./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/splice-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be --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 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be --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 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:07:14,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:07:14,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:07:14,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:07:14,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:07:14,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:07:14,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:07:14,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:07:14,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:07:14,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:07:14,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:07:14,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:07:14,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:07:14,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:07:14,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:07:14,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:07:14,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:07:14,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:07:14,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:07:14,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:07:14,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:07:14,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:07:14,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:07:14,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:07:14,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:07:14,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:07:14,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:07:14,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:07:14,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:07:14,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:07:14,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:07:14,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:07:14,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:07:14,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:07:14,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:07:14,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:07:14,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:07:14,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:07:14,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:07:14,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:07:14,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:07:14,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:07:14,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:07:14,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:07:14,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:07:14,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:07:14,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:07:14,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:07:14,632 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:07:14,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:07:14,633 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:07:14,633 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:07:14,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:07:14,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:07:14,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:07:14,635 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:07:14,635 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:07:14,635 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:07:14,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:07:14,635 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:07:14,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:07:14,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:07:14,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:07:14,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:07:14,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:07:14,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:07:14,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:07:14,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:07:14,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:07:14,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:07:14,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:07:14,638 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_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc [2021-10-21 20:07:14,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:07:14,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:07:14,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:07:14,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:07:14,957 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:07:14,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-properties/splice-2.i [2021-10-21 20:07:15,060 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data/68fba5e49/0a8430e6cae24ba0b402c55d00c4cb3d/FLAG13f22ce80 [2021-10-21 20:07:15,707 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:07:15,708 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/sv-benchmarks/c/list-properties/splice-2.i [2021-10-21 20:07:15,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data/68fba5e49/0a8430e6cae24ba0b402c55d00c4cb3d/FLAG13f22ce80 [2021-10-21 20:07:15,969 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data/68fba5e49/0a8430e6cae24ba0b402c55d00c4cb3d [2021-10-21 20:07:15,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:07:15,973 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:07:15,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:07:15,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:07:15,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:07:15,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:07:15" (1/1) ... [2021-10-21 20:07:15,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca69f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:15, skipping insertion in model container [2021-10-21 20:07:15,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:07:15" (1/1) ... [2021-10-21 20:07:15,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:07:16,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:07:16,437 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_fcadd146-0488-4a56-9710-4675763fc73a/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-10-21 20:07:16,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:07:16,458 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:07:16,542 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_fcadd146-0488-4a56-9710-4675763fc73a/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-10-21 20:07:16,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:07:16,580 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:07:16,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16 WrapperNode [2021-10-21 20:07:16,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:07:16,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:07:16,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:07:16,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:07:16,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16" (1/1) ... [2021-10-21 20:07:16,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16" (1/1) ... [2021-10-21 20:07:16,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16" (1/1) ... [2021-10-21 20:07:16,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16" (1/1) ... [2021-10-21 20:07:16,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16" (1/1) ... [2021-10-21 20:07:16,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16" (1/1) ... [2021-10-21 20:07:16,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16" (1/1) ... [2021-10-21 20:07:16,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:07:16,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:07:16,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:07:16,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:07:16,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16" (1/1) ... [2021-10-21 20:07:16,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:07:16,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:07:16,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:07:16,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:07:16,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:07:16,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:07:16,763 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 20:07:16,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:07:16,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:07:16,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:07:16,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:07:16,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:07:16,765 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-21 20:07:16,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:07:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:07:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 20:07:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 20:07:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 20:07:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 20:07:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:07:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:07:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:07:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:07:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:07:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:07:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:07:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:07:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:07:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:07:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:07:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:07:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:07:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:07:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:07:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:07:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:07:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:07:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:07:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:07:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:07:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:07:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:07:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:07:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:07:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:07:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:07:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:07:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:07:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:07:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:07:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:07:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:07:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:07:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:07:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:07:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:07:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:07:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:07:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:07:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:07:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:07:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:07:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:07:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:07:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:07:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:07:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:07:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:07:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:07:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:07:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:07:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:07:16,778 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:07:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:07:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:07:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:07:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:07:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:07:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:07:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:07:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:07:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:07:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:07:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:07:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:07:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:07:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:07:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:07:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:07:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:07:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:07:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:07:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:07:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:07:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:07:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:07:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:07:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:07:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:07:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:07:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:07:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:07:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:07:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:07:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:07:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:07:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:07:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:07:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:07:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:07:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:07:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:07:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:07:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:07:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:07:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:07:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:07:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:07:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:07:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:07:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:07:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:07:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:07:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:07:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:07:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:07:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:07:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-21 20:07:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:07:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:07:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:07:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:07:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:07:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:07:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:07:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:07:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:07:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:07:17,216 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-21 20:07:17,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:07:17,595 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:07:17,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:07:17 BoogieIcfgContainer [2021-10-21 20:07:17,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:07:17,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:07:17,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:07:17,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:07:17,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:07:15" (1/3) ... [2021-10-21 20:07:17,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b91d51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:07:17, skipping insertion in model container [2021-10-21 20:07:17,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:16" (2/3) ... [2021-10-21 20:07:17,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b91d51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:07:17, skipping insertion in model container [2021-10-21 20:07:17,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:07:17" (3/3) ... [2021-10-21 20:07:17,619 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-10-21 20:07:17,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:07:17,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-21 20:07:17,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:07:17,695 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 [2021-10-21 20:07:17,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-10-21 20:07:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 78 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:07:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:07:17,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:07:17,726 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:07:17,727 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-21 20:07:17,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:07:17,733 INFO L82 PathProgramCache]: Analyzing trace with hash 428760740, now seen corresponding path program 1 times [2021-10-21 20:07:17,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:07:17,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32589454] [2021-10-21 20:07:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:07:17,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:07:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:07:17,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:07:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:07:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:07:18,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:07:18,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32589454] [2021-10-21 20:07:18,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32589454] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:07:18,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:07:18,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:07:18,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103846052] [2021-10-21 20:07:18,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:07:18,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:07:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:07:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:07:18,036 INFO L87 Difference]: Start difference. First operand has 84 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 78 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-21 20:07:18,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:07:18,260 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-10-21 20:07:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:07:18,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 10 [2021-10-21 20:07:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:07:18,269 INFO L225 Difference]: With dead ends: 84 [2021-10-21 20:07:18,270 INFO L226 Difference]: Without dead ends: 77 [2021-10-21 20:07:18,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:07:18,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-21 20:07:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-10-21 20:07:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 73 states have internal predecessors, (81), 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) [2021-10-21 20:07:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-10-21 20:07:18,321 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2021-10-21 20:07:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:07:18,321 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-10-21 20:07:18,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-21 20:07:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-10-21 20:07:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:07:18,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:07:18,322 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:07:18,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:07:18,323 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-21 20:07:18,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:07:18,324 INFO L82 PathProgramCache]: Analyzing trace with hash 406645412, now seen corresponding path program 1 times [2021-10-21 20:07:18,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:07:18,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742800063] [2021-10-21 20:07:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:07:18,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:07:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:07:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:07:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:07:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:07:18,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:07:18,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742800063] [2021-10-21 20:07:18,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742800063] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:07:18,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:07:18,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:07:18,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506156524] [2021-10-21 20:07:18,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:07:18,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:07:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:07:18,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:07:18,499 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:07:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:07:18,718 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-10-21 20:07:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:07:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-10-21 20:07:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:07:18,725 INFO L225 Difference]: With dead ends: 84 [2021-10-21 20:07:18,725 INFO L226 Difference]: Without dead ends: 84 [2021-10-21 20:07:18,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:07:18,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-21 20:07:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2021-10-21 20:07:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 74 states have internal predecessors, (88), 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) [2021-10-21 20:07:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2021-10-21 20:07:18,751 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 11 [2021-10-21 20:07:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:07:18,752 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2021-10-21 20:07:18,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:07:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2021-10-21 20:07:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:07:18,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:07:18,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:07:18,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:07:18,753 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-21 20:07:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:07:18,754 INFO L82 PathProgramCache]: Analyzing trace with hash 406645413, now seen corresponding path program 1 times [2021-10-21 20:07:18,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:07:18,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776765259] [2021-10-21 20:07:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:07:18,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:07:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:07:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:07:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:07:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:07:18,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:07:18,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776765259] [2021-10-21 20:07:18,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776765259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:07:18,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:07:18,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:07:18,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077889516] [2021-10-21 20:07:18,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:07:18,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:07:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:07:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:07:18,888 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:07:19,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:07:19,117 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-10-21 20:07:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:07:19,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-10-21 20:07:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:07:19,123 INFO L225 Difference]: With dead ends: 92 [2021-10-21 20:07:19,123 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 20:07:19,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:07:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 20:07:19,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2021-10-21 20:07:19,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.5593220338983051) internal successors, (92), 81 states have internal predecessors, (92), 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) [2021-10-21 20:07:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-10-21 20:07:19,140 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 11 [2021-10-21 20:07:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:07:19,141 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-10-21 20:07:19,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:07:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-10-21 20:07:19,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 20:07:19,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:07:19,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:07:19,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:07:19,142 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-21 20:07:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:07:19,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1729229184, now seen corresponding path program 1 times [2021-10-21 20:07:19,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:07:19,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908653785] [2021-10-21 20:07:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:07:19,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:07:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:07:19,161 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:07:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:07:19,228 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:07:19,228 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:07:19,229 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:07:19,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 20:07:19,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 20:07:19,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 20:07:19,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 20:07:19,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 20:07:19,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 20:07:19,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 20:07:19,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 20:07:19,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 20:07:19,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 20:07:19,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 20:07:19,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 20:07:19,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 20:07:19,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 20:07:19,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 20:07:19,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 20:07:19,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 20:07:19,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 20:07:19,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 20:07:19,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 20:07:19,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-21 20:07:19,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-21 20:07:19,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-21 20:07:19,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-21 20:07:19,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-21 20:07:19,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-21 20:07:19,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-21 20:07:19,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-21 20:07:19,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:07:19,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:07:19,248 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:07:19,263 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 20:07:19,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:07:19 BoogieIcfgContainer [2021-10-21 20:07:19,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:07:19,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:07:19,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:07:19,276 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:07:19,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:07:17" (3/4) ... [2021-10-21 20:07:19,280 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:07:19,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:07:19,282 INFO L168 Benchmark]: Toolchain (without parser) took 3307.13 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 66.0 MB in the beginning and 68.1 MB in the end (delta: -2.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:19,283 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 100.7 MB. Free memory is still 55.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:07:19,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.83 ms. Allocated memory is still 100.7 MB. Free memory was 65.6 MB in the beginning and 69.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:19,286 INFO L168 Benchmark]: Boogie Preprocessor took 81.05 ms. Allocated memory is still 100.7 MB. Free memory was 69.3 MB in the beginning and 66.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:19,289 INFO L168 Benchmark]: RCFGBuilder took 943.55 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 66.4 MB in the beginning and 101.7 MB in the end (delta: -35.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:19,290 INFO L168 Benchmark]: TraceAbstraction took 1665.47 ms. Allocated memory is still 130.0 MB. Free memory was 101.1 MB in the beginning and 68.1 MB in the end (delta: 33.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:19,290 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 130.0 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:07:19,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 100.7 MB. Free memory is still 55.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 605.83 ms. Allocated memory is still 100.7 MB. Free memory was 65.6 MB in the beginning and 69.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.05 ms. Allocated memory is still 100.7 MB. Free memory was 69.3 MB in the beginning and 66.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 943.55 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 66.4 MB in the beginning and 101.7 MB in the end (delta: -35.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1665.47 ms. Allocated memory is still 130.0 MB. Free memory was 101.1 MB in the beginning and 68.1 MB in the end (delta: 33.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.77 ms. Allocated memory is still 130.0 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, flag=1, p={-1:0}] [L555] EXPR a->h VAL [a={-1:0}, a->h=3, flag=1, p={-1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={-1:0}, flag=1, p={-1:0}] - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: 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 10 procedures, 103 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 1562.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 15.1ms, AutomataDifference: 727.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 172 SDtfs, 230 SDslu, 59 SDs, 0 SdLazy, 386 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 439.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=3, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 74.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.4ms SsaConstructionTime, 113.4ms SatisfiabilityAnalysisTime, 332.4ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 [2021-10-21 20:07:19,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:07:21,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:07:21,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:07:22,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:07:22,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:07:22,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:07:22,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:07:22,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:07:22,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:07:22,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:07:22,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:07:22,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:07:22,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:07:22,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:07:22,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:07:22,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:07:22,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:07:22,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:07:22,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:07:22,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:07:22,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:07:22,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:07:22,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:07:22,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:07:22,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:07:22,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:07:22,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:07:22,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:07:22,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:07:22,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:07:22,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:07:22,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:07:22,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:07:22,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:07:22,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:07:22,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:07:22,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:07:22,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:07:22,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:07:22,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:07:22,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:07:22,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 20:07:22,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:07:22,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:07:22,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:07:22,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:07:22,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:07:22,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:07:22,185 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:07:22,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:07:22,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:07:22,186 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:07:22,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:07:22,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:07:22,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:07:22,188 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:07:22,188 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:07:22,189 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:07:22,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:07:22,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:07:22,189 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:07:22,190 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:07:22,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:07:22,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:07:22,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:07:22,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:07:22,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:07:22,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:07:22,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:07:22,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:07:22,192 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:07:22,193 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:07:22,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:07:22,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:07:22,194 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_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc [2021-10-21 20:07:22,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:07:22,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:07:22,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:07:22,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:07:22,664 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:07:22,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-properties/splice-2.i [2021-10-21 20:07:22,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data/ff55a0a8f/0c023f609f934f869474f322a51ab06a/FLAG17bfc4345 [2021-10-21 20:07:23,457 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:07:23,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/sv-benchmarks/c/list-properties/splice-2.i [2021-10-21 20:07:23,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data/ff55a0a8f/0c023f609f934f869474f322a51ab06a/FLAG17bfc4345 [2021-10-21 20:07:23,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/data/ff55a0a8f/0c023f609f934f869474f322a51ab06a [2021-10-21 20:07:23,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:07:23,724 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:07:23,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:07:23,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:07:23,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:07:23,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:07:23" (1/1) ... [2021-10-21 20:07:23,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178ca9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:23, skipping insertion in model container [2021-10-21 20:07:23,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:07:23" (1/1) ... [2021-10-21 20:07:23,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:07:23,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:07:24,162 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_fcadd146-0488-4a56-9710-4675763fc73a/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-10-21 20:07:24,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:07:24,195 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:07:24,264 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-10-21 20:07:24,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:07:24,304 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:07:24,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24 WrapperNode [2021-10-21 20:07:24,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:07:24,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:07:24,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:07:24,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:07:24,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24" (1/1) ... [2021-10-21 20:07:24,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24" (1/1) ... [2021-10-21 20:07:24,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24" (1/1) ... [2021-10-21 20:07:24,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24" (1/1) ... [2021-10-21 20:07:24,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24" (1/1) ... [2021-10-21 20:07:24,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24" (1/1) ... [2021-10-21 20:07:24,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24" (1/1) ... [2021-10-21 20:07:24,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:07:24,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:07:24,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:07:24,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:07:24,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24" (1/1) ... [2021-10-21 20:07:24,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:07:24,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:07:24,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:07:24,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:07:24,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:07:24,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:07:24,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:07:24,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 20:07:24,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:07:24,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:07:24,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:07:24,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:07:24,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:07:24,479 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-21 20:07:24,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:07:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:07:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 20:07:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 20:07:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 20:07:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 20:07:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:07:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:07:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:07:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:07:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:07:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:07:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:07:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:07:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:07:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:07:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:07:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:07:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:07:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:07:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:07:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:07:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:07:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:07:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:07:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:07:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:07:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:07:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:07:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:07:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:07:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:07:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:07:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:07:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:07:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:07:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:07:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:07:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:07:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:07:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:07:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:07:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:07:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:07:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:07:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:07:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:07:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:07:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:07:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:07:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:07:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:07:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:07:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:07:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:07:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:07:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:07:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:07:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:07:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:07:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:07:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:07:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:07:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:07:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:07:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:07:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:07:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:07:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:07:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:07:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:07:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:07:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:07:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:07:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:07:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:07:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:07:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:07:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:07:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:07:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:07:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:07:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:07:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:07:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:07:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:07:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:07:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:07:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:07:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:07:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:07:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:07:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:07:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:07:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:07:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:07:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:07:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:07:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:07:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:07:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:07:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:07:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:07:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:07:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:07:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:07:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:07:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:07:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:07:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:07:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:07:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:07:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:07:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:07:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-21 20:07:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:07:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:07:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:07:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:07:24,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:07:24,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:07:24,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:07:24,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:07:24,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:07:24,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:07:24,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-21 20:07:24,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-21 20:07:24,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:07:24,831 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-21 20:07:25,256 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:07:25,256 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:07:25,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:07:25 BoogieIcfgContainer [2021-10-21 20:07:25,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:07:25,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:07:25,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:07:25,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:07:25,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:07:23" (1/3) ... [2021-10-21 20:07:25,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed07784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:07:25, skipping insertion in model container [2021-10-21 20:07:25,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:07:24" (2/3) ... [2021-10-21 20:07:25,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed07784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:07:25, skipping insertion in model container [2021-10-21 20:07:25,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:07:25" (3/3) ... [2021-10-21 20:07:25,267 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-10-21 20:07:25,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:07:25,273 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-21 20:07:25,322 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:07:25,329 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 [2021-10-21 20:07:25,329 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-10-21 20:07:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 77 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:07:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:07:25,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:07:25,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:07:25,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-21 20:07:25,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:07:25,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1254687558, now seen corresponding path program 1 times [2021-10-21 20:07:25,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:07:25,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490346209] [2021-10-21 20:07:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:07:25,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:07:25,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:07:25,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:07:25,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:07:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:07:25,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:07:25,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:07:25,693 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 [2021-10-21 20:07:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:07:25,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:07:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:07:25,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:07:25,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490346209] [2021-10-21 20:07:25,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490346209] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:07:25,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:07:25,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-21 20:07:25,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857679829] [2021-10-21 20:07:25,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:07:25,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:07:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:07:25,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:07:25,899 INFO L87 Difference]: Start difference. First operand has 83 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 77 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 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 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:07:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:07:26,269 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2021-10-21 20:07:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:07:26,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 10 [2021-10-21 20:07:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:07:26,281 INFO L225 Difference]: With dead ends: 90 [2021-10-21 20:07:26,281 INFO L226 Difference]: Without dead ends: 82 [2021-10-21 20:07:26,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:07:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-21 20:07:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2021-10-21 20:07:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 72 states have internal predecessors, (86), 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) [2021-10-21 20:07:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2021-10-21 20:07:26,344 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 10 [2021-10-21 20:07:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:07:26,345 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2021-10-21 20:07:26,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:07:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2021-10-21 20:07:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:07:26,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:07:26,347 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:07:26,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:07:26,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:07:26,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-21 20:07:26,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:07:26,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1254687559, now seen corresponding path program 1 times [2021-10-21 20:07:26,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:07:26,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030374667] [2021-10-21 20:07:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:07:26,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:07:26,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:07:26,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:07:26,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:07:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:07:26,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:07:26,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:07:26,764 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 [2021-10-21 20:07:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:07:26,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:07:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:07:27,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:07:27,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030374667] [2021-10-21 20:07:27,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030374667] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:07:27,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:07:27,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-21 20:07:27,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544209920] [2021-10-21 20:07:27,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:07:27,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:07:27,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:07:27,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:07:27,072 INFO L87 Difference]: Start difference. First operand 76 states and 89 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) [2021-10-21 20:07:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:07:27,583 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-10-21 20:07:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:07:27,586 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 10 [2021-10-21 20:07:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:07:27,588 INFO L225 Difference]: With dead ends: 92 [2021-10-21 20:07:27,588 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 20:07:27,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 138.6ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:07:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 20:07:27,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2021-10-21 20:07:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 79 states have internal predecessors, (90), 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) [2021-10-21 20:07:27,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2021-10-21 20:07:27,600 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 10 [2021-10-21 20:07:27,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:07:27,605 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2021-10-21 20:07:27,606 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) [2021-10-21 20:07:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2021-10-21 20:07:27,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:07:27,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:07:27,607 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:07:27,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:07:27,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:07:27,820 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-21 20:07:27,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:07:27,820 INFO L82 PathProgramCache]: Analyzing trace with hash -703271917, now seen corresponding path program 1 times [2021-10-21 20:07:27,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:07:27,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211787586] [2021-10-21 20:07:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:07:27,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:07:27,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:07:27,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:07:27,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:07:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:07:27,967 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:07:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:07:28,030 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 20:07:28,031 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:07:28,032 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:07:28,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 20:07:28,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 20:07:28,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 20:07:28,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 20:07:28,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 20:07:28,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 20:07:28,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 20:07:28,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 20:07:28,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 20:07:28,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 20:07:28,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 20:07:28,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 20:07:28,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 20:07:28,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 20:07:28,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 20:07:28,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 20:07:28,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 20:07:28,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 20:07:28,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 20:07:28,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 20:07:28,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-21 20:07:28,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-21 20:07:28,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-21 20:07:28,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-21 20:07:28,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-21 20:07:28,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-21 20:07:28,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-21 20:07:28,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-21 20:07:28,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:07:28,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:07:28,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:07:28,255 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:07:28,263 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 20:07:28,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:07:28 BoogieIcfgContainer [2021-10-21 20:07:28,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:07:28,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:07:28,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:07:28,281 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:07:28,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:07:25" (3/4) ... [2021-10-21 20:07:28,288 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:07:28,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:07:28,290 INFO L168 Benchmark]: Toolchain (without parser) took 4564.93 ms. Allocated memory was 48.2 MB in the beginning and 77.6 MB in the end (delta: 29.4 MB). Free memory was 33.2 MB in the beginning and 26.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:28,293 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 48.2 MB. Free memory was 29.2 MB in the beginning and 29.1 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:07:28,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.40 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 33.1 MB in the beginning and 36.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:28,300 INFO L168 Benchmark]: Boogie Preprocessor took 77.15 ms. Allocated memory is still 60.8 MB. Free memory was 36.8 MB in the beginning and 33.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:28,302 INFO L168 Benchmark]: RCFGBuilder took 874.75 ms. Allocated memory is still 60.8 MB. Free memory was 33.6 MB in the beginning and 35.7 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:28,303 INFO L168 Benchmark]: TraceAbstraction took 3019.45 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 35.1 MB in the beginning and 26.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:28,304 INFO L168 Benchmark]: Witness Printer took 7.37 ms. Allocated memory is still 77.6 MB. Free memory is still 26.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:07:28,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 48.2 MB. Free memory was 29.2 MB in the beginning and 29.1 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 580.40 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 33.1 MB in the beginning and 36.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.15 ms. Allocated memory is still 60.8 MB. Free memory was 36.8 MB in the beginning and 33.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 874.75 ms. Allocated memory is still 60.8 MB. Free memory was 33.6 MB in the beginning and 35.7 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3019.45 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 35.1 MB in the beginning and 26.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.37 ms. Allocated memory is still 77.6 MB. Free memory is still 26.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={1:0}, flag=1] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={1:0}, flag=1, p={1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={1:0}, flag=1, p={1:0}] [L555] EXPR a->h VAL [a={1:0}, a->h=3, flag=1, p={1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={1:0}, flag=1, p={1:0}] - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: 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 11 procedures, 108 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 2933.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 15.2ms, AutomataDifference: 929.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 90 SDtfs, 265 SDslu, 60 SDs, 0 SdLazy, 161 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 634.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 169.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 55.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.9ms SsaConstructionTime, 86.2ms SatisfiabilityAnalysisTime, 629.1ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 188 SizeOfPredicates, 3 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [2021-10-21 20:07:28,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcadd146-0488-4a56-9710-4675763fc73a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...