./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL --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 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:27:28,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:27:28,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:27:28,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:27:28,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:27:28,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:27:28,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:27:28,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:27:28,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:27:28,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:27:28,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:27:28,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:27:28,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:27:28,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:27:28,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:27:28,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:27:28,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:27:28,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:27:28,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:27:28,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:27:28,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:27:28,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:27:28,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:27:28,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:27:28,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:27:28,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:27:28,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:27:28,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:27:28,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:27:28,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:27:28,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:27:28,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:27:28,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:27:28,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:27:28,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:27:28,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:27:28,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:27:28,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:27:28,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:27:28,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:27:28,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:27:28,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:27:28,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:27:28,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:27:28,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:27:28,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:27:28,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:27:28,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:27:28,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:27:28,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:27:28,567 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:27:28,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:27:28,567 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:27:28,567 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:27:28,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:27:28,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:27:28,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:27:28,568 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:27:28,568 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:27:28,569 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:27:28,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:27:28,569 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:27:28,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:27:28,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:27:28,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:27:28,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:27:28,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:27:28,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:27:28,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:27:28,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:27:28,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:27:28,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:27:28,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:27:28,572 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_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2021-11-19 05:27:28,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:27:28,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:27:28,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:27:28,844 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:27:28,845 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:27:28,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-11-19 05:27:28,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data/4d6c0dcd2/b1ab78c17b6a4948881bc5fb22b53e96/FLAG0295bdd6e [2021-11-19 05:27:29,564 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:27:29,565 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-11-19 05:27:29,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data/4d6c0dcd2/b1ab78c17b6a4948881bc5fb22b53e96/FLAG0295bdd6e [2021-11-19 05:27:29,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data/4d6c0dcd2/b1ab78c17b6a4948881bc5fb22b53e96 [2021-11-19 05:27:29,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:27:29,772 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:27:29,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:27:29,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:27:29,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:27:29,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:27:29" (1/1) ... [2021-11-19 05:27:29,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff202ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:29, skipping insertion in model container [2021-11-19 05:27:29,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:27:29" (1/1) ... [2021-11-19 05:27:29,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:27:29,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:27:30,275 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-11-19 05:27:30,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-11-19 05:27:30,379 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:27:30,404 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 05:27:30,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@599fc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:30, skipping insertion in model container [2021-11-19 05:27:30,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:27:30,405 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 05:27:30,407 INFO L158 Benchmark]: Toolchain (without parser) took 633.99ms. Allocated memory is still 107.0MB. Free memory was 81.6MB in the beginning and 63.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-19 05:27:30,408 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory was 58.7MB in the beginning and 58.7MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:27:30,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 631.80ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 63.2MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-19 05:27:30,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory was 58.7MB in the beginning and 58.7MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 631.80ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 63.2MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL --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 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:27:32,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:27:32,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:27:32,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:27:32,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:27:32,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:27:32,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:27:32,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:27:32,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:27:32,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:27:32,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:27:32,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:27:32,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:27:32,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:27:32,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:27:32,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:27:32,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:27:32,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:27:32,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:27:32,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:27:32,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:27:32,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:27:32,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:27:32,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:27:32,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:27:32,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:27:32,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:27:32,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:27:32,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:27:32,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:27:32,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:27:32,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:27:32,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:27:32,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:27:32,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:27:32,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:27:32,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:27:32,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:27:32,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:27:32,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:27:32,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:27:32,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 05:27:32,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:27:32,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:27:32,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:27:32,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:27:32,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:27:32,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:27:32,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:27:32,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:27:32,781 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:27:32,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:27:32,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:27:32,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:27:32,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:27:32,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:27:32,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:27:32,784 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:27:32,784 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:27:32,784 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:27:32,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:27:32,784 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:27:32,785 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:27:32,785 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:27:32,785 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:27:32,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:27:32,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:27:32,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:27:32,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:27:32,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:27:32,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:27:32,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:27:32,787 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:27:32,788 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:27:32,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:27:32,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:27:32,788 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_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2021-11-19 05:27:33,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:27:33,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:27:33,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:27:33,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:27:33,173 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:27:33,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-11-19 05:27:33,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data/11913bd8a/8a842a32745b4a7da1b8d1edd802085d/FLAGfe3332e6b [2021-11-19 05:27:33,886 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:27:33,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-11-19 05:27:33,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data/11913bd8a/8a842a32745b4a7da1b8d1edd802085d/FLAGfe3332e6b [2021-11-19 05:27:34,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/data/11913bd8a/8a842a32745b4a7da1b8d1edd802085d [2021-11-19 05:27:34,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:27:34,132 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:27:34,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:27:34,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:27:34,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:27:34,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:27:34" (1/1) ... [2021-11-19 05:27:34,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25752a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:34, skipping insertion in model container [2021-11-19 05:27:34,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:27:34" (1/1) ... [2021-11-19 05:27:34,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:27:34,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:27:34,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-11-19 05:27:34,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-11-19 05:27:34,916 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:27:34,930 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 05:27:34,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:27:34,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-11-19 05:27:35,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-11-19 05:27:35,101 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:27:35,110 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:27:35,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-11-19 05:27:35,228 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-11-19 05:27:35,230 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:27:35,297 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:27:35,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35 WrapperNode [2021-11-19 05:27:35,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:27:35,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:27:35,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:27:35,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:27:35,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35" (1/1) ... [2021-11-19 05:27:35,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35" (1/1) ... [2021-11-19 05:27:35,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35" (1/1) ... [2021-11-19 05:27:35,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35" (1/1) ... [2021-11-19 05:27:35,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35" (1/1) ... [2021-11-19 05:27:35,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35" (1/1) ... [2021-11-19 05:27:35,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35" (1/1) ... [2021-11-19 05:27:35,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:27:35,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:27:35,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:27:35,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:27:35,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35" (1/1) ... [2021-11-19 05:27:35,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:27:35,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:27:35,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:27:35,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:27:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:27:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:27:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:27:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:27:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:27:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:27:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:27:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:27:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:27:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:27:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-19 05:27:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:27:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 05:27:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 05:27:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-19 05:27:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-19 05:27:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 05:27:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 05:27:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 05:27:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-19 05:27:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 05:27:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-19 05:27:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-19 05:27:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-19 05:27:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 05:27:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-19 05:27:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-19 05:27:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-19 05:27:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-19 05:27:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-19 05:27:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-19 05:27:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-19 05:27:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 05:27:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-19 05:27:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-19 05:27:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-19 05:27:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-19 05:27:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-19 05:27:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-19 05:27:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-19 05:27:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-19 05:27:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 05:27:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-19 05:27:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-19 05:27:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-19 05:27:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-19 05:27:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-19 05:27:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-19 05:27:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-19 05:27:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-19 05:27:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-19 05:27:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-19 05:27:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-19 05:27:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-19 05:27:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-19 05:27:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-19 05:27:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-19 05:27:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-19 05:27:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-19 05:27:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-19 05:27:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-19 05:27:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-19 05:27:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-19 05:27:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-19 05:27:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:27:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:27:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:27:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:27:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:27:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:27:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:27:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:27:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:27:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:27:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:27:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:27:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:27:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:27:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:27:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:27:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:27:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:27:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:27:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:27:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:27:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:27:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:27:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:27:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:27:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:27:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:27:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:27:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:27:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:27:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:27:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:27:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:27:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:27:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:27:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:27:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:27:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:27:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:27:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:27:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:27:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:27:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:27:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:27:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:27:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:27:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:27:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:27:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:27:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:27:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:27:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:27:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:27:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:27:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:27:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:27:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:27:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:27:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:27:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:27:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:27:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:27:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:27:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:27:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:27:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:27:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:27:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:27:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:27:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:27:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:27:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:27:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:27:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:27:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:27:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:27:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:27:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:27:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:27:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:27:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:27:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:27:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:27:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:27:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:27:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:27:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:27:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:27:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:27:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:27:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:27:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:27:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:27:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:27:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure clock [2021-11-19 05:27:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure time [2021-11-19 05:27:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure difftime [2021-11-19 05:27:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2021-11-19 05:27:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure strftime [2021-11-19 05:27:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure strftime_l [2021-11-19 05:27:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime [2021-11-19 05:27:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2021-11-19 05:27:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime_r [2021-11-19 05:27:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure localtime_r [2021-11-19 05:27:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure asctime [2021-11-19 05:27:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2021-11-19 05:27:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure asctime_r [2021-11-19 05:27:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure ctime_r [2021-11-19 05:27:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure tzset [2021-11-19 05:27:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure stime [2021-11-19 05:27:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure timegm [2021-11-19 05:27:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure timelocal [2021-11-19 05:27:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure dysize [2021-11-19 05:27:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure nanosleep [2021-11-19 05:27:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getres [2021-11-19 05:27:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure clock_gettime [2021-11-19 05:27:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure clock_settime [2021-11-19 05:27:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure clock_nanosleep [2021-11-19 05:27:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getcpuclockid [2021-11-19 05:27:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure timer_create [2021-11-19 05:27:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure timer_delete [2021-11-19 05:27:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure timer_settime [2021-11-19 05:27:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure timer_gettime [2021-11-19 05:27:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure timer_getoverrun [2021-11-19 05:27:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure timespec_get [2021-11-19 05:27:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:27:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:27:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:27:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:27:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:27:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:27:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-19 05:27:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:27:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:27:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:27:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 05:27:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 05:27:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 05:27:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:27:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:27:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 05:27:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:27:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:27:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:27:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:27:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:27:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 05:27:36,218 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:27:36,223 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:27:36,269 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:27:40,378 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:27:40,409 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:27:40,409 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-19 05:27:40,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:27:40 BoogieIcfgContainer [2021-11-19 05:27:40,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:27:40,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:27:40,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:27:40,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:27:40,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:27:34" (1/3) ... [2021-11-19 05:27:40,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22962872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:27:40, skipping insertion in model container [2021-11-19 05:27:40,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:35" (2/3) ... [2021-11-19 05:27:40,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22962872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:27:40, skipping insertion in model container [2021-11-19 05:27:40,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:27:40" (3/3) ... [2021-11-19 05:27:40,420 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test2-1.i [2021-11-19 05:27:40,430 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:27:40,431 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-19 05:27:40,490 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:27:40,502 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:27:40,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-19 05:27:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 890 states, 445 states have (on average 2.2112359550561798) internal successors, (984), 878 states have internal predecessors, (984), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 05:27:40,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:27:40,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:27:40,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:27:40,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:27:40,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:27:40,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623229, now seen corresponding path program 1 times [2021-11-19 05:27:40,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:27:40,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714267187] [2021-11-19 05:27:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:27:40,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:27:40,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:27:40,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:27:40,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:27:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:27:40,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:27:40,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:27:40,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:27:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:40,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:27:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:41,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:27:41,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714267187] [2021-11-19 05:27:41,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714267187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:27:41,022 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:27:41,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:27:41,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649171836] [2021-11-19 05:27:41,025 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:27:41,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:27:41,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:27:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:27:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:27:41,077 INFO L87 Difference]: Start difference. First operand has 890 states, 445 states have (on average 2.2112359550561798) internal successors, (984), 878 states have internal predecessors, (984), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) 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) [2021-11-19 05:27:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:27:42,736 INFO L93 Difference]: Finished difference Result 877 states and 933 transitions. [2021-11-19 05:27:42,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:27:42,739 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 [2021-11-19 05:27:42,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:27:42,761 INFO L225 Difference]: With dead ends: 877 [2021-11-19 05:27:42,762 INFO L226 Difference]: Without dead ends: 874 [2021-11-19 05:27:42,763 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 [2021-11-19 05:27:42,767 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 792 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:27:42,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 618 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 05:27:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-19 05:27:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 873. [2021-11-19 05:27:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 445 states have (on average 2.042696629213483) internal successors, (909), 862 states have internal predecessors, (909), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:27:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 930 transitions. [2021-11-19 05:27:42,866 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 930 transitions. Word has length 7 [2021-11-19 05:27:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:27:42,866 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 930 transitions. [2021-11-19 05:27:42,866 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) [2021-11-19 05:27:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 930 transitions. [2021-11-19 05:27:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:27:42,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:27:42,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:27:42,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:27:43,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:27:43,082 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:27:43,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:27:43,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623228, now seen corresponding path program 1 times [2021-11-19 05:27:43,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:27:43,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531873191] [2021-11-19 05:27:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:27:43,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:27:43,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:27:43,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:27:43,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:27:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:27:43,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:27:43,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:27:43,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:27:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:43,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:27:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:43,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:27:43,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531873191] [2021-11-19 05:27:43,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531873191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:27:43,396 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:27:43,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:27:43,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750239053] [2021-11-19 05:27:43,397 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:27:43,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:27:43,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:27:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:27:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:27:43,399 INFO L87 Difference]: Start difference. First operand 873 states and 930 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) [2021-11-19 05:27:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:27:47,369 INFO L93 Difference]: Finished difference Result 1156 states and 1238 transitions. [2021-11-19 05:27:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:27:47,370 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 [2021-11-19 05:27:47,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:27:47,376 INFO L225 Difference]: With dead ends: 1156 [2021-11-19 05:27:47,377 INFO L226 Difference]: Without dead ends: 1156 [2021-11-19 05:27:47,377 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 [2021-11-19 05:27:47,379 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 743 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:27:47,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 1427 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 05:27:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-19 05:27:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 908. [2021-11-19 05:27:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 489 states have (on average 2.0204498977505114) internal successors, (988), 897 states have internal predecessors, (988), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:27:47,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1009 transitions. [2021-11-19 05:27:47,429 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1009 transitions. Word has length 7 [2021-11-19 05:27:47,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:27:47,430 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1009 transitions. [2021-11-19 05:27:47,430 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) [2021-11-19 05:27:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1009 transitions. [2021-11-19 05:27:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:27:47,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:27:47,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:27:47,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 05:27:47,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:27:47,642 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:27:47,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:27:47,643 INFO L85 PathProgramCache]: Analyzing trace with hash 372320716, now seen corresponding path program 1 times [2021-11-19 05:27:47,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:27:47,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822498822] [2021-11-19 05:27:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:27:47,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:27:47,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:27:47,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:27:47,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:27:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:27:47,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:27:47,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:27:47,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:27:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:47,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:27:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:47,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:27:47,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822498822] [2021-11-19 05:27:47,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822498822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:27:47,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:27:47,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:27:47,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699109297] [2021-11-19 05:27:47,926 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:27:47,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:27:47,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:27:47,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:27:47,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:27:47,928 INFO L87 Difference]: Start difference. First operand 908 states and 1009 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) [2021-11-19 05:27:49,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:27:49,421 INFO L93 Difference]: Finished difference Result 1074 states and 1193 transitions. [2021-11-19 05:27:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:27:49,422 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 [2021-11-19 05:27:49,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:27:49,428 INFO L225 Difference]: With dead ends: 1074 [2021-11-19 05:27:49,428 INFO L226 Difference]: Without dead ends: 1074 [2021-11-19 05:27:49,429 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 [2021-11-19 05:27:49,430 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 804 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:27:49,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 868 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 05:27:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-11-19 05:27:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 861. [2021-11-19 05:27:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 489 states have (on average 1.918200408997955) internal successors, (938), 850 states have internal predecessors, (938), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:27:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 959 transitions. [2021-11-19 05:27:49,458 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 959 transitions. Word has length 12 [2021-11-19 05:27:49,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:27:49,458 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 959 transitions. [2021-11-19 05:27:49,458 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) [2021-11-19 05:27:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 959 transitions. [2021-11-19 05:27:49,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:27:49,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:27:49,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:27:49,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 05:27:49,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:27:49,668 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:27:49,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:27:49,668 INFO L85 PathProgramCache]: Analyzing trace with hash 372320717, now seen corresponding path program 1 times [2021-11-19 05:27:49,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:27:49,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450812817] [2021-11-19 05:27:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:27:49,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:27:49,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:27:49,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:27:49,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:27:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:27:49,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:27:49,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:27:49,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:27:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:49,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:27:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:49,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:27:49,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450812817] [2021-11-19 05:27:49,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450812817] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:27:49,994 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:27:49,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:27:49,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857802943] [2021-11-19 05:27:49,994 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:27:49,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:27:49,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:27:49,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:27:49,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:27:49,995 INFO L87 Difference]: Start difference. First operand 861 states and 959 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) [2021-11-19 05:27:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:27:53,459 INFO L93 Difference]: Finished difference Result 1106 states and 1188 transitions. [2021-11-19 05:27:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:27:53,461 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 [2021-11-19 05:27:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:27:53,467 INFO L225 Difference]: With dead ends: 1106 [2021-11-19 05:27:53,468 INFO L226 Difference]: Without dead ends: 1106 [2021-11-19 05:27:53,468 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 [2021-11-19 05:27:53,469 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 1022 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:27:53,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 1192 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 05:27:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-19 05:27:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 851. [2021-11-19 05:27:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 489 states have (on average 1.8916155419222904) internal successors, (925), 840 states have internal predecessors, (925), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:27:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 946 transitions. [2021-11-19 05:27:53,496 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 946 transitions. Word has length 12 [2021-11-19 05:27:53,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:27:53,497 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 946 transitions. [2021-11-19 05:27:53,497 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) [2021-11-19 05:27:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 946 transitions. [2021-11-19 05:27:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:27:53,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:27:53,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:27:53,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 05:27:53,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:27:53,709 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:27:53,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:27:53,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2123497305, now seen corresponding path program 1 times [2021-11-19 05:27:53,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:27:53,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945974934] [2021-11-19 05:27:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:27:53,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:27:53,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:27:53,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:27:53,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:27:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:27:53,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:27:53,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:27:53,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:27:53,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:27:53,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:27:53,998 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 05:27:53,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 05:27:54,058 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 05:27:54,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 05:27:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:54,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:27:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:54,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:27:54,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945974934] [2021-11-19 05:27:54,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945974934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:27:54,154 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:27:54,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:27:54,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195075947] [2021-11-19 05:27:54,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:27:54,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:27:54,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:27:54,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:27:54,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:27:54,155 INFO L87 Difference]: Start difference. First operand 851 states and 946 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) [2021-11-19 05:27:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:27:55,881 INFO L93 Difference]: Finished difference Result 1057 states and 1172 transitions. [2021-11-19 05:27:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:27:55,882 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 [2021-11-19 05:27:55,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:27:55,887 INFO L225 Difference]: With dead ends: 1057 [2021-11-19 05:27:55,888 INFO L226 Difference]: Without dead ends: 1057 [2021-11-19 05:27:55,888 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 [2021-11-19 05:27:55,889 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 225 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:27:55,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 3071 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 05:27:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-11-19 05:27:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 851. [2021-11-19 05:27:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 489 states have (on average 1.8895705521472392) internal successors, (924), 840 states have internal predecessors, (924), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:27:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 945 transitions. [2021-11-19 05:27:55,916 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 945 transitions. Word has length 14 [2021-11-19 05:27:55,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:27:55,918 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 945 transitions. [2021-11-19 05:27:55,919 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) [2021-11-19 05:27:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 945 transitions. [2021-11-19 05:27:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:27:55,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:27:55,920 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] [2021-11-19 05:27:55,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:27:56,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:27:56,137 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:27:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:27:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1316346504, now seen corresponding path program 1 times [2021-11-19 05:27:56,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:27:56,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377301959] [2021-11-19 05:27:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:27:56,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:27:56,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:27:56,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:27:56,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:27:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:27:56,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:27:56,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:27:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:56,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:27:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:56,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:27:56,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377301959] [2021-11-19 05:27:56,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377301959] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:27:56,439 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:27:56,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:27:56,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893208900] [2021-11-19 05:27:56,440 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:27:56,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:27:56,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:27:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:27:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:27:56,441 INFO L87 Difference]: Start difference. First operand 851 states and 945 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) [2021-11-19 05:27:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:27:56,472 INFO L93 Difference]: Finished difference Result 818 states and 911 transitions. [2021-11-19 05:27:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:27:56,473 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 [2021-11-19 05:27:56,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:27:56,478 INFO L225 Difference]: With dead ends: 818 [2021-11-19 05:27:56,479 INFO L226 Difference]: Without dead ends: 818 [2021-11-19 05:27:56,479 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 [2021-11-19 05:27:56,482 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 766 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:27:56,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 928 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:27:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-11-19 05:27:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 809. [2021-11-19 05:27:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 471 states have (on average 1.870488322717622) internal successors, (881), 798 states have internal predecessors, (881), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:27:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 902 transitions. [2021-11-19 05:27:56,506 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 902 transitions. Word has length 22 [2021-11-19 05:27:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:27:56,507 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 902 transitions. [2021-11-19 05:27:56,508 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) [2021-11-19 05:27:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 902 transitions. [2021-11-19 05:27:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:27:56,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:27:56,509 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] [2021-11-19 05:27:56,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:27:56,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:27:56,722 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:27:56,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:27:56,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2006361010, now seen corresponding path program 1 times [2021-11-19 05:27:56,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:27:56,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783886928] [2021-11-19 05:27:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:27:56,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:27:56,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:27:56,724 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:27:56,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 05:27:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:27:56,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:27:56,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:27:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:56,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:27:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:57,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:27:57,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783886928] [2021-11-19 05:27:57,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783886928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:27:57,025 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:27:57,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 05:27:57,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687309042] [2021-11-19 05:27:57,025 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:27:57,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:27:57,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:27:57,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:27:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:27:57,027 INFO L87 Difference]: Start difference. First operand 809 states and 902 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) [2021-11-19 05:27:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:27:57,118 INFO L93 Difference]: Finished difference Result 797 states and 883 transitions. [2021-11-19 05:27:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:27:57,119 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 [2021-11-19 05:27:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:27:57,124 INFO L225 Difference]: With dead ends: 797 [2021-11-19 05:27:57,124 INFO L226 Difference]: Without dead ends: 797 [2021-11-19 05:27:57,124 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 [2021-11-19 05:27:57,125 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 1464 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:27:57,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 1592 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:27:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-11-19 05:27:57,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 787. [2021-11-19 05:27:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 463 states have (on average 1.8401727861771058) internal successors, (852), 776 states have internal predecessors, (852), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:27:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 873 transitions. [2021-11-19 05:27:57,154 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 873 transitions. Word has length 24 [2021-11-19 05:27:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:27:57,155 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 873 transitions. [2021-11-19 05:27:57,155 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) [2021-11-19 05:27:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 873 transitions. [2021-11-19 05:27:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:27:57,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:27:57,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:27:57,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:27:57,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:27:57,369 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:27:57,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:27:57,370 INFO L85 PathProgramCache]: Analyzing trace with hash -366881472, now seen corresponding path program 1 times [2021-11-19 05:27:57,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:27:57,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283156175] [2021-11-19 05:27:57,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:27:57,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:27:57,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:27:57,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:27:57,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 05:27:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:27:57,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:27:57,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:27:57,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:27:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:57,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:27:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:27:57,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:27:57,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283156175] [2021-11-19 05:27:57,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283156175] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:27:57,805 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:27:57,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:27:57,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697628504] [2021-11-19 05:27:57,805 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:27:57,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:27:57,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:27:57,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:27:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:27:57,807 INFO L87 Difference]: Start difference. First operand 787 states and 873 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) [2021-11-19 05:27:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:27:59,329 INFO L93 Difference]: Finished difference Result 1008 states and 1115 transitions. [2021-11-19 05:27:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:27:59,331 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 [2021-11-19 05:27:59,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:27:59,337 INFO L225 Difference]: With dead ends: 1008 [2021-11-19 05:27:59,337 INFO L226 Difference]: Without dead ends: 1008 [2021-11-19 05:27:59,337 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 [2021-11-19 05:27:59,338 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 1338 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:27:59,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1338 Valid, 811 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 05:27:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-19 05:27:59,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 783. [2021-11-19 05:27:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 463 states have (on average 1.8315334773218142) internal successors, (848), 772 states have internal predecessors, (848), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:27:59,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 869 transitions. [2021-11-19 05:27:59,361 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 869 transitions. Word has length 38 [2021-11-19 05:27:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:27:59,361 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 869 transitions. [2021-11-19 05:27:59,361 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) [2021-11-19 05:27:59,362 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 869 transitions. [2021-11-19 05:27:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:27:59,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:27:59,363 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] [2021-11-19 05:27:59,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:27:59,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:27:59,578 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:27:59,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:27:59,579 INFO L85 PathProgramCache]: Analyzing trace with hash -366881471, now seen corresponding path program 1 times [2021-11-19 05:27:59,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:27:59,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689420089] [2021-11-19 05:27:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:27:59,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:27:59,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:27:59,581 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:27:59,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 05:27:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:27:59,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:27:59,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:27:59,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:00,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:00,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:00,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689420089] [2021-11-19 05:28:00,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689420089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:00,601 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:00,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:28:00,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785012663] [2021-11-19 05:28:00,602 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:00,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:28:00,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:28:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:28:00,605 INFO L87 Difference]: Start difference. First operand 783 states and 869 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) [2021-11-19 05:28:05,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:05,588 INFO L93 Difference]: Finished difference Result 1046 states and 1119 transitions. [2021-11-19 05:28:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:28:05,590 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 [2021-11-19 05:28:05,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:05,595 INFO L225 Difference]: With dead ends: 1046 [2021-11-19 05:28:05,595 INFO L226 Difference]: Without dead ends: 1046 [2021-11-19 05:28:05,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:28:05,596 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 869 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:05,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1941 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-19 05:28:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-11-19 05:28:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 779. [2021-11-19 05:28:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 463 states have (on average 1.8228941684665227) internal successors, (844), 768 states have internal predecessors, (844), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:28:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 865 transitions. [2021-11-19 05:28:05,617 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 865 transitions. Word has length 38 [2021-11-19 05:28:05,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:05,618 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 865 transitions. [2021-11-19 05:28:05,618 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) [2021-11-19 05:28:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 865 transitions. [2021-11-19 05:28:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 05:28:05,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:05,620 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] [2021-11-19 05:28:05,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-19 05:28:05,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:05,832 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:05,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1799597351, now seen corresponding path program 1 times [2021-11-19 05:28:05,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:05,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613227972] [2021-11-19 05:28:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:05,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:05,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:05,834 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:05,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 05:28:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:06,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:28:06,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:06,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:06,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:06,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613227972] [2021-11-19 05:28:06,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613227972] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:06,335 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:06,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:28:06,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962050787] [2021-11-19 05:28:06,336 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:06,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:28:06,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:28:06,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:28:06,337 INFO L87 Difference]: Start difference. First operand 779 states and 865 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) [2021-11-19 05:28:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:06,385 INFO L93 Difference]: Finished difference Result 782 states and 864 transitions. [2021-11-19 05:28:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:28:06,385 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 [2021-11-19 05:28:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:06,389 INFO L225 Difference]: With dead ends: 782 [2021-11-19 05:28:06,389 INFO L226 Difference]: Without dead ends: 782 [2021-11-19 05:28:06,389 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 [2021-11-19 05:28:06,390 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 713 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:06,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 1570 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:28:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-19 05:28:06,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 773. [2021-11-19 05:28:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 457 states have (on average 1.824945295404814) internal successors, (834), 762 states have internal predecessors, (834), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:28:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 855 transitions. [2021-11-19 05:28:06,412 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 855 transitions. Word has length 53 [2021-11-19 05:28:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:06,414 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 855 transitions. [2021-11-19 05:28:06,414 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) [2021-11-19 05:28:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 855 transitions. [2021-11-19 05:28:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 05:28:06,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:06,417 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] [2021-11-19 05:28:06,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:06,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:06,630 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:06,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:06,630 INFO L85 PathProgramCache]: Analyzing trace with hash -387318643, now seen corresponding path program 1 times [2021-11-19 05:28:06,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:06,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851375383] [2021-11-19 05:28:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:06,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:06,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:06,632 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:06,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 05:28:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:06,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:28:06,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:07,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:07,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:07,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851375383] [2021-11-19 05:28:07,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851375383] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:07,668 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:07,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:28:07,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449298096] [2021-11-19 05:28:07,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:07,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:28:07,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:07,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:28:07,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:28:07,670 INFO L87 Difference]: Start difference. First operand 773 states and 855 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) [2021-11-19 05:28:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:07,790 INFO L93 Difference]: Finished difference Result 962 states and 1057 transitions. [2021-11-19 05:28:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:28:07,790 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 [2021-11-19 05:28:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:07,795 INFO L225 Difference]: With dead ends: 962 [2021-11-19 05:28:07,795 INFO L226 Difference]: Without dead ends: 962 [2021-11-19 05:28:07,795 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 [2021-11-19 05:28:07,796 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 217 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:07,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1557 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:28:07,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-11-19 05:28:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 907. [2021-11-19 05:28:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 590 states have (on average 1.7474576271186442) internal successors, (1031), 895 states have internal predecessors, (1031), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 05:28:07,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1054 transitions. [2021-11-19 05:28:07,818 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1054 transitions. Word has length 61 [2021-11-19 05:28:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:07,819 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1054 transitions. [2021-11-19 05:28:07,819 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) [2021-11-19 05:28:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1054 transitions. [2021-11-19 05:28:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 05:28:07,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:07,821 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] [2021-11-19 05:28:07,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:08,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:08,034 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:08,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:08,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1860046283, now seen corresponding path program 1 times [2021-11-19 05:28:08,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:08,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456315509] [2021-11-19 05:28:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:08,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:08,036 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:08,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 05:28:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:08,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:28:08,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:08,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:08,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:09,069 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:28:09,070 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 29 treesize of output 31 [2021-11-19 05:28:09,084 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 05:28:09,085 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 28 treesize of output 24 [2021-11-19 05:28:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:09,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:13,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:13,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456315509] [2021-11-19 05:28:13,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456315509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:13,793 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:13,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:28:13,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879856687] [2021-11-19 05:28:13,793 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:13,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:28:13,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:28:13,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 05:28:13,795 INFO L87 Difference]: Start difference. First operand 907 states and 1054 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) [2021-11-19 05:28:16,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:16,698 INFO L93 Difference]: Finished difference Result 1125 states and 1266 transitions. [2021-11-19 05:28:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:28:16,699 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 [2021-11-19 05:28:16,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:16,704 INFO L225 Difference]: With dead ends: 1125 [2021-11-19 05:28:16,704 INFO L226 Difference]: Without dead ends: 1125 [2021-11-19 05:28:16,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 05:28:16,705 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1344 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 671 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:16,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 952 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 539 Invalid, 0 Unknown, 671 Unchecked, 2.9s Time] [2021-11-19 05:28:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-11-19 05:28:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 877. [2021-11-19 05:28:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 592 states have (on average 1.6908783783783783) internal successors, (1001), 865 states have internal predecessors, (1001), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 05:28:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1024 transitions. [2021-11-19 05:28:16,751 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1024 transitions. Word has length 64 [2021-11-19 05:28:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:16,752 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1024 transitions. [2021-11-19 05:28:16,753 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) [2021-11-19 05:28:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1024 transitions. [2021-11-19 05:28:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:28:16,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:16,755 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] [2021-11-19 05:28:16,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:16,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:16,970 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash 798093132, now seen corresponding path program 1 times [2021-11-19 05:28:16,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:16,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261447765] [2021-11-19 05:28:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:16,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:16,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:16,972 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:16,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 05:28:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:17,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:28:17,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:17,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:17,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 05:28:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:17,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:17,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261447765] [2021-11-19 05:28:17,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261447765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:17,818 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:17,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:28:17,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581810853] [2021-11-19 05:28:17,819 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:17,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:28:17,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:28:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:28:17,819 INFO L87 Difference]: Start difference. First operand 877 states and 1024 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) [2021-11-19 05:28:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:19,263 INFO L93 Difference]: Finished difference Result 875 states and 1022 transitions. [2021-11-19 05:28:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:28:19,264 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 [2021-11-19 05:28:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:19,267 INFO L225 Difference]: With dead ends: 875 [2021-11-19 05:28:19,268 INFO L226 Difference]: Without dead ends: 875 [2021-11-19 05:28:19,268 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 [2021-11-19 05:28:19,268 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 1292 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:19,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1296 Valid, 546 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 05:28:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-19 05:28:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 875. [2021-11-19 05:28:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 592 states have (on average 1.6875) internal successors, (999), 863 states have internal predecessors, (999), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 05:28:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1022 transitions. [2021-11-19 05:28:19,289 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1022 transitions. Word has length 66 [2021-11-19 05:28:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:19,290 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1022 transitions. [2021-11-19 05:28:19,290 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) [2021-11-19 05:28:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1022 transitions. [2021-11-19 05:28:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:28:19,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:19,291 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] [2021-11-19 05:28:19,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:19,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:19,505 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:19,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash -946127520, now seen corresponding path program 1 times [2021-11-19 05:28:19,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:19,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629369272] [2021-11-19 05:28:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:19,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:19,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:19,507 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:19,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 05:28:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:19,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:28:19,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:19,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:19,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 05:28:19,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 05:28:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:19,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:20,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:20,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629369272] [2021-11-19 05:28:20,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629369272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:20,117 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:20,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:28:20,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835792337] [2021-11-19 05:28:20,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:20,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:28:20,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:20,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:28:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:28:20,118 INFO L87 Difference]: Start difference. First operand 875 states and 1022 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) [2021-11-19 05:28:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:22,260 INFO L93 Difference]: Finished difference Result 874 states and 1021 transitions. [2021-11-19 05:28:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:28:22,260 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 [2021-11-19 05:28:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:22,265 INFO L225 Difference]: With dead ends: 874 [2021-11-19 05:28:22,265 INFO L226 Difference]: Without dead ends: 874 [2021-11-19 05:28:22,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:28:22,266 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 4 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:22,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1917 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 05:28:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-19 05:28:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2021-11-19 05:28:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 592 states have (on average 1.6858108108108107) internal successors, (998), 862 states have internal predecessors, (998), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 05:28:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1021 transitions. [2021-11-19 05:28:22,286 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1021 transitions. Word has length 69 [2021-11-19 05:28:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:22,287 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1021 transitions. [2021-11-19 05:28:22,287 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) [2021-11-19 05:28:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1021 transitions. [2021-11-19 05:28:22,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:28:22,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:22,288 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] [2021-11-19 05:28:22,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 05:28:22,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:22,527 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:22,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:22,527 INFO L85 PathProgramCache]: Analyzing trace with hash -946127519, now seen corresponding path program 1 times [2021-11-19 05:28:22,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:22,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667430574] [2021-11-19 05:28:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:22,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:22,529 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:22,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 05:28:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:22,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:28:22,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:22,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:22,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 05:28:22,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:28:23,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 05:28:23,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 05:28:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:23,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:23,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:23,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667430574] [2021-11-19 05:28:23,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667430574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:23,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:23,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 05:28:23,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404884922] [2021-11-19 05:28:23,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:23,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:28:23,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:23,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:28:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:28:23,312 INFO L87 Difference]: Start difference. First operand 874 states and 1021 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) [2021-11-19 05:28:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:30,242 INFO L93 Difference]: Finished difference Result 873 states and 1020 transitions. [2021-11-19 05:28:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:28:30,243 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 [2021-11-19 05:28:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:30,246 INFO L225 Difference]: With dead ends: 873 [2021-11-19 05:28:30,246 INFO L226 Difference]: Without dead ends: 873 [2021-11-19 05:28:30,247 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 [2021-11-19 05:28:30,251 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 3 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:30,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2723 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-19 05:28:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-11-19 05:28:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2021-11-19 05:28:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 591 states have (on average 1.6869712351945854) internal successors, (997), 861 states have internal predecessors, (997), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 05:28:30,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1020 transitions. [2021-11-19 05:28:30,270 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1020 transitions. Word has length 69 [2021-11-19 05:28:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:30,271 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1020 transitions. [2021-11-19 05:28:30,271 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) [2021-11-19 05:28:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1020 transitions. [2021-11-19 05:28:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 05:28:30,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:30,276 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] [2021-11-19 05:28:30,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:30,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:30,490 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash -582919641, now seen corresponding path program 1 times [2021-11-19 05:28:30,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:30,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754104824] [2021-11-19 05:28:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:30,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:30,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:30,492 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:30,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 05:28:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:30,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:28:30,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:30,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:31,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:31,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754104824] [2021-11-19 05:28:31,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754104824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:31,098 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:31,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:28:31,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682669806] [2021-11-19 05:28:31,098 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:31,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:28:31,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:31,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:28:31,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:28:31,099 INFO L87 Difference]: Start difference. First operand 873 states and 1020 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) [2021-11-19 05:28:31,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:31,192 INFO L93 Difference]: Finished difference Result 883 states and 1033 transitions. [2021-11-19 05:28:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:28:31,193 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 [2021-11-19 05:28:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:31,199 INFO L225 Difference]: With dead ends: 883 [2021-11-19 05:28:31,199 INFO L226 Difference]: Without dead ends: 883 [2021-11-19 05:28:31,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:28:31,200 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 11 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:31,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1458 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:28:31,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-11-19 05:28:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-11-19 05:28:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 599 states have (on average 1.684474123539232) internal successors, (1009), 870 states have internal predecessors, (1009), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-19 05:28:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1033 transitions. [2021-11-19 05:28:31,221 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1033 transitions. Word has length 77 [2021-11-19 05:28:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:31,221 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1033 transitions. [2021-11-19 05:28:31,221 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) [2021-11-19 05:28:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1033 transitions. [2021-11-19 05:28:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 05:28:31,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:31,223 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] [2021-11-19 05:28:31,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:31,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:31,436 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1748666471, now seen corresponding path program 1 times [2021-11-19 05:28:31,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:31,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607141125] [2021-11-19 05:28:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:31,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:31,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:31,439 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:31,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 05:28:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:31,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:28:31,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:31,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:32,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:32,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607141125] [2021-11-19 05:28:32,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607141125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:28:32,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:28:32,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-19 05:28:32,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177714304] [2021-11-19 05:28:32,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:28:32,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:28:32,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:32,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:28:32,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:28:32,121 INFO L87 Difference]: Start difference. First operand 883 states and 1033 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) [2021-11-19 05:28:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:32,461 INFO L93 Difference]: Finished difference Result 897 states and 1051 transitions. [2021-11-19 05:28:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:28:32,462 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 [2021-11-19 05:28:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:32,467 INFO L225 Difference]: With dead ends: 897 [2021-11-19 05:28:32,467 INFO L226 Difference]: Without dead ends: 893 [2021-11-19 05:28:32,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:28:32,468 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 26 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:32,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 3639 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:28:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-11-19 05:28:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 889. [2021-11-19 05:28:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 605 states have (on average 1.6809917355371902) internal successors, (1017), 876 states have internal predecessors, (1017), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-19 05:28:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1041 transitions. [2021-11-19 05:28:32,487 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1041 transitions. Word has length 79 [2021-11-19 05:28:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:32,487 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1041 transitions. [2021-11-19 05:28:32,488 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) [2021-11-19 05:28:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1041 transitions. [2021-11-19 05:28:32,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 05:28:32,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:32,489 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] [2021-11-19 05:28:32,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-19 05:28:32,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:32,703 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:32,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:32,703 INFO L85 PathProgramCache]: Analyzing trace with hash 198784231, now seen corresponding path program 2 times [2021-11-19 05:28:32,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:32,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311770508] [2021-11-19 05:28:32,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:28:32,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:32,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:32,705 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:32,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 05:28:33,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:28:33,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:28:33,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 05:28:33,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:33,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:34,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:34,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311770508] [2021-11-19 05:28:34,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311770508] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:28:34,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:28:34,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-19 05:28:34,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709085666] [2021-11-19 05:28:34,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:28:34,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:28:34,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:28:34,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:28:34,010 INFO L87 Difference]: Start difference. First operand 889 states and 1041 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) [2021-11-19 05:28:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:35,400 INFO L93 Difference]: Finished difference Result 917 states and 1079 transitions. [2021-11-19 05:28:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 05:28:35,401 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 [2021-11-19 05:28:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:35,405 INFO L225 Difference]: With dead ends: 917 [2021-11-19 05:28:35,406 INFO L226 Difference]: Without dead ends: 913 [2021-11-19 05:28:35,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 05:28:35,407 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 64 mSDsluCounter, 7291 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 8026 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:35,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 8026 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:28:35,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2021-11-19 05:28:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 901. [2021-11-19 05:28:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 617 states have (on average 1.674230145867099) internal successors, (1033), 888 states have internal predecessors, (1033), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-19 05:28:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1057 transitions. [2021-11-19 05:28:35,425 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1057 transitions. Word has length 83 [2021-11-19 05:28:35,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:35,425 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1057 transitions. [2021-11-19 05:28:35,426 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) [2021-11-19 05:28:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1057 transitions. [2021-11-19 05:28:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 05:28:35,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:35,427 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] [2021-11-19 05:28:35,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:35,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:35,643 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1907871207, now seen corresponding path program 3 times [2021-11-19 05:28:35,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:35,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533753173] [2021-11-19 05:28:35,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:28:35,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:35,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:35,645 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:35,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 05:28:36,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 05:28:36,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:28:36,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 05:28:36,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:36,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:38,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:38,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533753173] [2021-11-19 05:28:38,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533753173] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:28:38,474 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:28:38,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-19 05:28:38,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579178197] [2021-11-19 05:28:38,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:28:38,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 05:28:38,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:38,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 05:28:38,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 05:28:38,477 INFO L87 Difference]: Start difference. First operand 901 states and 1057 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) [2021-11-19 05:28:45,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:45,908 INFO L93 Difference]: Finished difference Result 957 states and 1141 transitions. [2021-11-19 05:28:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-19 05:28:45,908 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 [2021-11-19 05:28:45,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:45,912 INFO L225 Difference]: With dead ends: 957 [2021-11-19 05:28:45,912 INFO L226 Difference]: Without dead ends: 951 [2021-11-19 05:28:45,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-19 05:28:45,914 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 226 mSDsluCounter, 12517 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 13259 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:45,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 13259 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 05:28:45,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-11-19 05:28:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 925. [2021-11-19 05:28:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 641 states have (on average 1.6599063962558502) internal successors, (1064), 912 states have internal predecessors, (1064), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-19 05:28:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1088 transitions. [2021-11-19 05:28:45,935 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1088 transitions. Word has length 91 [2021-11-19 05:28:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:45,935 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1088 transitions. [2021-11-19 05:28:45,935 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) [2021-11-19 05:28:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1088 transitions. [2021-11-19 05:28:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 05:28:45,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:45,937 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] [2021-11-19 05:28:45,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:46,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:46,152 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:28:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:46,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1870266343, now seen corresponding path program 4 times [2021-11-19 05:28:46,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:46,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385501077] [2021-11-19 05:28:46,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:28:46,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:46,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:46,155 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:46,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 05:28:46,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:28:46,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:28:46,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 05:28:46,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:47,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:51,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:51,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385501077] [2021-11-19 05:28:51,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385501077] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:28:51,303 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:28:51,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-19 05:28:51,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063628358] [2021-11-19 05:28:51,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:28:51,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-19 05:28:51,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:51,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-19 05:28:51,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-19 05:28:51,307 INFO L87 Difference]: Start difference. First operand 925 states and 1088 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) [2021-11-19 05:29:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:04,293 INFO L93 Difference]: Finished difference Result 1017 states and 1208 transitions. [2021-11-19 05:29:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-19 05:29:04,294 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 [2021-11-19 05:29:04,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:04,299 INFO L225 Difference]: With dead ends: 1017 [2021-11-19 05:29:04,299 INFO L226 Difference]: Without dead ends: 1013 [2021-11-19 05:29:04,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-19 05:29:04,306 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 281 mSDsluCounter, 23379 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 24137 SdHoareTripleChecker+Invalid, 4648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:04,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 24137 Invalid, 4648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-19 05:29:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2021-11-19 05:29:04,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 955. [2021-11-19 05:29:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 671 states have (on average 1.65424739195231) internal successors, (1110), 942 states have internal predecessors, (1110), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-19 05:29:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1134 transitions. [2021-11-19 05:29:04,332 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1134 transitions. Word has length 107 [2021-11-19 05:29:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:04,333 INFO L470 AbstractCegarLoop]: Abstraction has 955 states and 1134 transitions. [2021-11-19 05:29:04,333 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) [2021-11-19 05:29:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1134 transitions. [2021-11-19 05:29:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 05:29:04,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:04,335 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] [2021-11-19 05:29:04,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 05:29:04,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:04,551 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 05:29:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:04,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1845795929, now seen corresponding path program 5 times [2021-11-19 05:29:04,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:04,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154038504] [2021-11-19 05:29:04,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 05:29:04,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:04,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:04,554 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:04,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438fa43b-aefe-4306-8f2b-abfb81e74362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 05:29:05,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-19 05:29:05,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:29:05,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-19 05:29:05,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:05,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:29:05,874 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 05:29:05,875 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 [2021-11-19 05:29:05,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-19 05:29:06,065 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 37 treesize of output 25