39,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:27:39,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:39,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:39,915 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:39,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:27:40,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:27:40,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:27:40,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:27:40,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:40,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:41,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:41,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741375072] [2021-11-13 18:27:41,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741375072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:27:41,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:27:41,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 18:27:41,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478296676] [2021-11-13 18:27:41,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:27:41,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:27:41,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:27:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:27:41,237 INFO L87 Difference]: Start difference. First operand 2030 states and 3165 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2021-11-13 18:27:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:42,890 INFO L93 Difference]: Finished difference Result 2058 states and 3203 transitions. [2021-11-13 18:27:42,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:27:42,891 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 83 [2021-11-13 18:27:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:42,898 INFO L225 Difference]: With dead ends: 2058 [2021-11-13 18:27:42,899 INFO L226 Difference]: Without dead ends: 2054 [2021-11-13 18:27:42,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 18:27:42,901 INFO L933 BasicCegarLoop]: 2882 mSDtfsCounter, 89 mSDsluCounter, 20149 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 567.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 23031 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.79ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 643.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:42,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 23031 Invalid, 356 Unknown, 0 Unchecked, 24.79ms Time], IncrementalHoareTripleChecker [55 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 643.40ms Time] [2021-11-13 18:27:42,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2021-11-13 18:27:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2042. [2021-11-13 18:27:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 1182 states have (on average 1.8333333333333333) internal successors, (2167), 2029 states have internal predecessors, (2167), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 18:27:43,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3181 transitions. [2021-11-13 18:27:43,080 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3181 transitions. Word has length 83 [2021-11-13 18:27:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:43,080 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 3181 transitions. [2021-11-13 18:27:43,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2021-11-13 18:27:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3181 transitions. [2021-11-13 18:27:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 18:27:43,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:43,082 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:43,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-13 18:27:43,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:43,303 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:43,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1598536134, now seen corresponding path program 3 times [2021-11-13 18:27:43,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:43,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305377956] [2021-11-13 18:27:43,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:27:43,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:43,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:43,305 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:43,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 18:27:44,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:27:44,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:27:44,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:27:44,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:44,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:46,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:46,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305377956] [2021-11-13 18:27:46,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305377956] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:27:46,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:27:46,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 18:27:46,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003107862] [2021-11-13 18:27:46,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:27:46,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 18:27:46,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:46,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 18:27:46,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 18:27:46,740 INFO L87 Difference]: Start difference. First operand 2042 states and 3181 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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) [2021-11-13 18:27:55,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:55,558 INFO L93 Difference]: Finished difference Result 2098 states and 3265 transitions. [2021-11-13 18:27:55,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 18:27:55,558 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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 91 [2021-11-13 18:27:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:55,565 INFO L225 Difference]: With dead ends: 2098 [2021-11-13 18:27:55,566 INFO L226 Difference]: Without dead ends: 2092 [2021-11-13 18:27:55,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 18:27:55,603 INFO L933 BasicCegarLoop]: 2889 mSDtfsCounter, 211 mSDsluCounter, 57623 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2361.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 60512 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.05ms SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2676.91ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:55,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 60512 Invalid, 1506 Unknown, 0 Unchecked, 42.05ms Time], IncrementalHoareTripleChecker [179 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 2676.91ms Time] [2021-11-13 18:27:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2021-11-13 18:27:55,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2066. [2021-11-13 18:27:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 1206 states have (on average 1.8225538971807629) internal successors, (2198), 2053 states have internal predecessors, (2198), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 18:27:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 3212 transitions. [2021-11-13 18:27:55,777 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 3212 transitions. Word has length 91 [2021-11-13 18:27:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:55,778 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 3212 transitions. [2021-11-13 18:27:55,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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) [2021-11-13 18:27:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 3212 transitions. [2021-11-13 18:27:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 18:27:55,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:55,780 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:55,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:55,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:55,995 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:27:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1085752378, now seen corresponding path program 4 times [2021-11-13 18:27:55,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:55,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772585352] [2021-11-13 18:27:55,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:27:55,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:55,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:55,997 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:55,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 18:27:56,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:27:56,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:27:56,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:27:56,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:57,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:01,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:01,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772585352] [2021-11-13 18:28:01,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772585352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:28:01,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:28:01,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 18:28:01,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691786171] [2021-11-13 18:28:01,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:28:01,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:28:01,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:01,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:28:01,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:28:01,960 INFO L87 Difference]: Start difference. First operand 2066 states and 3212 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-11-13 18:28:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:17,636 INFO L93 Difference]: Finished difference Result 2158 states and 3332 transitions. [2021-11-13 18:28:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 18:28:17,640 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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 107 [2021-11-13 18:28:17,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:17,647 INFO L225 Difference]: With dead ends: 2158 [2021-11-13 18:28:17,647 INFO L226 Difference]: Without dead ends: 2154 [2021-11-13 18:28:17,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 18:28:17,656 INFO L933 BasicCegarLoop]: 2905 mSDtfsCounter, 246 mSDsluCounter, 92806 mSDsCounter, 0 mSdLazyCounter, 4066 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7064.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 95711 SdHoareTripleChecker+Invalid, 4527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.44ms SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 4066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8049.30ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:17,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 95711 Invalid, 4527 Unknown, 0 Unchecked, 87.44ms Time], IncrementalHoareTripleChecker [461 Valid, 4066 Invalid, 0 Unknown, 0 Unchecked, 8049.30ms Time] [2021-11-13 18:28:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-11-13 18:28:17,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2096. [2021-11-13 18:28:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1236 states have (on average 1.8155339805825244) internal successors, (2244), 2083 states have internal predecessors, (2244), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 18:28:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3258 transitions. [2021-11-13 18:28:17,902 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3258 transitions. Word has length 107 [2021-11-13 18:28:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:17,903 INFO L470 AbstractCegarLoop]: Abstraction has 2096 states and 3258 transitions. [2021-11-13 18:28:17,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-11-13 18:28:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3258 transitions. [2021-11-13 18:28:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 18:28:17,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:17,906 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:17,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:18,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:18,125 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:28:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:18,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2058343814, now seen corresponding path program 5 times [2021-11-13 18:28:18,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:18,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777886858] [2021-11-13 18:28:18,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:28:18,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:18,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:18,129 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:18,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24ea5e0-7af0-4fa0-a941-b54af5034d10/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 18:28:19,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 18:28:19,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:28:19,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 18:28:19,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:19,513 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 [2021-11-13 18:28:19,751 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 18:28:19,751 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 [2021-11-13 18:28:19,805 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 26 treesize of output 22 [2021-11-13 18:28:19,994 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 36 treesize of output 24