./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD --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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD --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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:13:10,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:13:10,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:13:10,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:13:10,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:13:10,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:13:10,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:13:10,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:13:10,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:13:10,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:13:10,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:13:10,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:13:10,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:13:10,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:13:10,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:13:10,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:13:10,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:13:10,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:13:10,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:13:10,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:13:10,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:13:10,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:13:10,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:13:10,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:13:10,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:13:10,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:13:10,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:13:10,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:13:10,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:13:10,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:13:10,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:13:10,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:13:10,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:13:10,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:13:10,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:13:10,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:13:10,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:13:10,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:13:10,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:13:10,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:13:10,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:13:10,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:13:10,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:13:10,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:13:10,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:13:10,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:13:10,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:13:10,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:13:10,638 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:13:10,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:13:10,639 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:13:10,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:13:10,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:13:10,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:13:10,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:13:10,641 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:13:10,641 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:13:10,641 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:13:10,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:13:10,642 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:13:10,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:13:10,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:13:10,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:13:10,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:13:10,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:13:10,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:13:10,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:13:10,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:13:10,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:13:10,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:13:10,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:13:10,646 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-10-28 23:13:10,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:13:10,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:13:10,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:13:10,988 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:13:10,989 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:13:10,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-28 23:13:11,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data/3785df679/0c3175402096438f90bafa08d98956e9/FLAGbe9c2b422 [2021-10-28 23:13:11,786 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:13:11,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-28 23:13:11,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data/3785df679/0c3175402096438f90bafa08d98956e9/FLAGbe9c2b422 [2021-10-28 23:13:12,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data/3785df679/0c3175402096438f90bafa08d98956e9 [2021-10-28 23:13:12,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:13:12,088 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:13:12,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:13:12,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:13:12,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:13:12,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d505e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12, skipping insertion in model container [2021-10-28 23:13:12,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:13:12,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:13:12,511 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-28 23:13:12,517 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-28 23:13:12,522 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-28 23:13:12,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:13:12,550 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:13:12,617 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-28 23:13:12,618 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-28 23:13:12,622 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-28 23:13:12,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:13:12,659 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:13:12,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12 WrapperNode [2021-10-28 23:13:12,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:13:12,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:13:12,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:13:12,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:13:12,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:13:12,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:13:12,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:13:12,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:13:12,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12" (1/1) ... [2021-10-28 23:13:12,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:13:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:13:12,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:13:12,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:13:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:13:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:13:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:13:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:13:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:13:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:13:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:13:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:13:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:13:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:13:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:13:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:13:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:13:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:13:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:13:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:13:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:13:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:13:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:13:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:13:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:13:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:13:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:13:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:13:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:13:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:13:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:13:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:13:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:13:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:13:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:13:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:13:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:13:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:13:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:13:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:13:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:13:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:13:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:13:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:13:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:13:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:13:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:13:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:13:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:13:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:13:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:13:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:13:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:13:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:13:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:13:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:13:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:13:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:13:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:13:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:13:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:13:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:13:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:13:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:13:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:13:12,863 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:13:12,864 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:13:12,864 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:13:12,865 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:13:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:13:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:13:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:13:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:13:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:13:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:13:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:13:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:13:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:13:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:13:12,868 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:13:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:13:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:13:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:13:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:13:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:13:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:13:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:13:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:13:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:13:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:13:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:13:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:13:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:13:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:13:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:13:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:13:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:13:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:13:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:13:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:13:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:13:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:13:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:13:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:13:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:13:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:13:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:13:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:13:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:13:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:13:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:13:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:13:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:13:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:13:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:13:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:13:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:13:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:13:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:13:12,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:13:12,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:13:12,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:13:12,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:13:12,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:13:12,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:13:12,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:13:12,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:13:13,596 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:13:13,596 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 23:13:13,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:13:13 BoogieIcfgContainer [2021-10-28 23:13:13,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:13:13,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:13:13,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:13:13,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:13:13,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:13:12" (1/3) ... [2021-10-28 23:13:13,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cba1ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:13:13, skipping insertion in model container [2021-10-28 23:13:13,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:12" (2/3) ... [2021-10-28 23:13:13,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cba1ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:13:13, skipping insertion in model container [2021-10-28 23:13:13,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:13:13" (3/3) ... [2021-10-28 23:13:13,613 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-28 23:13:13,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:13:13,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-28 23:13:13,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:13:13,680 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:13:13,680 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-28 23:13:13,701 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) [2021-10-28 23:13:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:13:13,709 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:13,710 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:13,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash 384543771, now seen corresponding path program 1 times [2021-10-28 23:13:13,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:13,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241946534] [2021-10-28 23:13:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:13,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:13:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:13,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:13,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241946534] [2021-10-28 23:13:13,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241946534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:13,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:13,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:13,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826401794] [2021-10-28 23:13:14,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:13:14,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:14,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:13:14,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:13:14,023 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) [2021-10-28 23:13:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:14,396 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-10-28 23:13:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:13:14,398 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 [2021-10-28 23:13:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:14,411 INFO L225 Difference]: With dead ends: 127 [2021-10-28 23:13:14,411 INFO L226 Difference]: Without dead ends: 123 [2021-10-28 23:13:14,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:13:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-28 23:13:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-10-28 23:13:14,470 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) [2021-10-28 23:13:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2021-10-28 23:13:14,478 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 7 [2021-10-28 23:13:14,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:14,479 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2021-10-28 23:13:14,479 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) [2021-10-28 23:13:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2021-10-28 23:13:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:13:14,481 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:14,481 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:14,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:13:14,482 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:14,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:14,483 INFO L85 PathProgramCache]: Analyzing trace with hash 384543772, now seen corresponding path program 1 times [2021-10-28 23:13:14,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:14,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346702636] [2021-10-28 23:13:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:14,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:13:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:14,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:14,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346702636] [2021-10-28 23:13:14,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346702636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:14,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:14,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:14,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545599220] [2021-10-28 23:13:14,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:13:14,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:14,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:13:14,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:13:14,657 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) [2021-10-28 23:13:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:14,963 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-10-28 23:13:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:13:14,964 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 [2021-10-28 23:13:14,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:14,971 INFO L225 Difference]: With dead ends: 137 [2021-10-28 23:13:14,971 INFO L226 Difference]: Without dead ends: 137 [2021-10-28 23:13:14,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:13:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-28 23:13:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 124. [2021-10-28 23:13:14,995 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) [2021-10-28 23:13:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-10-28 23:13:15,000 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 7 [2021-10-28 23:13:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:15,000 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-10-28 23:13:15,001 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) [2021-10-28 23:13:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-10-28 23:13:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:13:15,002 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:15,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:15,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:13:15,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash 849124794, now seen corresponding path program 1 times [2021-10-28 23:13:15,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:15,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888229511] [2021-10-28 23:13:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:15,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:13:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:15,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:15,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888229511] [2021-10-28 23:13:15,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888229511] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:15,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:15,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:13:15,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19978662] [2021-10-28 23:13:15,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:13:15,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:15,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:13:15,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:13:15,130 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) [2021-10-28 23:13:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:15,407 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2021-10-28 23:13:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:13:15,408 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 [2021-10-28 23:13:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:15,409 INFO L225 Difference]: With dead ends: 131 [2021-10-28 23:13:15,410 INFO L226 Difference]: Without dead ends: 131 [2021-10-28 23:13:15,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:13:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-28 23:13:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2021-10-28 23:13:15,416 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) [2021-10-28 23:13:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-10-28 23:13:15,423 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2021-10-28 23:13:15,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:15,424 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-10-28 23:13:15,424 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) [2021-10-28 23:13:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-10-28 23:13:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:13:15,425 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:15,426 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:15,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:13:15,427 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:15,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:15,431 INFO L85 PathProgramCache]: Analyzing trace with hash 849124795, now seen corresponding path program 1 times [2021-10-28 23:13:15,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:15,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321747289] [2021-10-28 23:13:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:15,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:13:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:15,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:15,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321747289] [2021-10-28 23:13:15,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321747289] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:15,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:15,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:13:15,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870311288] [2021-10-28 23:13:15,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:13:15,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:15,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:13:15,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:13:15,616 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) [2021-10-28 23:13:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:15,961 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2021-10-28 23:13:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:13:15,962 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 [2021-10-28 23:13:15,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:15,964 INFO L225 Difference]: With dead ends: 155 [2021-10-28 23:13:15,964 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 23:13:15,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:13:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 23:13:15,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 126. [2021-10-28 23:13:15,971 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) [2021-10-28 23:13:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-10-28 23:13:15,974 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 12 [2021-10-28 23:13:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:15,974 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-10-28 23:13:15,974 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) [2021-10-28 23:13:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-10-28 23:13:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:13:15,975 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:15,975 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:15,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:13:15,976 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:15,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:15,977 INFO L85 PathProgramCache]: Analyzing trace with hash -34876986, now seen corresponding path program 1 times [2021-10-28 23:13:15,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:15,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985343499] [2021-10-28 23:13:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:15,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:13:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:16,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:16,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985343499] [2021-10-28 23:13:16,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985343499] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:16,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:16,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:13:16,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321822778] [2021-10-28 23:13:16,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:13:16,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:13:16,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:13:16,047 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) [2021-10-28 23:13:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:16,244 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-10-28 23:13:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:13:16,245 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 [2021-10-28 23:13:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:16,246 INFO L225 Difference]: With dead ends: 140 [2021-10-28 23:13:16,246 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 23:13:16,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:13:16,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 23:13:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-10-28 23:13:16,252 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) [2021-10-28 23:13:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-10-28 23:13:16,254 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 14 [2021-10-28 23:13:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:16,254 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-10-28 23:13:16,255 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) [2021-10-28 23:13:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-10-28 23:13:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:13:16,256 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:16,256 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:16,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:13:16,256 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:16,257 INFO L85 PathProgramCache]: Analyzing trace with hash 860042492, now seen corresponding path program 1 times [2021-10-28 23:13:16,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:16,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924631802] [2021-10-28 23:13:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:16,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:13:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:16,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:16,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924631802] [2021-10-28 23:13:16,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924631802] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:16,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:16,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:13:16,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333986951] [2021-10-28 23:13:16,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:13:16,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:16,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:13:16,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:13:16,355 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) [2021-10-28 23:13:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:16,680 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-10-28 23:13:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:13:16,681 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 [2021-10-28 23:13:16,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:16,682 INFO L225 Difference]: With dead ends: 125 [2021-10-28 23:13:16,682 INFO L226 Difference]: Without dead ends: 125 [2021-10-28 23:13:16,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:13:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-28 23:13:16,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-10-28 23:13:16,687 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) [2021-10-28 23:13:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-10-28 23:13:16,689 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-10-28 23:13:16,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:16,689 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-10-28 23:13:16,689 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) [2021-10-28 23:13:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-10-28 23:13:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:13:16,690 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:16,690 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:16,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:13:16,691 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash 860042493, now seen corresponding path program 1 times [2021-10-28 23:13:16,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:16,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170725131] [2021-10-28 23:13:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:16,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:13:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:16,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:16,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170725131] [2021-10-28 23:13:16,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170725131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:16,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:16,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:13:16,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376245485] [2021-10-28 23:13:16,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:13:16,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:13:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:13:16,820 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) [2021-10-28 23:13:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:17,165 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-10-28 23:13:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:13:17,165 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 [2021-10-28 23:13:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:17,166 INFO L225 Difference]: With dead ends: 125 [2021-10-28 23:13:17,166 INFO L226 Difference]: Without dead ends: 125 [2021-10-28 23:13:17,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:13:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-28 23:13:17,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2021-10-28 23:13:17,171 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) [2021-10-28 23:13:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-10-28 23:13:17,172 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 16 [2021-10-28 23:13:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:17,173 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-10-28 23:13:17,173 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) [2021-10-28 23:13:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-10-28 23:13:17,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:13:17,174 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:17,174 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:17,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:13:17,174 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:17,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash 365787858, now seen corresponding path program 1 times [2021-10-28 23:13:17,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:17,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689900694] [2021-10-28 23:13:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:17,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:13:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:17,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:17,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689900694] [2021-10-28 23:13:17,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689900694] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:17,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:17,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:13:17,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684483242] [2021-10-28 23:13:17,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:13:17,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:13:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:13:17,260 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) [2021-10-28 23:13:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:17,539 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-10-28 23:13:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:13:17,539 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 [2021-10-28 23:13:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:17,540 INFO L225 Difference]: With dead ends: 181 [2021-10-28 23:13:17,541 INFO L226 Difference]: Without dead ends: 181 [2021-10-28 23:13:17,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:13:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-28 23:13:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 125. [2021-10-28 23:13:17,544 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) [2021-10-28 23:13:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-10-28 23:13:17,545 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 17 [2021-10-28 23:13:17,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:17,546 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-10-28 23:13:17,546 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) [2021-10-28 23:13:17,546 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-10-28 23:13:17,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:13:17,547 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:17,547 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:17,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:13:17,548 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:17,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:17,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1043040677, now seen corresponding path program 1 times [2021-10-28 23:13:17,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:17,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905686214] [2021-10-28 23:13:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:17,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:13:17,573 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:13:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:13:17,611 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:13:17,611 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:13:17,612 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:17,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:13:17,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:13:17,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:13:17,617 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:13:17,617 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:13:17,617 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:13:17,617 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:13:17,617 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:13:17,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:13:17,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:13:17,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:13:17,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:13:17,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:13:17,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:13:17,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:13:17,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:13:17,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:13:17,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:13:17,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:13:17,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:13:17,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:13:17,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:13:17,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:17,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:13:17,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 23:13:17,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:17,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 23:13:17,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 23:13:17,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 23:13:17,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 23:13:17,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 23:13:17,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 23:13:17,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 23:13:17,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 23:13:17,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 23:13:17,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 23:13:17,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 23:13:17,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 23:13:17,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 23:13:17,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-28 23:13:17,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:17,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:17,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:17,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-28 23:13:17,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-28 23:13:17,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:17,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:17,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:17,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 23:13:17,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 23:13:17,627 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:17,630 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:17,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:17,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:17,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:13:17,635 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:17,639 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:13:17,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:13:17 BoogieIcfgContainer [2021-10-28 23:13:17,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:13:17,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:13:17,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:13:17,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:13:17,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:13:13" (3/4) ... [2021-10-28 23:13:17,688 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:13:17,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:13:17,690 INFO L168 Benchmark]: Toolchain (without parser) took 5609.03 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 64.0 MB in the beginning and 94.1 MB in the end (delta: -30.1 MB). Peak memory consumption was 279.0 kB. Max. memory is 16.1 GB. [2021-10-28 23:13:17,691 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 50.1 MB in the beginning and 50.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:13:17,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.43 ms. Allocated memory is still 98.6 MB. Free memory was 64.0 MB in the beginning and 69.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:17,692 INFO L168 Benchmark]: Boogie Preprocessor took 73.11 ms. Allocated memory is still 98.6 MB. Free memory was 69.0 MB in the beginning and 66.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:17,693 INFO L168 Benchmark]: RCFGBuilder took 865.05 ms. Allocated memory is still 98.6 MB. Free memory was 66.1 MB in the beginning and 41.5 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:17,694 INFO L168 Benchmark]: TraceAbstraction took 4081.56 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 40.9 MB in the beginning and 94.1 MB in the end (delta: -53.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:13:17,694 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 127.9 MB. Free memory is still 94.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:13:17,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 50.1 MB in the beginning and 50.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 569.43 ms. Allocated memory is still 98.6 MB. Free memory was 64.0 MB in the beginning and 69.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.11 ms. Allocated memory is still 98.6 MB. Free memory was 69.0 MB in the beginning and 66.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 865.05 ms. Allocated memory is still 98.6 MB. Free memory was 66.1 MB in the beginning and 41.5 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4081.56 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 40.9 MB in the beginning and 94.1 MB in the end (delta: -53.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.11 ms. Allocated memory is still 127.9 MB. Free memory is still 94.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: 3.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 550 SDtfs, 955 SDslu, 735 SDs, 0 SdLazy, 2016 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 142 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s 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 [2021-10-28 23:13:17,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:13:20,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:13:20,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:13:20,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:13:20,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:13:20,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:13:20,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:13:20,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:13:20,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:13:20,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:13:20,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:13:20,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:13:20,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:13:20,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:13:20,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:13:20,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:13:20,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:13:20,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:13:20,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:13:20,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:13:20,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:13:20,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:13:20,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:13:20,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:13:20,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:13:20,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:13:20,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:13:20,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:13:20,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:13:20,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:13:20,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:13:20,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:13:20,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:13:20,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:13:20,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:13:20,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:13:20,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:13:20,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:13:20,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:13:20,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:13:20,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:13:20,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:13:20,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:13:20,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:13:20,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:13:20,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:13:20,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:13:20,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:13:20,616 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:13:20,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:13:20,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:13:20,617 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:13:20,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:13:20,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:13:20,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:13:20,619 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:13:20,620 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:13:20,620 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:13:20,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:13:20,621 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:13:20,621 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:13:20,621 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:13:20,621 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:13:20,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:13:20,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:13:20,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:13:20,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:13:20,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:13:20,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:13:20,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:13:20,624 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:13:20,624 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:13:20,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:13:20,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:13:20,625 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-10-28 23:13:21,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:13:21,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:13:21,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:13:21,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:13:21,089 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:13:21,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-28 23:13:21,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data/a2336c493/229d577954c54044b0ec68b155791a4d/FLAG530e351f4 [2021-10-28 23:13:21,884 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:13:21,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-28 23:13:21,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data/a2336c493/229d577954c54044b0ec68b155791a4d/FLAG530e351f4 [2021-10-28 23:13:22,194 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/data/a2336c493/229d577954c54044b0ec68b155791a4d [2021-10-28 23:13:22,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:13:22,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:13:22,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:13:22,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:13:22,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:13:22,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2a4140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22, skipping insertion in model container [2021-10-28 23:13:22,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:13:22,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:13:22,628 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-28 23:13:22,633 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-28 23:13:22,638 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-28 23:13:22,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:13:22,674 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:13:22,743 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-28 23:13:22,747 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-28 23:13:22,751 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_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-28 23:13:22,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:13:22,809 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:13:22,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22 WrapperNode [2021-10-28 23:13:22,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:13:22,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:13:22,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:13:22,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:13:22,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:13:22,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:13:22,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:13:22,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:13:22,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22" (1/1) ... [2021-10-28 23:13:22,968 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:13:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:13:22,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:13:23,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:13:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:13:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:13:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:13:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:13:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:13:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:13:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:13:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:13:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:13:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:13:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:13:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:13:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:13:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:13:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:13:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:13:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:13:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:13:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:13:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:13:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:13:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:13:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:13:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:13:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:13:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:13:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:13:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:13:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:13:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:13:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:13:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:13:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:13:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:13:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:13:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:13:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:13:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:13:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:13:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:13:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:13:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:13:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:13:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:13:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:13:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:13:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:13:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:13:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:13:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:13:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:13:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:13:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:13:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:13:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:13:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:13:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:13:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:13:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:13:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:13:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:13:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:13:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:13:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:13:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:13:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:13:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:13:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:13:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:13:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:13:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:13:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:13:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:13:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:13:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:13:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:13:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:13:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:13:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:13:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:13:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:13:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:13:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:13:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:13:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:13:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:13:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:13:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:13:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:13:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:13:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:13:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:13:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:13:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:13:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:13:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:13:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:13:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:13:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:13:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:13:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:13:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:13:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:13:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:13:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:13:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:13:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:13:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:13:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:13:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:13:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:13:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:13:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:13:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:13:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:13:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:13:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:13:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:13:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:13:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:13:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:13:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:13:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:13:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:13:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:13:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:13:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:13:23,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:13:23,979 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 23:13:23,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:13:23 BoogieIcfgContainer [2021-10-28 23:13:23,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:13:23,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:13:23,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:13:23,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:13:23,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:13:22" (1/3) ... [2021-10-28 23:13:23,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c294ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:13:23, skipping insertion in model container [2021-10-28 23:13:23,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:22" (2/3) ... [2021-10-28 23:13:23,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c294ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:13:23, skipping insertion in model container [2021-10-28 23:13:23,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:13:23" (3/3) ... [2021-10-28 23:13:23,991 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-28 23:13:23,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:13:23,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-28 23:13:24,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:13:24,055 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:13:24,056 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-28 23:13:24,074 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) [2021-10-28 23:13:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:13:24,083 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:24,111 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:24,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:24,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1605522735, now seen corresponding path program 1 times [2021-10-28 23:13:24,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:24,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787901266] [2021-10-28 23:13:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:24,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:24,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:24,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:13:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:24,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:13:24,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:13:24,461 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 [2021-10-28 23:13:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:24,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:13:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:24,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:24,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787901266] [2021-10-28 23:13:24,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787901266] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:24,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:24,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:13:24,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051281079] [2021-10-28 23:13:24,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:24,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:24,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:24,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:24,581 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) [2021-10-28 23:13:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:24,904 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-10-28 23:13:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:24,906 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 [2021-10-28 23:13:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:24,918 INFO L225 Difference]: With dead ends: 125 [2021-10-28 23:13:24,918 INFO L226 Difference]: Without dead ends: 121 [2021-10-28 23:13:24,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-28 23:13:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-10-28 23:13:24,972 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) [2021-10-28 23:13:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2021-10-28 23:13:24,980 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 7 [2021-10-28 23:13:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:24,981 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2021-10-28 23:13:24,982 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) [2021-10-28 23:13:24,982 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2021-10-28 23:13:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:13:24,983 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:24,983 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:25,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:13:25,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:25,196 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:25,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1605522736, now seen corresponding path program 1 times [2021-10-28 23:13:25,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:25,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155660582] [2021-10-28 23:13:25,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:25,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:25,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:25,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:25,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:13:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:25,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:13:25,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:13:25,403 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 [2021-10-28 23:13:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:25,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:13:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:25,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:25,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155660582] [2021-10-28 23:13:25,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155660582] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:25,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:25,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 23:13:25,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602303511] [2021-10-28 23:13:25,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:13:25,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:13:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:13:25,542 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) [2021-10-28 23:13:25,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:25,954 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-10-28 23:13:25,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:13:25,956 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 [2021-10-28 23:13:25,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:25,957 INFO L225 Difference]: With dead ends: 135 [2021-10-28 23:13:25,957 INFO L226 Difference]: Without dead ends: 135 [2021-10-28 23:13:25,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:13:25,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-28 23:13:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-10-28 23:13:25,967 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) [2021-10-28 23:13:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-10-28 23:13:25,969 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2021-10-28 23:13:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:25,970 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-10-28 23:13:25,970 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) [2021-10-28 23:13:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-10-28 23:13:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:13:25,970 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:25,971 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:25,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 23:13:26,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:26,171 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:26,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash -417821773, now seen corresponding path program 1 times [2021-10-28 23:13:26,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:26,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418638234] [2021-10-28 23:13:26,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:26,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:26,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:26,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:26,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:13:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:26,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:13:26,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:13:26,366 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 [2021-10-28 23:13:26,450 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 23:13:26,451 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 [2021-10-28 23:13:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:26,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:13:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:26,588 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:26,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418638234] [2021-10-28 23:13:26,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418638234] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:26,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:26,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 23:13:26,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639742238] [2021-10-28 23:13:26,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:13:26,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:26,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:13:26,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:13:26,600 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) [2021-10-28 23:13:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:27,017 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-10-28 23:13:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:13:27,020 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 [2021-10-28 23:13:27,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:27,021 INFO L225 Difference]: With dead ends: 129 [2021-10-28 23:13:27,021 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 23:13:27,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:13:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 23:13:27,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2021-10-28 23:13:27,030 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) [2021-10-28 23:13:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-10-28 23:13:27,031 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 11 [2021-10-28 23:13:27,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:27,032 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-10-28 23:13:27,032 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) [2021-10-28 23:13:27,032 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-10-28 23:13:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:13:27,033 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:27,033 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:27,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:13:27,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:27,253 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash -417821772, now seen corresponding path program 1 times [2021-10-28 23:13:27,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:27,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943675073] [2021-10-28 23:13:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:27,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:27,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:27,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:27,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:13:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:27,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:13:27,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:13:27,446 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 [2021-10-28 23:13:27,453 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 [2021-10-28 23:13:27,567 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:13:27,568 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 [2021-10-28 23:13:27,580 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:13:27,581 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 [2021-10-28 23:13:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:27,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:13:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:30,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:30,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943675073] [2021-10-28 23:13:30,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943675073] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:30,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:30,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 23:13:30,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15604291] [2021-10-28 23:13:30,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:13:30,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:30,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:13:30,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-28 23:13:30,451 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) [2021-10-28 23:13:42,346 WARN L207 SmtUtils]: Spent 6.32 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-28 23:13:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:49,856 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2021-10-28 23:13:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:13:49,857 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 [2021-10-28 23:13:49,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:49,859 INFO L225 Difference]: With dead ends: 161 [2021-10-28 23:13:49,859 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 23:13:49,860 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=68, Invalid=112, Unknown=2, NotChecked=0, Total=182 [2021-10-28 23:13:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 23:13:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 111. [2021-10-28 23:13:49,871 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) [2021-10-28 23:13:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-10-28 23:13:49,873 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 11 [2021-10-28 23:13:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:49,874 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-10-28 23:13:49,874 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) [2021-10-28 23:13:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-10-28 23:13:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:13:49,875 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:49,875 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:49,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-28 23:13:50,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:50,079 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:50,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:50,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2094783426, now seen corresponding path program 1 times [2021-10-28 23:13:50,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:50,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76034457] [2021-10-28 23:13:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:50,081 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:50,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:50,082 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:50,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:13:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:50,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:13:50,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:13:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:50,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:13:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:50,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:50,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76034457] [2021-10-28 23:13:50,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76034457] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:50,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:50,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:13:50,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80175371] [2021-10-28 23:13:50,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:13:50,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:13:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:13:50,373 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) [2021-10-28 23:13:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:50,833 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2021-10-28 23:13:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:13:50,834 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 [2021-10-28 23:13:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:50,835 INFO L225 Difference]: With dead ends: 132 [2021-10-28 23:13:50,835 INFO L226 Difference]: Without dead ends: 132 [2021-10-28 23:13:50,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:13:50,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-28 23:13:50,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2021-10-28 23:13:50,842 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) [2021-10-28 23:13:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2021-10-28 23:13:50,844 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 13 [2021-10-28 23:13:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:50,844 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2021-10-28 23:13:50,844 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) [2021-10-28 23:13:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2021-10-28 23:13:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:13:50,845 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:50,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:50,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:13:51,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:51,046 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:51,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1270832053, now seen corresponding path program 1 times [2021-10-28 23:13:51,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:51,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90782492] [2021-10-28 23:13:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:51,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:51,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:51,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:51,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:13:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:51,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:13:51,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:13:51,255 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 [2021-10-28 23:13:51,279 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 [2021-10-28 23:13:51,325 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 [2021-10-28 23:13:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:51,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:13:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:51,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:51,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90782492] [2021-10-28 23:13:51,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90782492] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:51,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:51,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:13:51,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681598147] [2021-10-28 23:13:51,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:13:51,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:51,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:13:51,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:13:51,474 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) [2021-10-28 23:13:52,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:52,375 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-10-28 23:13:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:13:52,376 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 [2021-10-28 23:13:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:52,377 INFO L225 Difference]: With dead ends: 112 [2021-10-28 23:13:52,377 INFO L226 Difference]: Without dead ends: 112 [2021-10-28 23:13:52,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:13:52,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-28 23:13:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2021-10-28 23:13:52,383 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) [2021-10-28 23:13:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-10-28 23:13:52,385 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 15 [2021-10-28 23:13:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:52,385 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-10-28 23:13:52,386 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) [2021-10-28 23:13:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-10-28 23:13:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:13:52,387 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:52,387 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:52,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:13:52,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:52,601 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:52,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1270832054, now seen corresponding path program 1 times [2021-10-28 23:13:52,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:52,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659746771] [2021-10-28 23:13:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:52,602 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:52,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:52,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:52,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:13:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:52,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:13:52,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:13:52,793 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 [2021-10-28 23:13:52,843 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 [2021-10-28 23:13:52,855 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 [2021-10-28 23:13:52,926 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 [2021-10-28 23:13:52,932 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 [2021-10-28 23:13:53,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:53,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:13:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:53,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:53,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659746771] [2021-10-28 23:13:53,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659746771] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:53,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:53,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 23:13:53,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981983747] [2021-10-28 23:13:53,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:13:53,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:13:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:13:53,494 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) [2021-10-28 23:13:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:55,766 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2021-10-28 23:13:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:13:55,767 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 [2021-10-28 23:13:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:55,768 INFO L225 Difference]: With dead ends: 127 [2021-10-28 23:13:55,769 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 23:13:55,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:13:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 23:13:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 105. [2021-10-28 23:13:55,775 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) [2021-10-28 23:13:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2021-10-28 23:13:55,776 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 15 [2021-10-28 23:13:55,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:55,777 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2021-10-28 23:13:55,777 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) [2021-10-28 23:13:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2021-10-28 23:13:55,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:13:55,778 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:55,778 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:55,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-28 23:13:55,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:55,991 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:55,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:55,992 INFO L85 PathProgramCache]: Analyzing trace with hash 185778926, now seen corresponding path program 1 times [2021-10-28 23:13:55,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:55,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985650155] [2021-10-28 23:13:55,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:55,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:55,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:55,994 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:55,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:13:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:56,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:13:56,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:13:56,171 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 [2021-10-28 23:13:56,269 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 [2021-10-28 23:13:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:56,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:13:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:56,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:56,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985650155] [2021-10-28 23:13:56,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985650155] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:56,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:56,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:13:56,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784360730] [2021-10-28 23:13:56,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:13:56,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:56,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:13:56,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:13:56,375 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) [2021-10-28 23:13:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:56,925 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-10-28 23:13:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:13:56,925 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 [2021-10-28 23:13:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:56,927 INFO L225 Difference]: With dead ends: 166 [2021-10-28 23:13:56,927 INFO L226 Difference]: Without dead ends: 166 [2021-10-28 23:13:56,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:13:56,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-28 23:13:56,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 111. [2021-10-28 23:13:56,932 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) [2021-10-28 23:13:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-10-28 23:13:56,934 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 16 [2021-10-28 23:13:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:56,934 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-10-28 23:13:56,934 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) [2021-10-28 23:13:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-10-28 23:13:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:13:56,936 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:56,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:56,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-28 23:13:57,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:57,148 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 23:13:57,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:57,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1669963529, now seen corresponding path program 1 times [2021-10-28 23:13:57,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:57,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526055973] [2021-10-28 23:13:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:57,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:57,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:57,152 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:57,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 23:13:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:13:57,300 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:13:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:13:57,386 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:13:57,399 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:13:57,400 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:57,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:13:57,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:13:57,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:13:57,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:13:57,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:13:57,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:13:57,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:13:57,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:13:57,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:13:57,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:13:57,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:13:57,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:13:57,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:13:57,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:13:57,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:13:57,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:13:57,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:13:57,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:13:57,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:13:57,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:13:57,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:13:57,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:13:57,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:57,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:13:57,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 23:13:57,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:57,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 23:13:57,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 23:13:57,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 23:13:57,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 23:13:57,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 23:13:57,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 23:13:57,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 23:13:57,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 23:13:57,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 23:13:57,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 23:13:57,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 23:13:57,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 23:13:57,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 23:13:57,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-28 23:13:57,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:57,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:57,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:57,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-28 23:13:57,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-28 23:13:57,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:57,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:57,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:57,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 23:13:57,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 23:13:57,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:57,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:57,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:57,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:57,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:13:57,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:57,631 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:57,634 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:13:57,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:13:57 BoogieIcfgContainer [2021-10-28 23:13:57,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:13:57,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:13:57,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:13:57,659 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:13:57,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:13:23" (3/4) ... [2021-10-28 23:13:57,663 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:13:57,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:13:57,664 INFO L168 Benchmark]: Toolchain (without parser) took 35465.45 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 42.2 MB in the beginning and 41.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:57,664 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 62.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:13:57,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.75 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 39.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:57,665 INFO L168 Benchmark]: Boogie Preprocessor took 139.65 ms. Allocated memory is still 62.9 MB. Free memory was 39.3 MB in the beginning and 36.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:57,666 INFO L168 Benchmark]: RCFGBuilder took 1030.52 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 36.2 MB in the beginning and 42.1 MB in the end (delta: -6.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:57,666 INFO L168 Benchmark]: TraceAbstraction took 33674.12 ms. Allocated memory is still 79.7 MB. Free memory was 41.8 MB in the beginning and 41.0 MB in the end (delta: 782.2 kB). Peak memory consumption was 793.8 kB. Max. memory is 16.1 GB. [2021-10-28 23:13:57,667 INFO L168 Benchmark]: Witness Printer took 4.45 ms. Allocated memory is still 79.7 MB. Free memory is still 41.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:13:57,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 62.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 610.75 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 39.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 139.65 ms. Allocated memory is still 62.9 MB. Free memory was 39.3 MB in the beginning and 36.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1030.52 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 36.2 MB in the beginning and 42.1 MB in the end (delta: -6.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 33674.12 ms. Allocated memory is still 79.7 MB. Free memory was 41.8 MB in the beginning and 41.0 MB in the end (delta: 782.2 kB). Peak memory consumption was 793.8 kB. Max. memory is 16.1 GB. * Witness Printer took 4.45 ms. Allocated memory is still 79.7 MB. Free memory is still 41.0 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: 33.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 24.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 535 SDtfs, 957 SDslu, 902 SDs, 0 SdLazy, 1482 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 20.8s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 186 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s 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 [2021-10-28 23:13:57,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6411e69f-fce2-4f0d-bcb4-9c687b5dff99/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...