./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt --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 0adf73b7dd596c46d6accaa4759d997d536c99cf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt --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 0adf73b7dd596c46d6accaa4759d997d536c99cf ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:15:30,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:15:30,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:15:30,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:15:30,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:15:30,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:15:30,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:15:30,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:15:30,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:15:30,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:15:30,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:15:30,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:15:30,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:15:30,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:15:30,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:15:30,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:15:30,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:15:30,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:15:30,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:15:30,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:15:30,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:15:30,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:15:30,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:15:30,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:15:30,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:15:30,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:15:30,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:15:30,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:15:30,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:15:30,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:15:30,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:15:30,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:15:30,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:15:30,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:15:30,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:15:30,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:15:30,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:15:30,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:15:30,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:15:30,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:15:30,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:15:30,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 01:15:30,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:15:30,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:15:30,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:15:30,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:15:30,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:15:30,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:15:30,663 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:15:30,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:15:30,664 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:15:30,664 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:15:30,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:15:30,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:15:30,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:15:30,665 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:15:30,665 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:15:30,666 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:15:30,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:15:30,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:15:30,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:15:30,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:15:30,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:15:30,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:15:30,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:15:30,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:15:30,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:15:30,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:15:30,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:15:30,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:15:30,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:15:30,669 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_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2021-10-13 01:15:30,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:15:30,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:15:30,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:15:30,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:15:30,986 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:15:30,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-13 01:15:31,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data/0f8441494/a5dad866f56149d2995b5e165bee3e5d/FLAG238ff7b63 [2021-10-13 01:15:31,558 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:15:31,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-13 01:15:31,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data/0f8441494/a5dad866f56149d2995b5e165bee3e5d/FLAG238ff7b63 [2021-10-13 01:15:31,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data/0f8441494/a5dad866f56149d2995b5e165bee3e5d [2021-10-13 01:15:31,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:15:31,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:15:31,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:15:31,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:15:31,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:15:31,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:31" (1/1) ... [2021-10-13 01:15:31,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b49d43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:31, skipping insertion in model container [2021-10-13 01:15:31,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:31" (1/1) ... [2021-10-13 01:15:31,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:15:31,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:15:32,318 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-13 01:15:32,321 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-13 01:15:32,323 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-13 01:15:32,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:15:32,338 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:15:32,403 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-13 01:15:32,409 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-13 01:15:32,411 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-13 01:15:32,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:15:32,444 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:15:32,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32 WrapperNode [2021-10-13 01:15:32,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:15:32,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:15:32,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:15:32,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:15:32,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32" (1/1) ... [2021-10-13 01:15:32,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32" (1/1) ... [2021-10-13 01:15:32,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32" (1/1) ... [2021-10-13 01:15:32,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32" (1/1) ... [2021-10-13 01:15:32,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32" (1/1) ... [2021-10-13 01:15:32,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32" (1/1) ... [2021-10-13 01:15:32,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32" (1/1) ... [2021-10-13 01:15:32,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:15:32,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:15:32,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:15:32,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:15:32,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32" (1/1) ... [2021-10-13 01:15:32,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:15:32,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:15:32,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:15:32,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:15:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 01:15:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:15:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 01:15:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 01:15:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 01:15:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 01:15:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 01:15:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 01:15:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 01:15:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 01:15:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 01:15:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 01:15:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 01:15:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 01:15:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 01:15:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 01:15:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 01:15:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 01:15:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 01:15:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 01:15:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 01:15:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 01:15:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 01:15:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 01:15:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 01:15:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 01:15:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 01:15:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 01:15:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 01:15:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 01:15:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 01:15:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 01:15:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 01:15:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 01:15:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 01:15:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 01:15:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 01:15:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 01:15:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 01:15:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 01:15:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 01:15:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 01:15:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 01:15:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 01:15:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 01:15:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 01:15:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 01:15:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 01:15:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 01:15:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 01:15:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 01:15:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 01:15:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 01:15:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 01:15:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 01:15:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 01:15:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 01:15:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 01:15:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-13 01:15:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 01:15:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 01:15:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 01:15:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 01:15:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 01:15:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 01:15:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 01:15:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 01:15:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 01:15:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 01:15:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 01:15:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 01:15:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 01:15:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 01:15:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 01:15:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 01:15:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 01:15:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 01:15:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 01:15:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 01:15:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 01:15:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 01:15:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 01:15:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 01:15:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 01:15:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 01:15:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 01:15:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 01:15:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 01:15:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 01:15:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 01:15:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 01:15:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 01:15:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 01:15:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 01:15:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 01:15:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 01:15:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 01:15:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 01:15:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 01:15:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 01:15:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 01:15:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 01:15:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 01:15:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 01:15:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 01:15:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 01:15:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 01:15:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 01:15:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 01:15:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 01:15:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 01:15:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 01:15:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:15:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 01:15:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 01:15:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 01:15:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 01:15:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 01:15:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 01:15:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:15:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 01:15:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:15:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:15:33,327 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:15:33,329 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 01:15:33,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:33 BoogieIcfgContainer [2021-10-13 01:15:33,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:15:33,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:15:33,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:15:33,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:15:33,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:15:31" (1/3) ... [2021-10-13 01:15:33,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29445bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:33, skipping insertion in model container [2021-10-13 01:15:33,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:32" (2/3) ... [2021-10-13 01:15:33,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29445bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:33, skipping insertion in model container [2021-10-13 01:15:33,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:33" (3/3) ... [2021-10-13 01:15:33,349 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-13 01:15:33,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:15:33,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-13 01:15:33,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:15:33,405 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, mConcurrency=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 [2021-10-13 01:15:33,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-13 01:15:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 01:15:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:15:33,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:33,430 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:33,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:33,436 INFO L82 PathProgramCache]: Analyzing trace with hash 384543771, now seen corresponding path program 1 times [2021-10-13 01:15:33,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:15:33,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783863569] [2021-10-13 01:15:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:33,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:15:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:15:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:33,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:15:33,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783863569] [2021-10-13 01:15:33,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783863569] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:33,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:33,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:15:33,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834028946] [2021-10-13 01:15:33,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:15:33,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:15:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:15:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:15:33,697 INFO L87 Difference]: Start difference. First operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:33,938 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-10-13 01:15:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:15:33,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 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 [2021-10-13 01:15:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:33,976 INFO L225 Difference]: With dead ends: 127 [2021-10-13 01:15:33,976 INFO L226 Difference]: Without dead ends: 123 [2021-10-13 01:15:33,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:15:33,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-13 01:15:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-10-13 01:15:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.835820895522388) internal successors, (123), 115 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2021-10-13 01:15:34,026 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 7 [2021-10-13 01:15:34,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:34,026 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2021-10-13 01:15:34,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2021-10-13 01:15:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:15:34,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:34,028 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:34,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:15:34,029 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:34,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:34,030 INFO L82 PathProgramCache]: Analyzing trace with hash 384543772, now seen corresponding path program 1 times [2021-10-13 01:15:34,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:15:34,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240928950] [2021-10-13 01:15:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:34,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:15:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:15:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:34,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:15:34,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240928950] [2021-10-13 01:15:34,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240928950] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:34,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:34,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:15:34,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641603478] [2021-10-13 01:15:34,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:15:34,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:15:34,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:15:34,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:15:34,171 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:34,421 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-10-13 01:15:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:15:34,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 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 [2021-10-13 01:15:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:34,428 INFO L225 Difference]: With dead ends: 137 [2021-10-13 01:15:34,428 INFO L226 Difference]: Without dead ends: 137 [2021-10-13 01:15:34,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:15:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-13 01:15:34,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 124. [2021-10-13 01:15:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 120 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-10-13 01:15:34,453 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 7 [2021-10-13 01:15:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:34,454 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-10-13 01:15:34,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-10-13 01:15:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 01:15:34,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:34,455 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:34,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:15:34,456 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:34,457 INFO L82 PathProgramCache]: Analyzing trace with hash 849124794, now seen corresponding path program 1 times [2021-10-13 01:15:34,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:15:34,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556973455] [2021-10-13 01:15:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:34,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:15:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:34,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:15:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:34,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:15:34,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556973455] [2021-10-13 01:15:34,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556973455] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:34,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:34,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:15:34,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93043568] [2021-10-13 01:15:34,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:15:34,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:15:34,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:15:34,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:15:34,624 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:34,899 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2021-10-13 01:15:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:15:34,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 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 [2021-10-13 01:15:34,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:34,902 INFO L225 Difference]: With dead ends: 131 [2021-10-13 01:15:34,903 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 01:15:34,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:15:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 01:15:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2021-10-13 01:15:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 112 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-10-13 01:15:34,921 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2021-10-13 01:15:34,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:34,921 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-10-13 01:15:34,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:34,922 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-10-13 01:15:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 01:15:34,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:34,922 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:34,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:15:34,923 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:34,924 INFO L82 PathProgramCache]: Analyzing trace with hash 849124795, now seen corresponding path program 1 times [2021-10-13 01:15:34,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:15:34,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844484142] [2021-10-13 01:15:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:34,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:15:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:15:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:35,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:15:35,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844484142] [2021-10-13 01:15:35,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844484142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:35,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:35,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 01:15:35,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48925642] [2021-10-13 01:15:35,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:15:35,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:15:35,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:15:35,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:15:35,105 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:35,415 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2021-10-13 01:15:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:15:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 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 [2021-10-13 01:15:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:35,416 INFO L225 Difference]: With dead ends: 155 [2021-10-13 01:15:35,416 INFO L226 Difference]: Without dead ends: 155 [2021-10-13 01:15:35,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 64.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:15:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-13 01:15:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 126. [2021-10-13 01:15:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 88 states have (on average 1.5340909090909092) internal successors, (135), 122 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-10-13 01:15:35,422 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 12 [2021-10-13 01:15:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:35,423 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-10-13 01:15:35,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:35,423 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-10-13 01:15:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 01:15:35,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:35,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:35,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:15:35,424 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:35,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:35,425 INFO L82 PathProgramCache]: Analyzing trace with hash -34876986, now seen corresponding path program 1 times [2021-10-13 01:15:35,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:15:35,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553810232] [2021-10-13 01:15:35,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:35,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:15:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:15:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:35,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:15:35,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553810232] [2021-10-13 01:15:35,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553810232] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:35,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:35,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:15:35,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149320156] [2021-10-13 01:15:35,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:15:35,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:15:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:15:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:15:35,489 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:35,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:35,667 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-10-13 01:15:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:15:35,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 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 [2021-10-13 01:15:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:35,668 INFO L225 Difference]: With dead ends: 140 [2021-10-13 01:15:35,669 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 01:15:35,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:15:35,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 01:15:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-10-13 01:15:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 87 states have (on average 1.5057471264367817) internal successors, (131), 120 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-10-13 01:15:35,674 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 14 [2021-10-13 01:15:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:35,674 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-10-13 01:15:35,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-10-13 01:15:35,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:15:35,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:35,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:35,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 01:15:35,675 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:35,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:35,676 INFO L82 PathProgramCache]: Analyzing trace with hash 860042492, now seen corresponding path program 1 times [2021-10-13 01:15:35,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:15:35,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119364931] [2021-10-13 01:15:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:35,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:15:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:35,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:15:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:35,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:15:35,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119364931] [2021-10-13 01:15:35,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119364931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:35,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:35,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 01:15:35,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448264166] [2021-10-13 01:15:35,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:15:35,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:15:35,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:15:35,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:15:35,755 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:36,041 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-10-13 01:15:36,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:15:36,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 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 16 [2021-10-13 01:15:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:36,042 INFO L225 Difference]: With dead ends: 125 [2021-10-13 01:15:36,043 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 01:15:36,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:15:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 01:15:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-10-13 01:15:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 119 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-10-13 01:15:36,057 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-10-13 01:15:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:36,057 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-10-13 01:15:36,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-10-13 01:15:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:15:36,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:36,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:36,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 01:15:36,062 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:36,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:36,063 INFO L82 PathProgramCache]: Analyzing trace with hash 860042493, now seen corresponding path program 1 times [2021-10-13 01:15:36,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:15:36,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256971015] [2021-10-13 01:15:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:36,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:15:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:15:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:36,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:15:36,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256971015] [2021-10-13 01:15:36,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256971015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:36,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:36,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 01:15:36,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689772346] [2021-10-13 01:15:36,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:15:36,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:15:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:15:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:15:36,190 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:36,511 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-10-13 01:15:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:15:36,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 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 16 [2021-10-13 01:15:36,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:36,513 INFO L225 Difference]: With dead ends: 125 [2021-10-13 01:15:36,513 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 01:15:36,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:15:36,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 01:15:36,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2021-10-13 01:15:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 114 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-10-13 01:15:36,516 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 16 [2021-10-13 01:15:36,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:36,516 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-10-13 01:15:36,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-10-13 01:15:36,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:15:36,517 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:36,517 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:36,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 01:15:36,518 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:36,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:36,518 INFO L82 PathProgramCache]: Analyzing trace with hash 365787858, now seen corresponding path program 1 times [2021-10-13 01:15:36,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:15:36,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437512562] [2021-10-13 01:15:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:36,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:15:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:15:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:36,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:15:36,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437512562] [2021-10-13 01:15:36,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437512562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:36,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:36,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 01:15:36,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976292961] [2021-10-13 01:15:36,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:15:36,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:15:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:15:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:15:36,612 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:36,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:36,873 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-10-13 01:15:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:15:36,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-13 01:15:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:36,875 INFO L225 Difference]: With dead ends: 181 [2021-10-13 01:15:36,875 INFO L226 Difference]: Without dead ends: 181 [2021-10-13 01:15:36,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:15:36,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-13 01:15:36,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 125. [2021-10-13 01:15:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 121 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-10-13 01:15:36,879 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 17 [2021-10-13 01:15:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:36,880 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-10-13 01:15:36,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-10-13 01:15:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:15:36,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:36,881 INFO L512 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] [2021-10-13 01:15:36,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 01:15:36,882 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:36,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:36,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1043040677, now seen corresponding path program 1 times [2021-10-13 01:15:36,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:15:36,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484625731] [2021-10-13 01:15:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:36,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:15:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:15:36,894 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:15:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:15:36,928 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:15:36,928 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:15:36,929 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 01:15:36,930 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 01:15:36,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-13 01:15:36,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 01:15:36,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 01:15:36,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 01:15:36,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 01:15:36,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-13 01:15:36,932 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-13 01:15:36,932 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-13 01:15:36,932 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-13 01:15:36,935 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-13 01:15:36,935 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-13 01:15:36,936 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-13 01:15:36,937 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-13 01:15:36,937 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-13 01:15:36,937 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-13 01:15:36,938 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-13 01:15:36,938 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-13 01:15:36,938 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-13 01:15:36,938 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-13 01:15:36,938 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-13 01:15:36,939 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-13 01:15:36,939 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 01:15:36,939 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-13 01:15:36,939 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-13 01:15:36,940 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 01:15:36,940 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-13 01:15:36,940 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-13 01:15:36,940 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-13 01:15:36,941 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-13 01:15:36,941 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-13 01:15:36,941 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-13 01:15:36,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-13 01:15:36,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-13 01:15:36,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-13 01:15:36,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-13 01:15:36,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-13 01:15:36,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-13 01:15:36,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-13 01:15:36,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-13 01:15:36,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:15:36,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:15:36,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:15:36,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-13 01:15:36,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-13 01:15:36,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:15:36,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:15:36,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:15:36,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-13 01:15:36,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-13 01:15:36,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:15:36,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:15:36,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:15:36,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 01:15:36,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 01:15:36,953 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:15:36,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:15:36 BoogieIcfgContainer [2021-10-13 01:15:36,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:15:36,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:15:36,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:15:36,977 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:15:36,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:33" (3/4) ... [2021-10-13 01:15:36,980 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:15:36,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:15:36,981 INFO L168 Benchmark]: Toolchain (without parser) took 5092.15 ms. Allocated memory was 81.8 MB in the beginning and 130.0 MB in the end (delta: 48.2 MB). Free memory was 46.8 MB in the beginning and 77.8 MB in the end (delta: -30.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:15:36,982 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 55.9 MB in the beginning and 55.9 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:15:36,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.62 ms. Allocated memory is still 81.8 MB. Free memory was 46.7 MB in the beginning and 51.2 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:15:36,982 INFO L168 Benchmark]: Boogie Preprocessor took 65.30 ms. Allocated memory is still 81.8 MB. Free memory was 51.2 MB in the beginning and 48.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:15:36,983 INFO L168 Benchmark]: RCFGBuilder took 819.25 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 48.5 MB in the beginning and 70.1 MB in the end (delta: -21.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:15:36,983 INFO L168 Benchmark]: TraceAbstraction took 3643.18 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 69.8 MB in the beginning and 78.8 MB in the end (delta: -8.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:15:36,984 INFO L168 Benchmark]: Witness Printer took 3.75 ms. Allocated memory is still 130.0 MB. Free memory was 78.8 MB in the beginning and 77.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:15:36,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 55.9 MB in the beginning and 55.9 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 552.62 ms. Allocated memory is still 81.8 MB. Free memory was 46.7 MB in the beginning and 51.2 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.30 ms. Allocated memory is still 81.8 MB. Free memory was 51.2 MB in the beginning and 48.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 819.25 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 48.5 MB in the beginning and 70.1 MB in the end (delta: -21.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3643.18 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 69.8 MB in the beginning and 78.8 MB in the end (delta: -8.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.75 ms. Allocated memory is still 130.0 MB. Free memory was 78.8 MB in the beginning and 77.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 3553.0ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 17.4ms, AutomataDifference: 2212.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 550 SDtfs, 955 SDslu, 735 SDs, 0 SdLazy, 2016 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1422.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 392.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 104.0ms AutomataMinimizationTime, 8 MinimizatonAttempts, 142 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.5ms SsaConstructionTime, 179.8ms SatisfiabilityAnalysisTime, 729.1ms InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:15:37,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:15:39,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:15:39,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:15:39,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:15:39,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:15:39,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:15:39,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:15:39,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:15:39,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:15:39,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:15:39,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:15:39,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:15:39,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:15:39,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:15:39,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:15:39,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:15:39,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:15:39,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:15:39,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:15:39,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:15:39,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:15:39,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:15:39,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:15:39,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:15:39,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:15:39,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:15:39,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:15:39,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:15:39,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:15:39,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:15:39,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:15:39,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:15:39,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:15:39,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:15:39,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:15:39,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:15:39,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:15:39,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:15:39,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:15:39,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:15:39,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:15:39,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 01:15:39,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:15:39,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:15:39,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:15:39,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:15:39,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:15:39,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:15:39,564 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:15:39,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:15:39,564 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:15:39,564 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:15:39,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:15:39,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:15:39,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:15:39,566 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:15:39,566 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:15:39,566 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:15:39,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:15:39,567 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:15:39,567 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:15:39,567 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:15:39,567 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:15:39,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:15:39,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:15:39,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:15:39,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:15:39,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:15:39,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:15:39,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:15:39,569 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:15:39,569 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:15:39,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:15:39,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:15:39,570 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_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2021-10-13 01:15:39,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:15:39,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:15:39,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:15:39,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:15:39,983 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:15:39,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-13 01:15:40,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data/9065b2c36/962d19a288d6427a9f9e50526dcee267/FLAGbd6555d4c [2021-10-13 01:15:40,632 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:15:40,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-13 01:15:40,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data/9065b2c36/962d19a288d6427a9f9e50526dcee267/FLAGbd6555d4c [2021-10-13 01:15:40,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/data/9065b2c36/962d19a288d6427a9f9e50526dcee267 [2021-10-13 01:15:40,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:15:40,942 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:15:40,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:15:40,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:15:40,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:15:40,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:40" (1/1) ... [2021-10-13 01:15:40,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a517864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:40, skipping insertion in model container [2021-10-13 01:15:40,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:40" (1/1) ... [2021-10-13 01:15:40,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:15:41,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:15:41,372 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-13 01:15:41,386 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-13 01:15:41,391 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-13 01:15:41,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:15:41,424 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:15:41,471 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-13 01:15:41,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-13 01:15:41,474 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-13 01:15:41,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:15:41,509 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:15:41,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41 WrapperNode [2021-10-13 01:15:41,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:15:41,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:15:41,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:15:41,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:15:41,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41" (1/1) ... [2021-10-13 01:15:41,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41" (1/1) ... [2021-10-13 01:15:41,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41" (1/1) ... [2021-10-13 01:15:41,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41" (1/1) ... [2021-10-13 01:15:41,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41" (1/1) ... [2021-10-13 01:15:41,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41" (1/1) ... [2021-10-13 01:15:41,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41" (1/1) ... [2021-10-13 01:15:41,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:15:41,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:15:41,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:15:41,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:15:41,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41" (1/1) ... [2021-10-13 01:15:41,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:15:41,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:15:41,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:15:41,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:15:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 01:15:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:15:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 01:15:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 01:15:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 01:15:41,656 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 01:15:41,656 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 01:15:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 01:15:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 01:15:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 01:15:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 01:15:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 01:15:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 01:15:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 01:15:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 01:15:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 01:15:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 01:15:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 01:15:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 01:15:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 01:15:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 01:15:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 01:15:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 01:15:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 01:15:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 01:15:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 01:15:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 01:15:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 01:15:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 01:15:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 01:15:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 01:15:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 01:15:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 01:15:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 01:15:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 01:15:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 01:15:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 01:15:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 01:15:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 01:15:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 01:15:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 01:15:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 01:15:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 01:15:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 01:15:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 01:15:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 01:15:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 01:15:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 01:15:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 01:15:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 01:15:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 01:15:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 01:15:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 01:15:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 01:15:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 01:15:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 01:15:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 01:15:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 01:15:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 01:15:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-13 01:15:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 01:15:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 01:15:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 01:15:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 01:15:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 01:15:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 01:15:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 01:15:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 01:15:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 01:15:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 01:15:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 01:15:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 01:15:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 01:15:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 01:15:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 01:15:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 01:15:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 01:15:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 01:15:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 01:15:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 01:15:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 01:15:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 01:15:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 01:15:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 01:15:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 01:15:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 01:15:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 01:15:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 01:15:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 01:15:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 01:15:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 01:15:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 01:15:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 01:15:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 01:15:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 01:15:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 01:15:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 01:15:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 01:15:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 01:15:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 01:15:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 01:15:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 01:15:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 01:15:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 01:15:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 01:15:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 01:15:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 01:15:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 01:15:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 01:15:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 01:15:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 01:15:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 01:15:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 01:15:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:15:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 01:15:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 01:15:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 01:15:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 01:15:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 01:15:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 01:15:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:15:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 01:15:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 01:15:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:15:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 01:15:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 01:15:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 01:15:42,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:15:42,525 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 01:15:42,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:42 BoogieIcfgContainer [2021-10-13 01:15:42,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:15:42,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:15:42,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:15:42,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:15:42,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:15:40" (1/3) ... [2021-10-13 01:15:42,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e00c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:42, skipping insertion in model container [2021-10-13 01:15:42,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:41" (2/3) ... [2021-10-13 01:15:42,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e00c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:42, skipping insertion in model container [2021-10-13 01:15:42,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:42" (3/3) ... [2021-10-13 01:15:42,545 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-13 01:15:42,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:15:42,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-13 01:15:42,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:15:42,614 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, mConcurrency=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 [2021-10-13 01:15:42,614 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-13 01:15:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 01:15:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:15:42,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:42,670 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:42,671 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:42,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:42,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1605522735, now seen corresponding path program 1 times [2021-10-13 01:15:42,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:15:42,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409026033] [2021-10-13 01:15:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:42,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:15:42,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:15:42,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:15:42,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:15:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:42,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:15:42,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:15:42,946 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 [2021-10-13 01:15:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:42,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:15:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:43,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:15:43,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409026033] [2021-10-13 01:15:43,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409026033] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:43,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:43,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 01:15:43,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873031047] [2021-10-13 01:15:43,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:15:43,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:15:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:15:43,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:15:43,044 INFO L87 Difference]: Start difference. First operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2021-10-13 01:15:43,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:43,324 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-10-13 01:15:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:15:43,325 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 [2021-10-13 01:15:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:43,335 INFO L225 Difference]: With dead ends: 125 [2021-10-13 01:15:43,335 INFO L226 Difference]: Without dead ends: 121 [2021-10-13 01:15:43,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:15:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-13 01:15:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-10-13 01:15:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 65 states have (on average 1.8615384615384616) internal successors, (121), 113 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2021-10-13 01:15:43,390 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 7 [2021-10-13 01:15:43,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:43,391 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2021-10-13 01:15:43,391 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) [2021-10-13 01:15:43,392 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2021-10-13 01:15:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:15:43,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:43,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:43,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:15:43,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:15:43,616 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1605522736, now seen corresponding path program 1 times [2021-10-13 01:15:43,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:15:43,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892319499] [2021-10-13 01:15:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:43,626 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:15:43,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:15:43,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:15:43,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:15:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:43,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:15:43,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:15:43,795 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 [2021-10-13 01:15:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:43,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:15:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:43,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:15:43,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892319499] [2021-10-13 01:15:43,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892319499] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:43,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:43,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 01:15:43,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854379453] [2021-10-13 01:15:43,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:15:43,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:15:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:15:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:15:43,883 INFO L87 Difference]: Start difference. First operand 117 states and 124 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) [2021-10-13 01:15:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:44,222 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-10-13 01:15:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:15:44,223 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 [2021-10-13 01:15:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:44,225 INFO L225 Difference]: With dead ends: 135 [2021-10-13 01:15:44,225 INFO L226 Difference]: Without dead ends: 135 [2021-10-13 01:15:44,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:15:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-13 01:15:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-10-13 01:15:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 72 states have (on average 1.75) internal successors, (126), 118 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-10-13 01:15:44,236 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2021-10-13 01:15:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:44,237 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-10-13 01:15:44,237 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) [2021-10-13 01:15:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-10-13 01:15:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:15:44,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:44,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:44,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:15:44,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:15:44,453 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:44,453 INFO L82 PathProgramCache]: Analyzing trace with hash -417821773, now seen corresponding path program 1 times [2021-10-13 01:15:44,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:15:44,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85110055] [2021-10-13 01:15:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:44,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:15:44,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:15:44,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:15:44,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:15:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:44,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:15:44,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:15:44,647 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 [2021-10-13 01:15:44,727 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 01:15:44,728 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 19 treesize of output 24 [2021-10-13 01:15:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:44,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:15:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:44,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:15:44,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85110055] [2021-10-13 01:15:44,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85110055] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:44,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:44,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 01:15:44,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280091349] [2021-10-13 01:15:44,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:15:44,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:15:44,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:15:44,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:15:44,874 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 01:15:45,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:15:45,282 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-10-13 01:15:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:15:45,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-10-13 01:15:45,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:15:45,287 INFO L225 Difference]: With dead ends: 129 [2021-10-13 01:15:45,287 INFO L226 Difference]: Without dead ends: 129 [2021-10-13 01:15:45,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:15:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-13 01:15:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2021-10-13 01:15:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.6133333333333333) internal successors, (121), 110 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:15:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-10-13 01:15:45,299 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 11 [2021-10-13 01:15:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:15:45,299 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-10-13 01:15:45,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 01:15:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-10-13 01:15:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:15:45,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:15:45,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:15:45,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 01:15:45,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:15:45,511 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:15:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:15:45,512 INFO L82 PathProgramCache]: Analyzing trace with hash -417821772, now seen corresponding path program 1 times [2021-10-13 01:15:45,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:15:45,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021159875] [2021-10-13 01:15:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:15:45,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:15:45,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:15:45,514 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:15:45,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 01:15:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:15:45,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:15:45,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:15:45,683 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 [2021-10-13 01:15:45,689 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 [2021-10-13 01:15:45,831 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 01:15:45,832 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 30 treesize of output 32 [2021-10-13 01:15:45,842 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 01:15:45,842 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 29 treesize of output 29 [2021-10-13 01:15:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:45,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:15:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:15:48,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:15:48,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021159875] [2021-10-13 01:15:48,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021159875] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:15:48,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:15:48,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 01:15:48,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953702578] [2021-10-13 01:15:48,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:15:48,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:15:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:15:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-13 01:15:48,704 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2021-10-13 01:16:00,624 WARN L207 SmtUtils]: Spent 6.36 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-13 01:16:10,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:10,492 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2021-10-13 01:16:10,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:16:10,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 11 [2021-10-13 01:16:10,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:10,494 INFO L225 Difference]: With dead ends: 161 [2021-10-13 01:16:10,495 INFO L226 Difference]: Without dead ends: 161 [2021-10-13 01:16:10,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 21607.2ms TimeCoverageRelationStatistics Valid=68, Invalid=112, Unknown=2, NotChecked=0, Total=182 [2021-10-13 01:16:10,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-13 01:16:10,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 111. [2021-10-13 01:16:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 107 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:16:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-10-13 01:16:10,506 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 11 [2021-10-13 01:16:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:10,507 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-10-13 01:16:10,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2021-10-13 01:16:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-10-13 01:16:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 01:16:10,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:10,508 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:10,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:10,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:16:10,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:16:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:10,716 INFO L82 PathProgramCache]: Analyzing trace with hash -2094783426, now seen corresponding path program 1 times [2021-10-13 01:16:10,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:16:10,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922987191] [2021-10-13 01:16:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:10,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:16:10,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:16:10,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:16:10,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 01:16:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:10,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:16:10,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:10,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:16:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:11,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:16:11,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922987191] [2021-10-13 01:16:11,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922987191] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:11,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:11,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 01:16:11,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833542745] [2021-10-13 01:16:11,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:16:11,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:16:11,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:16:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:16:11,031 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-13 01:16:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:11,437 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2021-10-13 01:16:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:16:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2021-10-13 01:16:11,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:11,440 INFO L225 Difference]: With dead ends: 132 [2021-10-13 01:16:11,440 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 01:16:11,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:16:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 01:16:11,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2021-10-13 01:16:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 77 states have (on average 1.4805194805194806) internal successors, (114), 105 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:16:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2021-10-13 01:16:11,453 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 13 [2021-10-13 01:16:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:11,453 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2021-10-13 01:16:11,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-13 01:16:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2021-10-13 01:16:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 01:16:11,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:11,455 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:11,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:11,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:16:11,660 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:16:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:11,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1270832053, now seen corresponding path program 1 times [2021-10-13 01:16:11,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:16:11,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18245652] [2021-10-13 01:16:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:11,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:16:11,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:16:11,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:16:11,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 01:16:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:11,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:16:11,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:11,857 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 [2021-10-13 01:16:11,877 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 20 treesize of output 16 [2021-10-13 01:16:11,915 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 21 treesize of output 13 [2021-10-13 01:16:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:11,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:16:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:12,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:16:12,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18245652] [2021-10-13 01:16:12,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18245652] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:12,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:12,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 01:16:12,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90814475] [2021-10-13 01:16:12,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:16:12,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:16:12,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:16:12,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:16:12,075 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:16:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:12,864 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-10-13 01:16:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:16:12,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-13 01:16:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:12,866 INFO L225 Difference]: With dead ends: 112 [2021-10-13 01:16:12,866 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 01:16:12,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:16:12,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 01:16:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2021-10-13 01:16:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 104 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:16:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-10-13 01:16:12,874 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 15 [2021-10-13 01:16:12,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:12,875 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-10-13 01:16:12,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:16:12,875 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-10-13 01:16:12,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 01:16:12,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:12,876 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:12,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:13,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:16:13,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:16:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:13,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1270832054, now seen corresponding path program 1 times [2021-10-13 01:16:13,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:16:13,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848114013] [2021-10-13 01:16:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:13,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:16:13,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:16:13,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:16:13,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 01:16:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:13,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:16:13,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:13,305 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 [2021-10-13 01:16:13,354 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 17 treesize of output 13 [2021-10-13 01:16:13,365 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 11 treesize of output 7 [2021-10-13 01:16:13,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-13 01:16:13,432 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 20 treesize of output 12 [2021-10-13 01:16:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:13,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:16:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:13,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:16:13,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848114013] [2021-10-13 01:16:13,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848114013] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:13,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:13,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 01:16:13,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508282969] [2021-10-13 01:16:13,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:16:13,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:16:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:16:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:16:13,967 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:16:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:16,078 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2021-10-13 01:16:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:16:16,079 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-13 01:16:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:16,080 INFO L225 Difference]: With dead ends: 127 [2021-10-13 01:16:16,080 INFO L226 Difference]: Without dead ends: 127 [2021-10-13 01:16:16,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 721.1ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-13 01:16:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-13 01:16:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 105. [2021-10-13 01:16:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 101 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:16:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2021-10-13 01:16:16,088 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 15 [2021-10-13 01:16:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:16,088 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2021-10-13 01:16:16,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:16:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2021-10-13 01:16:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:16:16,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:16,090 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:16,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:16,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:16:16,302 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:16:16,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:16,303 INFO L82 PathProgramCache]: Analyzing trace with hash 185778926, now seen corresponding path program 1 times [2021-10-13 01:16:16,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:16:16,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305128841] [2021-10-13 01:16:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:16,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:16:16,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:16:16,304 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:16:16,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 01:16:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:16,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:16:16,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:16,479 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 [2021-10-13 01:16:16,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-13 01:16:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:16,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:16:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:16,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:16:16,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305128841] [2021-10-13 01:16:16,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305128841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:16,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:16,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 01:16:16,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020936271] [2021-10-13 01:16:16,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:16:16,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:16:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:16:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:16:16,695 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-13 01:16:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:17,243 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-10-13 01:16:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:16:17,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 16 [2021-10-13 01:16:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:17,245 INFO L225 Difference]: With dead ends: 166 [2021-10-13 01:16:17,245 INFO L226 Difference]: Without dead ends: 166 [2021-10-13 01:16:17,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:16:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-13 01:16:17,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 111. [2021-10-13 01:16:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 107 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:16:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-10-13 01:16:17,252 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 16 [2021-10-13 01:16:17,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:17,252 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-10-13 01:16:17,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-13 01:16:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-10-13 01:16:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 01:16:17,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:17,254 INFO L512 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] [2021-10-13 01:16:17,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:17,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:16:17,464 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 01:16:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:17,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1669963529, now seen corresponding path program 1 times [2021-10-13 01:16:17,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:16:17,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522298493] [2021-10-13 01:16:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:17,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:16:17,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:16:17,466 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:16:17,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 01:16:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:16:17,626 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:16:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:16:17,701 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 01:16:17,702 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:16:17,702 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 01:16:17,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 01:16:17,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-13 01:16:17,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 01:16:17,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 01:16:17,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 01:16:17,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 01:16:17,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-13 01:16:17,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-13 01:16:17,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-13 01:16:17,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-13 01:16:17,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-13 01:16:17,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-13 01:16:17,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-13 01:16:17,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-13 01:16:17,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-13 01:16:17,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-13 01:16:17,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-13 01:16:17,707 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-13 01:16:17,707 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-13 01:16:17,707 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-13 01:16:17,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-13 01:16:17,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-13 01:16:17,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 01:16:17,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-13 01:16:17,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-13 01:16:17,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 01:16:17,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-13 01:16:17,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-13 01:16:17,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-13 01:16:17,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-13 01:16:17,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-13 01:16:17,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-13 01:16:17,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-13 01:16:17,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-13 01:16:17,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-13 01:16:17,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-13 01:16:17,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-13 01:16:17,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-13 01:16:17,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-13 01:16:17,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-13 01:16:17,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:16:17,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:16:17,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:16:17,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-13 01:16:17,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-13 01:16:17,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:16:17,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:16:17,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:16:17,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-13 01:16:17,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-13 01:16:17,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:16:17,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:16:17,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:16:17,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 01:16:17,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:17,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:16:17,938 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:16:17,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:16:17 BoogieIcfgContainer [2021-10-13 01:16:17,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:16:17,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:16:17,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:16:17,965 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:16:17,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:42" (3/4) ... [2021-10-13 01:16:17,969 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:16:17,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:16:17,970 INFO L168 Benchmark]: Toolchain (without parser) took 37028.35 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 45.7 MB in the beginning and 38.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:17,971 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 67.1 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:16:17,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.35 ms. Allocated memory is still 67.1 MB. Free memory was 45.4 MB in the beginning and 42.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:17,972 INFO L168 Benchmark]: Boogie Preprocessor took 70.03 ms. Allocated memory is still 67.1 MB. Free memory was 42.5 MB in the beginning and 39.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:17,972 INFO L168 Benchmark]: RCFGBuilder took 950.85 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 32.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:17,973 INFO L168 Benchmark]: TraceAbstraction took 35429.58 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 32.0 MB in the beginning and 38.5 MB in the end (delta: -6.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:17,973 INFO L168 Benchmark]: Witness Printer took 4.90 ms. Allocated memory is still 90.2 MB. Free memory is still 38.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:16:17,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 67.1 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 565.35 ms. Allocated memory is still 67.1 MB. Free memory was 45.4 MB in the beginning and 42.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.03 ms. Allocated memory is still 67.1 MB. Free memory was 42.5 MB in the beginning and 39.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 950.85 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 32.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35429.58 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 32.0 MB in the beginning and 38.5 MB in the end (delta: -6.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.90 ms. Allocated memory is still 90.2 MB. Free memory is still 38.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={1:0}, list={1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1039] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1043] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 133 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 35333.4ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 45.1ms, AutomataDifference: 26731.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 535 SDtfs, 957 SDslu, 902 SDs, 0 SdLazy, 1482 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6220.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 22679.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 106.0ms AutomataMinimizationTime, 8 MinimizatonAttempts, 186 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 76.5ms SsaConstructionTime, 276.4ms SatisfiabilityAnalysisTime, 4956.2ms InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 174 ConstructedInterpolants, 5 QuantifiedInterpolants, 873 SizeOfPredicates, 23 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:16:18,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b300c17-47c7-468c-b950-39a5df0af51c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...