./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.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_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/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_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/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_e8200468-4d68-4143-a1a1-03925f727a4f/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 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:38:29,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:38:29,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:38:29,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:38:29,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:38:29,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:38:29,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:38:29,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:38:29,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:38:29,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:38:29,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:38:29,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:38:29,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:38:29,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:38:29,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:38:29,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:38:29,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:38:29,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:38:29,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:38:29,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:38:29,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:38:29,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:38:29,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:38:29,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:38:29,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:38:29,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:38:29,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:38:29,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:38:29,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:38:29,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:38:29,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:38:29,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:38:29,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:38:29,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:38:29,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:38:29,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:38:29,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:38:29,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:38:29,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:38:29,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:38:29,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:38:29,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:38:29,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:38:29,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:38:29,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:38:29,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:38:29,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:38:29,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:38:29,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:38:29,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:38:29,426 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:38:29,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:38:29,427 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:38:29,427 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:38:29,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:38:29,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:38:29,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:38:29,428 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:38:29,428 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:38:29,428 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:38:29,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:38:29,429 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:38:29,429 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:38:29,429 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:38:29,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:38:29,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:38:29,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:38:29,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:38:29,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:38:29,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:38:29,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:38:29,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:38:29,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:38:29,432 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_e8200468-4d68-4143-a1a1-03925f727a4f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2021-11-13 18:38:29,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:38:29,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:38:29,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:38:29,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:38:29,742 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:38:29,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-11-13 18:38:29,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data/98742a64d/c36d143e3d514c2c9c47a6b63dd00ce9/FLAG487423ef4 [2021-11-13 18:38:30,370 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:38:30,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-11-13 18:38:30,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data/98742a64d/c36d143e3d514c2c9c47a6b63dd00ce9/FLAG487423ef4 [2021-11-13 18:38:30,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data/98742a64d/c36d143e3d514c2c9c47a6b63dd00ce9 [2021-11-13 18:38:30,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:38:30,630 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:38:30,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:38:30,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:38:30,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:38:30,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:38:30" (1/1) ... [2021-11-13 18:38:30,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87577b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:30, skipping insertion in model container [2021-11-13 18:38:30,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:38:30" (1/1) ... [2021-11-13 18:38:30,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:38:30,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:38:31,149 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_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-11-13 18:38:31,264 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_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-11-13 18:38:31,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:38:31,284 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 18:38:31,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62834bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:31, skipping insertion in model container [2021-11-13 18:38:31,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:38:31,286 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:38:31,288 INFO L158 Benchmark]: Toolchain (without parser) took 656.32ms. Allocated memory is still 109.1MB. Free memory was 69.5MB in the beginning and 72.8MB in the end (delta: -3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:38:31,288 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 109.1MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:38:31,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 651.67ms. Allocated memory is still 109.1MB. Free memory was 69.3MB in the beginning and 72.8MB in the end (delta: -3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:38:31,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 109.1MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 651.67ms. Allocated memory is still 109.1MB. Free memory was 69.3MB in the beginning and 72.8MB in the end (delta: -3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/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_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/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_e8200468-4d68-4143-a1a1-03925f727a4f/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 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:38:33,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:38:33,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:38:33,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:38:33,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:38:33,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:38:33,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:38:33,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:38:33,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:38:33,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:38:33,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:38:33,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:38:33,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:38:33,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:38:33,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:38:33,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:38:33,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:38:33,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:38:33,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:38:33,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:38:33,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:38:33,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:38:33,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:38:33,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:38:33,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:38:33,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:38:33,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:38:33,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:38:33,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:38:33,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:38:33,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:38:33,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:38:33,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:38:33,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:38:33,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:38:33,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:38:33,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:38:33,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:38:33,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:38:33,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:38:33,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:38:33,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:38:33,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:38:33,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:38:33,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:38:33,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:38:33,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:38:33,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:38:33,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:38:33,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:38:33,655 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:38:33,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:38:33,655 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:38:33,655 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:38:33,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:38:33,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:38:33,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:38:33,656 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:38:33,656 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:38:33,657 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:38:33,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:38:33,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:38:33,657 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:38:33,657 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:38:33,658 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:38:33,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:38:33,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:38:33,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:38:33,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:38:33,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:38:33,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:38:33,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:38:33,660 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:38:33,660 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:38:33,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:38:33,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:38:33,661 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_e8200468-4d68-4143-a1a1-03925f727a4f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2021-11-13 18:38:34,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:38:34,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:38:34,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:38:34,095 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:38:34,096 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:38:34,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-11-13 18:38:34,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data/7e27b69f8/cd85835e1e25497ba62f55f5d5846bdb/FLAGbf4e70245 [2021-11-13 18:38:34,786 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:38:34,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-11-13 18:38:34,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data/7e27b69f8/cd85835e1e25497ba62f55f5d5846bdb/FLAGbf4e70245 [2021-11-13 18:38:35,010 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/data/7e27b69f8/cd85835e1e25497ba62f55f5d5846bdb [2021-11-13 18:38:35,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:38:35,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:38:35,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:38:35,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:38:35,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:38:35,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:38:35" (1/1) ... [2021-11-13 18:38:35,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614999b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:35, skipping insertion in model container [2021-11-13 18:38:35,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:38:35" (1/1) ... [2021-11-13 18:38:35,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:38:35,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:38:35,534 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_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-11-13 18:38:35,712 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_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-11-13 18:38:35,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:38:35,730 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:38:35,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:38:35,770 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_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-11-13 18:38:35,875 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_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-11-13 18:38:35,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:38:35,886 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:38:35,938 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_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-11-13 18:38:36,037 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_e8200468-4d68-4143-a1a1-03925f727a4f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-11-13 18:38:36,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:38:36,102 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:38:36,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36 WrapperNode [2021-11-13 18:38:36,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:38:36,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:38:36,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:38:36,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:38:36,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36" (1/1) ... [2021-11-13 18:38:36,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36" (1/1) ... [2021-11-13 18:38:36,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36" (1/1) ... [2021-11-13 18:38:36,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36" (1/1) ... [2021-11-13 18:38:36,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36" (1/1) ... [2021-11-13 18:38:36,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36" (1/1) ... [2021-11-13 18:38:36,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36" (1/1) ... [2021-11-13 18:38:36,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:38:36,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:38:36,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:38:36,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:38:36,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36" (1/1) ... [2021-11-13 18:38:36,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:38:36,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:38:36,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:38:36,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:38:36,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:38:36,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:38:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:38:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:38:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:38:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:38:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:38:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:38:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:38:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:38:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-13 18:38:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:38:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:38:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:38:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 18:38:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 18:38:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:38:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:38:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 18:38:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 18:38:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:38:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 18:38:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 18:38:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 18:38:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:38:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 18:38:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 18:38:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 18:38:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 18:38:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 18:38:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 18:38:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 18:38:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 18:38:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 18:38:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 18:38:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 18:38:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 18:38:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 18:38:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 18:38:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 18:38:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 18:38:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 18:38:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 18:38:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 18:38:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 18:38:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 18:38:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 18:38:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 18:38:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 18:38:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 18:38:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 18:38:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 18:38:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 18:38:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 18:38:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 18:38:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 18:38:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 18:38:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 18:38:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 18:38:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 18:38:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 18:38:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 18:38:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 18:38:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 18:38:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:38:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:38:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:38:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:38:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:38:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:38:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:38:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:38:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:38:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:38:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:38:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:38:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:38:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:38:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:38:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:38:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:38:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:38:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:38:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:38:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:38:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:38:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:38:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:38:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:38:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:38:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:38:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:38:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:38:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:38:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:38:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:38:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:38:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:38:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:38:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:38:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:38:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:38:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:38:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:38:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:38:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:38:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:38:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:38:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:38:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:38:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:38:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:38:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:38:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:38:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:38:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:38:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:38:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:38:36,435 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:38:36,435 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:38:36,435 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:38:36,436 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:38:36,436 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:38:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:38:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:38:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:38:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:38:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:38:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:38:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:38:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:38:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:38:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:38:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:38:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:38:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:38:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:38:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:38:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:38:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:38:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:38:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:38:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:38:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:38:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:38:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:38:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:38:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:38:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:38:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:38:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:38:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:38:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:38:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:38:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:38:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:38:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:38:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:38:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:38:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:38:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:38:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:38:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:38:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:38:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:38:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:38:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:38:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:38:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:38:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:38:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:38:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:38:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:38:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:38:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:38:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:38:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:38:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-13 18:38:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:38:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:38:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:38:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:38:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:38:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:38:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:38:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:38:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:38:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:38:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:38:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:38:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:38:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:38:37,027 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:38:41,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:38:41,858 INFO L299 CfgBuilder]: Removed 62 assume(true) statements. [2021-11-13 18:38:41,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:38:41 BoogieIcfgContainer [2021-11-13 18:38:41,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:38:41,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:38:41,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:38:41,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:38:41,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:38:35" (1/3) ... [2021-11-13 18:38:41,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56be70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:38:41, skipping insertion in model container [2021-11-13 18:38:41,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:36" (2/3) ... [2021-11-13 18:38:41,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56be70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:38:41, skipping insertion in model container [2021-11-13 18:38:41,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:38:41" (3/3) ... [2021-11-13 18:38:41,870 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-1.i [2021-11-13 18:38:41,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:38:41,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-13 18:38:41,920 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:38:41,927 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 18:38:41,927 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-13 18:38:41,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:38:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:38:42,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:42,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:38:42,006 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:38:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash -292335135, now seen corresponding path program 1 times [2021-11-13 18:38:42,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:38:42,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994366711] [2021-11-13 18:38:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:42,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:38:42,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:38:42,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:38:42,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:38:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:42,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:38:42,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:38:42,358 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 18:38:42,368 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 18:38:42,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:38:42,401 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 18:38:42,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:38:42,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994366711] [2021-11-13 18:38:42,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994366711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:42,403 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:42,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:38:42,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918002830] [2021-11-13 18:38:42,406 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:42,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:38:42,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:38:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:38:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:38:42,444 INFO L87 Difference]: Start difference. First operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) 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 18:38:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:44,440 INFO L93 Difference]: Finished difference Result 1105 states and 1191 transitions. [2021-11-13 18:38:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:38:44,443 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 18:38:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:44,468 INFO L225 Difference]: With dead ends: 1105 [2021-11-13 18:38:44,468 INFO L226 Difference]: Without dead ends: 1102 [2021-11-13 18:38:44,469 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 18:38:44,473 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 971 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1542.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.59ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1874.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:44,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 835 Invalid, 565 Unknown, 0 Unchecked, 21.59ms Time], IncrementalHoareTripleChecker [16 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1874.31ms Time] [2021-11-13 18:38:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-13 18:38:44,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1090. [2021-11-13 18:38:44,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 544 states have (on average 2.088235294117647) internal successors, (1136), 1077 states have internal predecessors, (1136), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:38:44,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1181 transitions. [2021-11-13 18:38:44,620 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1181 transitions. Word has length 7 [2021-11-13 18:38:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:44,620 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1181 transitions. [2021-11-13 18:38:44,621 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 18:38:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1181 transitions. [2021-11-13 18:38:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:38:44,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:44,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:38:44,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:38:44,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:38:44,837 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:38:44,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash -292335134, now seen corresponding path program 1 times [2021-11-13 18:38:44,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:38:44,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304820054] [2021-11-13 18:38:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:44,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:38:44,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:38:44,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:38:44,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:38:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:45,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:38:45,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:38:45,093 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 18:38:45,117 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 18:38:45,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:38:45,193 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 18:38:45,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:38:45,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304820054] [2021-11-13 18:38:45,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304820054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:45,194 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:45,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:38:45,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620053751] [2021-11-13 18:38:45,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:45,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:38:45,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:38:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:38:45,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:38:45,197 INFO L87 Difference]: Start difference. First operand 1090 states and 1181 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 18:38:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:50,110 INFO L93 Difference]: Finished difference Result 1566 states and 1691 transitions. [2021-11-13 18:38:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:38:50,110 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 18:38:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:50,120 INFO L225 Difference]: With dead ends: 1566 [2021-11-13 18:38:50,120 INFO L226 Difference]: Without dead ends: 1566 [2021-11-13 18:38:50,120 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 18:38:50,122 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 1557 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4221.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.95ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4816.58ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:50,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1560 Valid, 1520 Invalid, 905 Unknown, 0 Unchecked, 19.95ms Time], IncrementalHoareTripleChecker [19 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 4816.58ms Time] [2021-11-13 18:38:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-11-13 18:38:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1129. [2021-11-13 18:38:50,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 591 states have (on average 2.0676818950930627) internal successors, (1222), 1115 states have internal predecessors, (1222), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:38:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1269 transitions. [2021-11-13 18:38:50,164 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1269 transitions. Word has length 7 [2021-11-13 18:38:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:50,164 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1269 transitions. [2021-11-13 18:38:50,165 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 18:38:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1269 transitions. [2021-11-13 18:38:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:38:50,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:50,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:38:50,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:38:50,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:38:50,377 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:38:50,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:50,378 INFO L85 PathProgramCache]: Analyzing trace with hash -184131353, now seen corresponding path program 1 times [2021-11-13 18:38:50,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:38:50,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161039739] [2021-11-13 18:38:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:50,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:38:50,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:38:50,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:38:50,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:38:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:50,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:38:50,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:38:50,620 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 18:38:50,657 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 18:38:50,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:38:50,763 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 18:38:50,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:38:50,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161039739] [2021-11-13 18:38:50,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161039739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:50,764 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:50,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:38:50,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347591773] [2021-11-13 18:38:50,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:50,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:38:50,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:38:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:38:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:38:50,766 INFO L87 Difference]: Start difference. First operand 1129 states and 1269 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 18:38:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:55,694 INFO L93 Difference]: Finished difference Result 1565 states and 1690 transitions. [2021-11-13 18:38:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:38:55,696 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 18:38:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:55,705 INFO L225 Difference]: With dead ends: 1565 [2021-11-13 18:38:55,705 INFO L226 Difference]: Without dead ends: 1565 [2021-11-13 18:38:55,706 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 18:38:55,707 INFO L933 BasicCegarLoop]: 1210 mSDtfsCounter, 752 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4255.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.20ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4849.67ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:55,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2174 Invalid, 1275 Unknown, 0 Unchecked, 13.20ms Time], IncrementalHoareTripleChecker [16 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 4849.67ms Time] [2021-11-13 18:38:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-11-13 18:38:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1327. [2021-11-13 18:38:55,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 798 states have (on average 2.0426065162907268) internal successors, (1630), 1312 states have internal predecessors, (1630), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:38:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1679 transitions. [2021-11-13 18:38:55,757 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1679 transitions. Word has length 12 [2021-11-13 18:38:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:55,757 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1679 transitions. [2021-11-13 18:38:55,758 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 18:38:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1679 transitions. [2021-11-13 18:38:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:38:55,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:55,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:38:55,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 18:38:55,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:38:55,974 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:38:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:55,975 INFO L85 PathProgramCache]: Analyzing trace with hash -184131354, now seen corresponding path program 1 times [2021-11-13 18:38:55,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:38:55,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669064184] [2021-11-13 18:38:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:55,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:38:55,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:38:55,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:38:55,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:38:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:56,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:38:56,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:38:56,190 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 18:38:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:38:56,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:38:56,247 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 18:38:56,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:38:56,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669064184] [2021-11-13 18:38:56,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669064184] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:56,247 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:56,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:38:56,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607954757] [2021-11-13 18:38:56,248 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:56,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:38:56,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:38:56,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:38:56,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:38:56,249 INFO L87 Difference]: Start difference. First operand 1327 states and 1679 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 18:38:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:58,465 INFO L93 Difference]: Finished difference Result 1656 states and 2033 transitions. [2021-11-13 18:38:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:38:58,465 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 18:38:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:58,475 INFO L225 Difference]: With dead ends: 1656 [2021-11-13 18:38:58,475 INFO L226 Difference]: Without dead ends: 1656 [2021-11-13 18:38:58,476 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 18:38:58,477 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 980 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1813.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.28ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2152.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:58,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1308 Invalid, 760 Unknown, 0 Unchecked, 10.28ms Time], IncrementalHoareTripleChecker [54 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 2152.40ms Time] [2021-11-13 18:38:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-13 18:38:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1280. [2021-11-13 18:38:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9774436090225564) internal successors, (1578), 1265 states have internal predecessors, (1578), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:38:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1627 transitions. [2021-11-13 18:38:58,518 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1627 transitions. Word has length 12 [2021-11-13 18:38:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:58,518 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1627 transitions. [2021-11-13 18:38:58,518 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 18:38:58,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1627 transitions. [2021-11-13 18:38:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 18:38:58,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:58,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:38:58,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:38:58,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:38:58,731 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:38:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash -42398436, now seen corresponding path program 1 times [2021-11-13 18:38:58,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:38:58,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496949302] [2021-11-13 18:38:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:58,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:38:58,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:38:58,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:38:58,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:38:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:58,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:38:58,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:38:59,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:38:59,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:38:59,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:38:59,091 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 18:38:59,092 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 18:38:59,160 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 18:38:59,160 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 18:38:59,186 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 18:38:59,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:38:59,261 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 18:38:59,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:38:59,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496949302] [2021-11-13 18:38:59,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496949302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:59,262 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:59,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:38:59,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60955077] [2021-11-13 18:38:59,263 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:59,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:38:59,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:38:59,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:38:59,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:38:59,264 INFO L87 Difference]: Start difference. First operand 1280 states and 1627 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:39:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:01,171 INFO L93 Difference]: Finished difference Result 1790 states and 2346 transitions. [2021-11-13 18:39:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:39:01,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-13 18:39:01,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:01,183 INFO L225 Difference]: With dead ends: 1790 [2021-11-13 18:39:01,183 INFO L226 Difference]: Without dead ends: 1790 [2021-11-13 18:39:01,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 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 18:39:01,184 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 356 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1538.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.53ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1832.73ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:01,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 3995 Invalid, 415 Unknown, 0 Unchecked, 8.53ms Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1832.73ms Time] [2021-11-13 18:39:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-11-13 18:39:01,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1280. [2021-11-13 18:39:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9761904761904763) internal successors, (1577), 1265 states have internal predecessors, (1577), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1626 transitions. [2021-11-13 18:39:01,226 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1626 transitions. Word has length 14 [2021-11-13 18:39:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:01,226 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1626 transitions. [2021-11-13 18:39:01,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:39:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1626 transitions. [2021-11-13 18:39:01,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 18:39:01,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:01,228 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 18:39:01,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:01,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:01,440 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1725470958, now seen corresponding path program 1 times [2021-11-13 18:39:01,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:01,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322979644] [2021-11-13 18:39:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:01,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:01,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:01,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:01,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:39:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:01,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:39:01,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:01,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:01,742 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 18:39:01,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:01,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322979644] [2021-11-13 18:39:01,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322979644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:01,743 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:01,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:39:01,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324546375] [2021-11-13 18:39:01,744 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:01,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:39:01,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:01,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:39:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:39:01,745 INFO L87 Difference]: Start difference. First operand 1280 states and 1626 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 18:39:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:01,793 INFO L93 Difference]: Finished difference Result 1247 states and 1592 transitions. [2021-11-13 18:39:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:39:01,793 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 18:39:01,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:01,801 INFO L225 Difference]: With dead ends: 1247 [2021-11-13 18:39:01,801 INFO L226 Difference]: Without dead ends: 1247 [2021-11-13 18:39:01,801 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 18:39:01,802 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1932 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:01,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1937 Valid, 1155 Invalid, 17 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 26.98ms Time] [2021-11-13 18:39:01,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-13 18:39:01,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1238. [2021-11-13 18:39:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 780 states have (on average 1.9666666666666666) internal successors, (1534), 1223 states have internal predecessors, (1534), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1583 transitions. [2021-11-13 18:39:01,837 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1583 transitions. Word has length 22 [2021-11-13 18:39:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:01,838 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1583 transitions. [2021-11-13 18:39:01,838 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 18:39:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1583 transitions. [2021-11-13 18:39:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:39:01,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:01,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:39:01,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:02,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:02,055 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash -320213556, now seen corresponding path program 1 times [2021-11-13 18:39:02,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:02,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415633307] [2021-11-13 18:39:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:02,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:02,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:02,056 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:02,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:39:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:02,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:39:02,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:02,312 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 18:39:02,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:02,371 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 18:39:02,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:02,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415633307] [2021-11-13 18:39:02,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415633307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:02,371 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:02,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:39:02,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25399305] [2021-11-13 18:39:02,372 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:02,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:39:02,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:02,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:39:02,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:39:02,373 INFO L87 Difference]: Start difference. First operand 1238 states and 1583 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 18:39:02,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:02,472 INFO L93 Difference]: Finished difference Result 1226 states and 1564 transitions. [2021-11-13 18:39:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:39:02,472 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 18:39:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:02,480 INFO L225 Difference]: With dead ends: 1226 [2021-11-13 18:39:02,480 INFO L226 Difference]: Without dead ends: 1226 [2021-11-13 18:39:02,480 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 18:39:02,481 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 1864 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.62ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.63ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:02,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1869 Valid, 2117 Invalid, 79 Unknown, 0 Unchecked, 6.62ms Time], IncrementalHoareTripleChecker [47 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 63.63ms Time] [2021-11-13 18:39:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-11-13 18:39:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1216. [2021-11-13 18:39:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 772 states have (on average 1.9494818652849741) internal successors, (1505), 1201 states have internal predecessors, (1505), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1554 transitions. [2021-11-13 18:39:02,515 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1554 transitions. Word has length 24 [2021-11-13 18:39:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:02,516 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1554 transitions. [2021-11-13 18:39:02,516 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 18:39:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1554 transitions. [2021-11-13 18:39:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:39:02,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:02,518 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 18:39:02,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:02,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:02,731 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:02,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:02,732 INFO L85 PathProgramCache]: Analyzing trace with hash 44817114, now seen corresponding path program 1 times [2021-11-13 18:39:02,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:02,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886201511] [2021-11-13 18:39:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:02,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:02,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:02,734 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:02,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:39:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:02,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:39:02,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:02,968 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 18:39:03,111 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 18:39:03,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:03,251 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 18:39:03,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:03,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886201511] [2021-11-13 18:39:03,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886201511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:03,252 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:03,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:39:03,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586745180] [2021-11-13 18:39:03,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:03,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:39:03,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:03,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:39:03,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:39:03,255 INFO L87 Difference]: Start difference. First operand 1216 states and 1554 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 18:39:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:05,170 INFO L93 Difference]: Finished difference Result 1806 states and 2377 transitions. [2021-11-13 18:39:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:39:05,176 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 18:39:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:05,186 INFO L225 Difference]: With dead ends: 1806 [2021-11-13 18:39:05,198 INFO L226 Difference]: Without dead ends: 1806 [2021-11-13 18:39:05,198 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 18:39:05,199 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 2108 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1575.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1866.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:05,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2110 Valid, 1011 Invalid, 786 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [23 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 1866.23ms Time] [2021-11-13 18:39:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-11-13 18:39:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1212. [2021-11-13 18:39:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 772 states have (on average 1.944300518134715) internal successors, (1501), 1197 states have internal predecessors, (1501), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1550 transitions. [2021-11-13 18:39:05,237 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1550 transitions. Word has length 38 [2021-11-13 18:39:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:05,239 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1550 transitions. [2021-11-13 18:39:05,239 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 18:39:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1550 transitions. [2021-11-13 18:39:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:39:05,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:05,243 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 18:39:05,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:05,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:05,456 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash 44817115, now seen corresponding path program 1 times [2021-11-13 18:39:05,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:05,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184814411] [2021-11-13 18:39:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:05,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:05,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:05,460 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:05,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:39:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:05,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:39:05,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:05,705 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 18:39:05,988 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 18:39:05,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:06,463 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 18:39:06,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:06,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184814411] [2021-11-13 18:39:06,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184814411] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:06,464 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:06,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:39:06,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313453369] [2021-11-13 18:39:06,465 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:06,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:39:06,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:39:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:39:06,466 INFO L87 Difference]: Start difference. First operand 1212 states and 1550 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 18:39:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:13,256 INFO L93 Difference]: Finished difference Result 1453 states and 1568 transitions. [2021-11-13 18:39:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:39:13,259 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 18:39:13,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:13,267 INFO L225 Difference]: With dead ends: 1453 [2021-11-13 18:39:13,267 INFO L226 Difference]: Without dead ends: 1453 [2021-11-13 18:39:13,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:39:13,268 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1848 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5877.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.19ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6670.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:13,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 2183 Invalid, 1590 Unknown, 0 Unchecked, 11.19ms Time], IncrementalHoareTripleChecker [17 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 6670.35ms Time] [2021-11-13 18:39:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-13 18:39:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1208. [2021-11-13 18:39:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 772 states have (on average 1.939119170984456) internal successors, (1497), 1193 states have internal predecessors, (1497), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:13,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1546 transitions. [2021-11-13 18:39:13,301 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1546 transitions. Word has length 38 [2021-11-13 18:39:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:13,301 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1546 transitions. [2021-11-13 18:39:13,301 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 18:39:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1546 transitions. [2021-11-13 18:39:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-13 18:39:13,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:13,303 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] [2021-11-13 18:39:13,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:13,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:13,515 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1384262345, now seen corresponding path program 1 times [2021-11-13 18:39:13,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:13,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140822526] [2021-11-13 18:39:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:13,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:13,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:13,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:13,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:39:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:13,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:39:13,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:13,876 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 18:39:13,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:13,998 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 18:39:13,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:13,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140822526] [2021-11-13 18:39:13,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140822526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:13,999 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:13,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:39:13,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242269057] [2021-11-13 18:39:13,999 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:14,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:39:14,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:39:14,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:39:14,001 INFO L87 Difference]: Start difference. First operand 1208 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 18:39:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:14,066 INFO L93 Difference]: Finished difference Result 1211 states and 1545 transitions. [2021-11-13 18:39:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:39:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 53 [2021-11-13 18:39:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:14,074 INFO L225 Difference]: With dead ends: 1211 [2021-11-13 18:39:14,074 INFO L226 Difference]: Without dead ends: 1211 [2021-11-13 18:39:14,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 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 18:39:14,075 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 913 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.04ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:14,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2095 Invalid, 41 Unknown, 0 Unchecked, 8.04ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 34.59ms Time] [2021-11-13 18:39:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-13 18:39:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1202. [2021-11-13 18:39:14,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 766 states have (on average 1.941253263707572) internal successors, (1487), 1187 states have internal predecessors, (1487), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1536 transitions. [2021-11-13 18:39:14,110 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1536 transitions. Word has length 53 [2021-11-13 18:39:14,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:14,112 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 1536 transitions. [2021-11-13 18:39:14,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 18:39:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1536 transitions. [2021-11-13 18:39:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:39:14,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:14,116 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] [2021-11-13 18:39:14,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:14,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:14,329 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:14,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:14,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1870144277, now seen corresponding path program 1 times [2021-11-13 18:39:14,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:14,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832409526] [2021-11-13 18:39:14,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:14,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:14,331 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:14,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:39:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:14,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:39:14,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:14,997 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 18:39:14,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:15,402 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 18:39:15,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:15,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832409526] [2021-11-13 18:39:15,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832409526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:15,403 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:15,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:39:15,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75727582] [2021-11-13 18:39:15,403 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:15,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:39:15,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:15,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:39:15,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:39:15,404 INFO L87 Difference]: Start difference. First operand 1202 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:39:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:15,690 INFO L93 Difference]: Finished difference Result 1742 states and 2271 transitions. [2021-11-13 18:39:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:39:15,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 61 [2021-11-13 18:39:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:15,716 INFO L225 Difference]: With dead ends: 1742 [2021-11-13 18:39:15,716 INFO L226 Difference]: Without dead ends: 1742 [2021-11-13 18:39:15,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 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 18:39:15,717 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 407 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 225.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 266.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:15,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2085 Invalid, 110 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 266.89ms Time] [2021-11-13 18:39:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-11-13 18:39:15,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1563. [2021-11-13 18:39:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1125 states have (on average 1.9244444444444444) internal successors, (2165), 1546 states have internal predecessors, (2165), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-13 18:39:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2218 transitions. [2021-11-13 18:39:15,754 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2218 transitions. Word has length 61 [2021-11-13 18:39:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:15,755 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 2218 transitions. [2021-11-13 18:39:15,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:39:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2218 transitions. [2021-11-13 18:39:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:39:15,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:15,756 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 18:39:15,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:15,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:15,971 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:15,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash 740278757, now seen corresponding path program 1 times [2021-11-13 18:39:15,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:15,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399912783] [2021-11-13 18:39:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:15,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:15,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:15,972 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:15,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:39:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:16,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:39:16,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:16,334 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 18:39:16,341 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 18:39:17,020 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:39:17,020 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 25 treesize of output 27 [2021-11-13 18:39:17,039 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:39:17,040 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 24 treesize of output 20 [2021-11-13 18:39:17,080 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 18:39:17,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:21,980 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 18:39:21,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:21,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399912783] [2021-11-13 18:39:21,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399912783] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:21,981 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:21,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:39:21,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509039143] [2021-11-13 18:39:21,982 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:21,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:39:21,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:21,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:39:21,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:39:21,983 INFO L87 Difference]: Start difference. First operand 1563 states and 2218 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 18:39:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:27,948 INFO L93 Difference]: Finished difference Result 2168 states and 2916 transitions. [2021-11-13 18:39:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:39:27,949 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 18:39:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:27,960 INFO L225 Difference]: With dead ends: 2168 [2021-11-13 18:39:27,960 INFO L226 Difference]: Without dead ends: 2168 [2021-11-13 18:39:27,961 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 18:39:27,962 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1500 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5047.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.75ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 5866.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:27,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1625 Invalid, 2548 Unknown, 0 Unchecked, 16.75ms Time], IncrementalHoareTripleChecker [57 Valid, 1408 Invalid, 0 Unknown, 1083 Unchecked, 5866.03ms Time] [2021-11-13 18:39:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2021-11-13 18:39:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1175. [2021-11-13 18:39:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 773 states have (on average 1.8253557567917205) internal successors, (1411), 1160 states have internal predecessors, (1411), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1460 transitions. [2021-11-13 18:39:28,004 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1460 transitions. Word has length 64 [2021-11-13 18:39:28,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:28,005 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1460 transitions. [2021-11-13 18:39:28,006 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 18:39:28,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1460 transitions. [2021-11-13 18:39:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:39:28,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:28,007 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 18:39:28,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-13 18:39:28,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:28,226 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:28,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:28,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1556673562, now seen corresponding path program 1 times [2021-11-13 18:39:28,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:28,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494366552] [2021-11-13 18:39:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:28,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:28,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:28,228 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:28,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:39:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:28,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:39:28,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:28,749 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 18:39:28,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:28,811 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 18:39:29,126 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 18:39:29,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:29,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494366552] [2021-11-13 18:39:29,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494366552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:29,127 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:29,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:39:29,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262431697] [2021-11-13 18:39:29,128 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:29,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:39:29,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:29,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:39:29,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:39:29,129 INFO L87 Difference]: Start difference. First operand 1175 states and 1460 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 18:39:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:30,992 INFO L93 Difference]: Finished difference Result 1173 states and 1458 transitions. [2021-11-13 18:39:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:39:30,994 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 18:39:30,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:30,999 INFO L225 Difference]: With dead ends: 1173 [2021-11-13 18:39:30,999 INFO L226 Difference]: Without dead ends: 1173 [2021-11-13 18:39:30,999 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 18:39:31,000 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 2550 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1555.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.74ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1833.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:31,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2555 Valid, 807 Invalid, 466 Unknown, 0 Unchecked, 6.74ms Time], IncrementalHoareTripleChecker [24 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 1833.12ms Time] [2021-11-13 18:39:31,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-13 18:39:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-13 18:39:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 773 states have (on average 1.8227684346701165) internal successors, (1409), 1158 states have internal predecessors, (1409), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1458 transitions. [2021-11-13 18:39:31,022 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1458 transitions. Word has length 66 [2021-11-13 18:39:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:31,023 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1458 transitions. [2021-11-13 18:39:31,023 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 18:39:31,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1458 transitions. [2021-11-13 18:39:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:39:31,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:31,024 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 18:39:31,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 18:39:31,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:31,243 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:31,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807298, now seen corresponding path program 1 times [2021-11-13 18:39:31,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:31,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310624299] [2021-11-13 18:39:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:31,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:31,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:31,245 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:31,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:39:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:31,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:39:31,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:31,601 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 18:39:31,616 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 18:39:31,656 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 18:39:31,671 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 18:39:31,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:31,788 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 18:39:31,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:31,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310624299] [2021-11-13 18:39:31,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310624299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:31,789 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:31,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:39:31,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329066978] [2021-11-13 18:39:31,789 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:31,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:39:31,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:31,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:39:31,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:39:31,790 INFO L87 Difference]: Start difference. First operand 1173 states and 1458 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 18:39:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:34,491 INFO L93 Difference]: Finished difference Result 1172 states and 1457 transitions. [2021-11-13 18:39:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:39:34,491 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 18:39:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:34,496 INFO L225 Difference]: With dead ends: 1172 [2021-11-13 18:39:34,496 INFO L226 Difference]: Without dead ends: 1172 [2021-11-13 18:39:34,496 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 18:39:34,497 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 4 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2279.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2641.99ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:34,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2568 Invalid, 1314 Unknown, 0 Unchecked, 7.17ms Time], IncrementalHoareTripleChecker [1 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 2641.99ms Time] [2021-11-13 18:39:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-13 18:39:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-13 18:39:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 773 states have (on average 1.8214747736093144) internal successors, (1408), 1157 states have internal predecessors, (1408), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1457 transitions. [2021-11-13 18:39:34,520 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1457 transitions. Word has length 69 [2021-11-13 18:39:34,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:34,521 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1457 transitions. [2021-11-13 18:39:34,521 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 18:39:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1457 transitions. [2021-11-13 18:39:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:39:34,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:34,522 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 18:39:34,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-13 18:39:34,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:34,736 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:34,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807297, now seen corresponding path program 1 times [2021-11-13 18:39:34,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:34,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384955860] [2021-11-13 18:39:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:34,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:34,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:34,739 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:34,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:39:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:35,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:39:35,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:35,149 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 18:39:35,187 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 18:39:35,197 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 18:39:35,282 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 18:39:35,286 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 18:39:35,314 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 18:39:35,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:35,632 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 18:39:35,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:35,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384955860] [2021-11-13 18:39:35,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384955860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:35,632 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:35,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:39:35,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502567826] [2021-11-13 18:39:35,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:35,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:39:35,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:35,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:39:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:39:35,634 INFO L87 Difference]: Start difference. First operand 1172 states and 1457 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 18:39:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:44,092 INFO L93 Difference]: Finished difference Result 1171 states and 1456 transitions. [2021-11-13 18:39:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:39:44,094 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 18:39:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:44,099 INFO L225 Difference]: With dead ends: 1171 [2021-11-13 18:39:44,099 INFO L226 Difference]: Without dead ends: 1171 [2021-11-13 18:39:44,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:39:44,100 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 3 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7495.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8359.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:44,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3683 Invalid, 2134 Unknown, 0 Unchecked, 12.77ms Time], IncrementalHoareTripleChecker [1 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 8359.27ms Time] [2021-11-13 18:39:44,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-11-13 18:39:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2021-11-13 18:39:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 772 states have (on average 1.822538860103627) internal successors, (1407), 1156 states have internal predecessors, (1407), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:39:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1456 transitions. [2021-11-13 18:39:44,122 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1456 transitions. Word has length 69 [2021-11-13 18:39:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:44,122 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1456 transitions. [2021-11-13 18:39:44,123 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 18:39:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1456 transitions. [2021-11-13 18:39:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 18:39:44,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:44,124 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 18:39:44,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-13 18:39:44,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:44,337 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:44,338 INFO L85 PathProgramCache]: Analyzing trace with hash 178416389, now seen corresponding path program 1 times [2021-11-13 18:39:44,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:44,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998060989] [2021-11-13 18:39:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:44,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:44,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:44,342 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:44,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:39:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:44,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:39:44,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:44,764 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 18:39:44,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:44,916 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 18:39:44,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:44,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998060989] [2021-11-13 18:39:44,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998060989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:44,917 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:44,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:39:44,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193598898] [2021-11-13 18:39:44,917 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:44,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:39:44,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:39:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:39:44,918 INFO L87 Difference]: Start difference. First operand 1171 states and 1456 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 18:39:45,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:45,008 INFO L93 Difference]: Finished difference Result 1181 states and 1469 transitions. [2021-11-13 18:39:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:39:45,017 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 18:39:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:45,024 INFO L225 Difference]: With dead ends: 1181 [2021-11-13 18:39:45,024 INFO L226 Difference]: Without dead ends: 1181 [2021-11-13 18:39:45,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:39:45,025 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 9 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:45,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2902 Invalid, 34 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 59.89ms Time] [2021-11-13 18:39:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-11-13 18:39:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2021-11-13 18:39:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 780 states have (on average 1.8192307692307692) internal successors, (1419), 1165 states have internal predecessors, (1419), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:39:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1469 transitions. [2021-11-13 18:39:45,051 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1469 transitions. Word has length 77 [2021-11-13 18:39:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:45,051 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1469 transitions. [2021-11-13 18:39:45,052 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 18:39:45,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1469 transitions. [2021-11-13 18:39:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 18:39:45,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:45,053 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 18:39:45,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:45,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:45,266 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:45,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1398946491, now seen corresponding path program 1 times [2021-11-13 18:39:45,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:45,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135477380] [2021-11-13 18:39:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:45,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:45,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:45,269 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:45,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:39:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:45,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:39:45,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:45,712 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 18:39:45,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:45,921 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 18:39:45,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:45,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135477380] [2021-11-13 18:39:45,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135477380] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:39:45,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:39:45,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:39:45,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317463387] [2021-11-13 18:39:45,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:39:45,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:39:45,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:39:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:39:45,924 INFO L87 Difference]: Start difference. First operand 1181 states and 1469 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 18:39:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:46,293 INFO L93 Difference]: Finished difference Result 1195 states and 1487 transitions. [2021-11-13 18:39:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:39:46,295 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 18:39:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:46,301 INFO L225 Difference]: With dead ends: 1195 [2021-11-13 18:39:46,301 INFO L226 Difference]: Without dead ends: 1191 [2021-11-13 18:39:46,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:39:46,302 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 24 mSDsluCounter, 5795 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 6766 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.71ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:46,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 6766 Invalid, 125 Unknown, 0 Unchecked, 11.71ms Time], IncrementalHoareTripleChecker [23 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 193.71ms Time] [2021-11-13 18:39:46,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2021-11-13 18:39:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1187. [2021-11-13 18:39:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 786 states have (on average 1.8155216284987277) internal successors, (1427), 1171 states have internal predecessors, (1427), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:39:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1477 transitions. [2021-11-13 18:39:46,325 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1477 transitions. Word has length 79 [2021-11-13 18:39:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:46,325 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1477 transitions. [2021-11-13 18:39:46,326 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 18:39:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1477 transitions. [2021-11-13 18:39:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 18:39:46,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:46,327 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 18:39:46,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:46,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:46,541 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:46,541 INFO L85 PathProgramCache]: Analyzing trace with hash -512767547, now seen corresponding path program 2 times [2021-11-13 18:39:46,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:46,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742933797] [2021-11-13 18:39:46,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:39:46,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:46,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:46,543 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:46,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:39:46,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:39:46,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:39:46,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:39:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:47,228 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 18:39:47,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:47,708 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 18:39:47,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:47,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742933797] [2021-11-13 18:39:47,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742933797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:39:47,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:39:47,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 18:39:47,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107739821] [2021-11-13 18:39:47,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:39:47,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:39:47,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:39:47,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:39:47,710 INFO L87 Difference]: Start difference. First operand 1187 states and 1477 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 18:39:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:49,085 INFO L93 Difference]: Finished difference Result 1215 states and 1515 transitions. [2021-11-13 18:39:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:39:49,086 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 18:39:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:49,093 INFO L225 Difference]: With dead ends: 1215 [2021-11-13 18:39:49,093 INFO L226 Difference]: Without dead ends: 1211 [2021-11-13 18:39:49,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 18:39:49,095 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 84 mSDsluCounter, 6801 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 500.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 7776 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.61ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 567.08ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:49,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 7776 Invalid, 375 Unknown, 0 Unchecked, 8.61ms Time], IncrementalHoareTripleChecker [67 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 567.08ms Time] [2021-11-13 18:39:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-13 18:39:49,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1199. [2021-11-13 18:39:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 798 states have (on average 1.8082706766917294) internal successors, (1443), 1183 states have internal predecessors, (1443), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:39:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1493 transitions. [2021-11-13 18:39:49,120 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1493 transitions. Word has length 83 [2021-11-13 18:39:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:49,120 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 1493 transitions. [2021-11-13 18:39:49,121 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 18:39:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1493 transitions. [2021-11-13 18:39:49,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 18:39:49,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:49,122 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 18:39:49,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:49,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:49,336 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:39:49,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:49,337 INFO L85 PathProgramCache]: Analyzing trace with hash 326177477, now seen corresponding path program 3 times [2021-11-13 18:39:49,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:49,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345745942] [2021-11-13 18:39:49,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:39:49,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:49,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:49,338 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:49,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:39:50,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:39:50,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:39:50,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:39:50,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:50,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:52,180 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 18:39:52,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:52,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345745942] [2021-11-13 18:39:52,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345745942] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:39:52,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:39:52,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 18:39:52,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296250306] [2021-11-13 18:39:52,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:39:52,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 18:39:52,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 18:39:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 18:39:52,184 INFO L87 Difference]: Start difference. First operand 1199 states and 1493 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 18:39:59,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:59,948 INFO L93 Difference]: Finished difference Result 1255 states and 1577 transitions. [2021-11-13 18:39:59,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 18:39:59,949 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 18:39:59,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:59,954 INFO L225 Difference]: With dead ends: 1255 [2021-11-13 18:39:59,955 INFO L226 Difference]: Without dead ends: 1249 [2021-11-13 18:39:59,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 18:39:59,957 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 236 mSDsluCounter, 15632 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1996.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 16614 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.39ms SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2264.01ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:59,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 16614 Invalid, 1407 Unknown, 0 Unchecked, 20.39ms Time], IncrementalHoareTripleChecker [167 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 2264.01ms Time] [2021-11-13 18:39:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-11-13 18:39:59,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1223. [2021-11-13 18:39:59,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 822 states have (on average 1.7931873479318734) internal successors, (1474), 1207 states have internal predecessors, (1474), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:39:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1524 transitions. [2021-11-13 18:39:59,984 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1524 transitions. Word has length 91 [2021-11-13 18:39:59,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:59,985 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1524 transitions. [2021-11-13 18:39:59,985 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 18:39:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1524 transitions. [2021-11-13 18:39:59,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 18:39:59,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:59,986 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 18:40:00,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-13 18:40:00,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:40:00,202 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:40:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:40:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1201101627, now seen corresponding path program 4 times [2021-11-13 18:40:00,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:40:00,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543042308] [2021-11-13 18:40:00,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:40:00,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:40:00,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:40:00,204 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:40:00,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:40:00,523 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:40:00,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:40:00,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:40:00,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:40:01,731 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 18:40:01,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:40:05,787 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 18:40:05,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:40:05,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543042308] [2021-11-13 18:40:05,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543042308] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:40:05,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:40:05,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 18:40:05,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919266292] [2021-11-13 18:40:05,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:40:05,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:40:05,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:40:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:40:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:40:05,792 INFO L87 Difference]: Start difference. First operand 1223 states and 1524 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 18:40:20,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:40:20,084 INFO L93 Difference]: Finished difference Result 1315 states and 1644 transitions. [2021-11-13 18:40:20,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 18:40:20,085 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 18:40:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:40:20,092 INFO L225 Difference]: With dead ends: 1315 [2021-11-13 18:40:20,092 INFO L226 Difference]: Without dead ends: 1311 [2021-11-13 18:40:20,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 18:40:20,101 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 278 mSDsluCounter, 31783 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6651.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 32781 SdHoareTripleChecker+Invalid, 4552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.13ms SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7556.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:40:20,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 32781 Invalid, 4552 Unknown, 0 Unchecked, 48.13ms Time], IncrementalHoareTripleChecker [511 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 7556.10ms Time] [2021-11-13 18:40:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2021-11-13 18:40:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1253. [2021-11-13 18:40:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 852 states have (on average 1.784037558685446) internal successors, (1520), 1237 states have internal predecessors, (1520), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:40:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1570 transitions. [2021-11-13 18:40:20,135 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1570 transitions. Word has length 107 [2021-11-13 18:40:20,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:40:20,135 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 1570 transitions. [2021-11-13 18:40:20,136 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 18:40:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1570 transitions. [2021-11-13 18:40:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 18:40:20,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:40:20,138 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 18:40:20,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:40:20,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:40:20,356 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:40:20,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:40:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1844395141, now seen corresponding path program 5 times [2021-11-13 18:40:20,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:40:20,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823912026] [2021-11-13 18:40:20,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:40:20,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:40:20,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:40:20,359 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:40:20,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8200468-4d68-4143-a1a1-03925f727a4f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 18:40:21,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 18:40:21,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:40:21,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 18:40:21,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:40:21,655 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 18:40:21,884 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 18:40:21,885 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 20 treesize of output 27 [2021-11-13 18:40:21,926 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 18:40:22,110 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