./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cac090f4bce8d8ee66db31cac76f8c06713c6de9 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cac090f4bce8d8ee66db31cac76f8c06713c6de9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:45:49,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:45:49,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:45:49,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:45:49,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:45:49,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:45:49,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:45:49,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:45:49,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:45:49,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:45:49,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:45:49,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:45:49,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:45:49,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:45:49,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:45:49,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:45:49,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:45:49,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:45:49,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:45:49,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:45:49,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:45:49,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:45:49,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:45:49,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:45:49,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:45:49,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:45:49,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:45:49,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:45:49,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:45:49,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:45:49,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:45:49,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:45:49,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:45:49,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:45:49,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:45:49,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:45:49,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:45:49,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:45:49,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:45:49,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:45:49,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:45:49,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:45:50,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:45:50,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:45:50,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:45:50,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:45:50,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:45:50,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:45:50,033 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:45:50,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:45:50,034 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:45:50,034 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:45:50,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:45:50,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:45:50,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:45:50,035 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:45:50,036 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:45:50,036 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:45:50,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:45:50,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:45:50,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:45:50,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:45:50,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:45:50,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:45:50,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:45:50,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:45:50,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:45:50,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:45:50,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:45:50,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:45:50,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:45:50,040 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_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2021-10-13 00:45:50,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:45:50,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:45:50,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:45:50,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:45:50,413 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:45:50,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/list-properties/splice-2.i [2021-10-13 00:45:50,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data/016e7cef0/c889d820347b431ea84bee9e21103077/FLAG4d8649885 [2021-10-13 00:45:51,223 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:45:51,223 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/sv-benchmarks/c/list-properties/splice-2.i [2021-10-13 00:45:51,240 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data/016e7cef0/c889d820347b431ea84bee9e21103077/FLAG4d8649885 [2021-10-13 00:45:51,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data/016e7cef0/c889d820347b431ea84bee9e21103077 [2021-10-13 00:45:51,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:45:51,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:45:51,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:45:51,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:45:51,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:45:51,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:45:51" (1/1) ... [2021-10-13 00:45:51,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f967907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:51, skipping insertion in model container [2021-10-13 00:45:51,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:45:51" (1/1) ... [2021-10-13 00:45:51,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:45:51,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:45:51,978 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_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-10-13 00:45:51,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:45:51,998 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:45:52,072 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_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-10-13 00:45:52,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:45:52,124 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:45:52,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52 WrapperNode [2021-10-13 00:45:52,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:45:52,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:45:52,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:45:52,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:45:52,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52" (1/1) ... [2021-10-13 00:45:52,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52" (1/1) ... [2021-10-13 00:45:52,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52" (1/1) ... [2021-10-13 00:45:52,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52" (1/1) ... [2021-10-13 00:45:52,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52" (1/1) ... [2021-10-13 00:45:52,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52" (1/1) ... [2021-10-13 00:45:52,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52" (1/1) ... [2021-10-13 00:45:52,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:45:52,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:45:52,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:45:52,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:45:52,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52" (1/1) ... [2021-10-13 00:45:52,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:45:52,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:45:52,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:45:52,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:45:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:45:52,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:45:52,307 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:45:52,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:45:52,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:45:52,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:45:52,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:45:52,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:45:52,309 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-13 00:45:52,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:45:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:45:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:45:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:45:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:45:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:45:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:45:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:45:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:45:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:45:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:45:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:45:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:45:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:45:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:45:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:45:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:45:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:45:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:45:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:45:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:45:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:45:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:45:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:45:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:45:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:45:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:45:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:45:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:45:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:45:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:45:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:45:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:45:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:45:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:45:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:45:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:45:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:45:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:45:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:45:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:45:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:45:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:45:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:45:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:45:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:45:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:45:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:45:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:45:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:45:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:45:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:45:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:45:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:45:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:45:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:45:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:45:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:45:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:45:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:45:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:45:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:45:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:45:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:45:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:45:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:45:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:45:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:45:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:45:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:45:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:45:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:45:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:45:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:45:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:45:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:45:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:45:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:45:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:45:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:45:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:45:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:45:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:45:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:45:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:45:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:45:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:45:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:45:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:45:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:45:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:45:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:45:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:45:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:45:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:45:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:45:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:45:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:45:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:45:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:45:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:45:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:45:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:45:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:45:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:45:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:45:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:45:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:45:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:45:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:45:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:45:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:45:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:45:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:45:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-13 00:45:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:45:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:45:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:45:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:45:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:45:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:45:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:45:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:45:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:45:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:45:52,706 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-13 00:45:53,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:45:53,025 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 00:45:53,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:45:53 BoogieIcfgContainer [2021-10-13 00:45:53,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:45:53,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:45:53,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:45:53,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:45:53,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:45:51" (1/3) ... [2021-10-13 00:45:53,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfcf453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:45:53, skipping insertion in model container [2021-10-13 00:45:53,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:52" (2/3) ... [2021-10-13 00:45:53,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfcf453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:45:53, skipping insertion in model container [2021-10-13 00:45:53,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:45:53" (3/3) ... [2021-10-13 00:45:53,047 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-10-13 00:45:53,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:45:53,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-13 00:45:53,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:45:53,124 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:45:53,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-10-13 00:45:53,145 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) [2021-10-13 00:45:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:45:53,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:45:53,156 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:45:53,156 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 00:45:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:45:53,163 INFO L82 PathProgramCache]: Analyzing trace with hash 428760740, now seen corresponding path program 1 times [2021-10-13 00:45:53,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:45:53,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742137573] [2021-10-13 00:45:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:45:53,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:45:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:45:53,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:45:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:45:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:45:53,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:45:53,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742137573] [2021-10-13 00:45:53,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742137573] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:45:53,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:45:53,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:45:53,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517240103] [2021-10-13 00:45:53,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:45:53,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:45:53,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:45:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:45:53,523 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) [2021-10-13 00:45:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:45:53,818 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-10-13 00:45:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:45:53,821 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 [2021-10-13 00:45:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:45:53,832 INFO L225 Difference]: With dead ends: 84 [2021-10-13 00:45:53,833 INFO L226 Difference]: Without dead ends: 77 [2021-10-13 00:45:53,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:45:53,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-13 00:45:53,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-10-13 00:45:53,897 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) [2021-10-13 00:45:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-10-13 00:45:53,907 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2021-10-13 00:45:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:45:53,908 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-10-13 00:45:53,908 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) [2021-10-13 00:45:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-10-13 00:45:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:45:53,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:45:53,911 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:45:53,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:45:53,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 00:45:53,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:45:53,913 INFO L82 PathProgramCache]: Analyzing trace with hash 406645412, now seen corresponding path program 1 times [2021-10-13 00:45:53,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:45:53,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819764476] [2021-10-13 00:45:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:45:53,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:45:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:45:54,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:45:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:45:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:45:54,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:45:54,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819764476] [2021-10-13 00:45:54,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819764476] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:45:54,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:45:54,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:45:54,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031218843] [2021-10-13 00:45:54,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:45:54,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:45:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:45:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:45:54,097 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) [2021-10-13 00:45:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:45:54,386 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-10-13 00:45:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:45:54,387 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 [2021-10-13 00:45:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:45:54,394 INFO L225 Difference]: With dead ends: 84 [2021-10-13 00:45:54,394 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 00:45:54,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:45:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 00:45:54,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2021-10-13 00:45:54,416 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) [2021-10-13 00:45:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2021-10-13 00:45:54,427 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 11 [2021-10-13 00:45:54,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:45:54,428 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2021-10-13 00:45:54,428 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) [2021-10-13 00:45:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2021-10-13 00:45:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:45:54,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:45:54,430 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:45:54,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:45:54,431 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 00:45:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:45:54,433 INFO L82 PathProgramCache]: Analyzing trace with hash 406645413, now seen corresponding path program 1 times [2021-10-13 00:45:54,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:45:54,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588343129] [2021-10-13 00:45:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:45:54,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:45:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:45:54,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:45:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:45:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:45:54,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:45:54,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588343129] [2021-10-13 00:45:54,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588343129] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:45:54,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:45:54,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:45:54,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49498847] [2021-10-13 00:45:54,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:45:54,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:45:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:45:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:45:54,591 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) [2021-10-13 00:45:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:45:54,865 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-10-13 00:45:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:45:54,865 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 [2021-10-13 00:45:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:45:54,874 INFO L225 Difference]: With dead ends: 92 [2021-10-13 00:45:54,874 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 00:45:54,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:45:54,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 00:45:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2021-10-13 00:45:54,894 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) [2021-10-13 00:45:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-10-13 00:45:54,896 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 11 [2021-10-13 00:45:54,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:45:54,897 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-10-13 00:45:54,897 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) [2021-10-13 00:45:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-10-13 00:45:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:45:54,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:45:54,898 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:45:54,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:45:54,899 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 00:45:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:45:54,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1729229184, now seen corresponding path program 1 times [2021-10-13 00:45:54,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:45:54,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516785420] [2021-10-13 00:45:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:45:54,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:45:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:45:54,963 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:45:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:45:55,053 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:45:55,053 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:45:55,054 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:45:55,057 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:45:55,057 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:45:55,059 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:45:55,065 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:45:55,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:45:55,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:45:55,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-13 00:45:55,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-13 00:45:55,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-13 00:45:55,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-13 00:45:55,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-13 00:45:55,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-13 00:45:55,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-13 00:45:55,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-13 00:45:55,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-13 00:45:55,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-13 00:45:55,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-13 00:45:55,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-13 00:45:55,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-13 00:45:55,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-13 00:45:55,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-13 00:45:55,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-13 00:45:55,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-13 00:45:55,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-13 00:45:55,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-13 00:45:55,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-13 00:45:55,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-13 00:45:55,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-13 00:45:55,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 00:45:55,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:45:55,085 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:45:55,108 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 00:45:55,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:45:55 BoogieIcfgContainer [2021-10-13 00:45:55,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:45:55,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:45:55,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:45:55,132 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:45:55,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:45:53" (3/4) ... [2021-10-13 00:45:55,137 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:45:55,137 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:45:55,140 INFO L168 Benchmark]: Toolchain (without parser) took 3663.13 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 71.9 MB in the beginning and 70.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:45:55,141 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 115.3 MB. Free memory is still 89.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:45:55,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.34 ms. Allocated memory is still 115.3 MB. Free memory was 71.7 MB in the beginning and 83.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:45:55,148 INFO L168 Benchmark]: Boogie Preprocessor took 78.61 ms. Allocated memory is still 115.3 MB. Free memory was 83.2 MB in the beginning and 80.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:45:55,153 INFO L168 Benchmark]: RCFGBuilder took 822.09 ms. Allocated memory is still 115.3 MB. Free memory was 80.5 MB in the beginning and 57.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:45:55,154 INFO L168 Benchmark]: TraceAbstraction took 2100.01 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 57.0 MB in the beginning and 71.3 MB in the end (delta: -14.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:45:55,154 INFO L168 Benchmark]: Witness Printer took 5.60 ms. Allocated memory is still 151.0 MB. Free memory is still 70.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:45:55,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 115.3 MB. Free memory is still 89.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 648.34 ms. Allocated memory is still 115.3 MB. Free memory was 71.7 MB in the beginning and 83.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.61 ms. Allocated memory is still 115.3 MB. Free memory was 83.2 MB in the beginning and 80.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 822.09 ms. Allocated memory is still 115.3 MB. Free memory was 80.5 MB in the beginning and 57.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2100.01 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 57.0 MB in the beginning and 71.3 MB in the end (delta: -14.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.60 ms. Allocated memory is still 151.0 MB. Free memory is still 70.4 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: 1970.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 19.5ms, AutomataDifference: 962.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 172 SDtfs, 230 SDslu, 59 SDs, 0 SdLazy, 386 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 564.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.7ms 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: 102.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.7ms SsaConstructionTime, 145.2ms SatisfiabilityAnalysisTime, 348.9ms 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 [2021-10-13 00:45:55,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:45:58,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:45:58,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:45:58,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:45:58,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:45:58,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:45:58,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:45:58,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:45:58,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:45:58,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:45:58,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:45:58,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:45:58,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:45:58,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:45:58,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:45:58,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:45:58,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:45:58,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:45:58,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:45:58,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:45:58,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:45:58,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:45:58,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:45:58,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:45:58,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:45:58,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:45:58,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:45:58,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:45:58,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:45:58,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:45:58,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:45:58,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:45:58,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:45:58,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:45:58,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:45:58,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:45:58,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:45:58,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:45:58,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:45:58,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:45:58,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:45:58,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:45:58,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:45:58,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:45:58,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:45:58,549 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:45:58,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:45:58,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:45:58,552 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:45:58,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:45:58,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:45:58,554 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:45:58,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:45:58,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:45:58,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:45:58,556 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:45:58,557 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:45:58,557 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:45:58,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:45:58,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:45:58,558 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:45:58,558 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:45:58,558 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:45:58,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:45:58,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:45:58,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:45:58,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:45:58,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:45:58,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:45:58,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:45:58,561 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:45:58,561 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:45:58,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:45:58,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:45:58,562 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_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2021-10-13 00:45:59,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:45:59,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:45:59,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:45:59,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:45:59,097 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:45:59,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/list-properties/splice-2.i [2021-10-13 00:45:59,198 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data/2b0e51dac/134eef054e684b0db36383f25f86752a/FLAGcf96f2fc0 [2021-10-13 00:45:59,921 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:45:59,922 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/sv-benchmarks/c/list-properties/splice-2.i [2021-10-13 00:45:59,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data/2b0e51dac/134eef054e684b0db36383f25f86752a/FLAGcf96f2fc0 [2021-10-13 00:46:00,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/data/2b0e51dac/134eef054e684b0db36383f25f86752a [2021-10-13 00:46:00,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:46:00,201 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:46:00,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:46:00,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:46:00,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:46:00,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:00,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca1909d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00, skipping insertion in model container [2021-10-13 00:46:00,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:00,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:46:00,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:46:00,772 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_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-10-13 00:46:00,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:46:00,809 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:46:00,895 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_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-10-13 00:46:00,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:46:00,958 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:46:00,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00 WrapperNode [2021-10-13 00:46:00,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:46:00,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:46:00,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:46:00,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:46:00,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:00,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:01,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:01,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:01,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:01,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:01,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:01,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:46:01,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:46:01,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:46:01,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:46:01,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00" (1/1) ... [2021-10-13 00:46:01,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:46:01,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:01,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:46:01,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:46:01,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:46:01,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:46:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:46:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:46:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:46:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:46:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:46:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:46:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:46:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-13 00:46:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:46:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:46:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:46:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:46:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:46:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:46:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:46:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:46:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:46:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:46:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:46:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:46:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:46:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:46:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:46:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:46:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:46:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:46:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:46:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:46:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:46:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:46:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:46:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:46:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:46:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:46:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:46:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:46:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:46:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:46:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:46:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:46:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:46:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:46:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:46:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:46:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:46:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:46:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:46:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:46:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:46:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:46:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:46:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:46:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:46:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:46:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:46:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:46:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:46:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:46:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:46:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:46:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:46:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:46:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:46:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:46:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:46:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:46:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:46:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:46:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:46:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:46:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:46:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:46:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:46:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:46:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:46:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:46:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:46:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:46:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:46:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:46:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:46:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:46:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:46:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:46:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:46:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:46:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:46:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:46:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:46:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:46:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:46:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:46:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:46:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:46:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:46:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:46:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:46:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:46:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:46:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:46:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:46:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:46:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:46:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:46:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:46:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:46:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:46:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:46:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:46:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:46:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:46:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:46:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:46:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:46:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:46:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:46:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:46:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:46:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:46:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:46:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:46:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:46:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-13 00:46:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:46:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:46:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 00:46:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:46:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:46:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 00:46:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:46:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:46:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:46:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:46:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 00:46:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 00:46:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:46:01,733 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-13 00:46:02,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:46:02,202 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 00:46:02,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:46:02 BoogieIcfgContainer [2021-10-13 00:46:02,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:46:02,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:46:02,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:46:02,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:46:02,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:46:00" (1/3) ... [2021-10-13 00:46:02,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb71df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:46:02, skipping insertion in model container [2021-10-13 00:46:02,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:00" (2/3) ... [2021-10-13 00:46:02,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb71df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:46:02, skipping insertion in model container [2021-10-13 00:46:02,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:46:02" (3/3) ... [2021-10-13 00:46:02,216 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-10-13 00:46:02,223 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:46:02,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-13 00:46:02,283 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:46:02,291 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:46:02,292 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-10-13 00:46:02,313 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) [2021-10-13 00:46:02,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:46:02,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:02,323 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:02,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 00:46:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:02,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1254687558, now seen corresponding path program 1 times [2021-10-13 00:46:02,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:46:02,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296283839] [2021-10-13 00:46:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:02,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:46:02,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:46:02,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:46:02,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:46:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:02,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:46:02,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:02,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:46:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:02,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:46:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:02,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:46:02,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296283839] [2021-10-13 00:46:02,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296283839] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:02,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:02,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:46:02,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822053343] [2021-10-13 00:46:02,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:46:02,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:46:02,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:46:02,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:46:02,831 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) [2021-10-13 00:46:03,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:03,231 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2021-10-13 00:46:03,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:46:03,234 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 [2021-10-13 00:46:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:03,244 INFO L225 Difference]: With dead ends: 90 [2021-10-13 00:46:03,244 INFO L226 Difference]: Without dead ends: 82 [2021-10-13 00:46:03,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:46:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-13 00:46:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2021-10-13 00:46:03,301 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) [2021-10-13 00:46:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2021-10-13 00:46:03,305 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 10 [2021-10-13 00:46:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:03,306 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2021-10-13 00:46:03,306 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) [2021-10-13 00:46:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2021-10-13 00:46:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:46:03,308 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:03,308 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:03,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:03,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:46:03,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 00:46:03,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:03,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1254687559, now seen corresponding path program 1 times [2021-10-13 00:46:03,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:46:03,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706711261] [2021-10-13 00:46:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:03,526 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:46:03,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:46:03,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:46:03,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:46:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:03,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:46:03,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:03,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:46:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:03,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:46:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:04,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:46:04,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706711261] [2021-10-13 00:46:04,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706711261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:04,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:04,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 00:46:04,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909025204] [2021-10-13 00:46:04,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:46:04,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:46:04,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:46:04,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:46:04,023 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) [2021-10-13 00:46:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:04,626 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-10-13 00:46:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:46:04,628 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 [2021-10-13 00:46:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:04,630 INFO L225 Difference]: With dead ends: 92 [2021-10-13 00:46:04,630 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 00:46:04,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 165.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:46:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 00:46:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2021-10-13 00:46:04,639 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) [2021-10-13 00:46:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2021-10-13 00:46:04,642 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 10 [2021-10-13 00:46:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:04,642 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2021-10-13 00:46:04,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:46:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2021-10-13 00:46:04,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:46:04,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:04,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:04,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:04,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:46:04,858 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 00:46:04,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:04,859 INFO L82 PathProgramCache]: Analyzing trace with hash -703271917, now seen corresponding path program 1 times [2021-10-13 00:46:04,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:46:04,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834512380] [2021-10-13 00:46:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:04,861 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:46:04,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:46:04,866 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:46:04,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:46:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:46:05,081 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:46:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:46:05,164 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:46:05,164 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:46:05,166 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:46:05,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:46:05,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:46:05,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:46:05,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:46:05,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:46:05,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:46:05,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-13 00:46:05,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-13 00:46:05,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-13 00:46:05,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-13 00:46:05,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-13 00:46:05,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-13 00:46:05,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-13 00:46:05,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-13 00:46:05,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-13 00:46:05,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-13 00:46:05,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-13 00:46:05,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-13 00:46:05,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-13 00:46:05,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-13 00:46:05,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-13 00:46:05,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-13 00:46:05,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-13 00:46:05,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-13 00:46:05,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-13 00:46:05,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-13 00:46:05,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-13 00:46:05,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-13 00:46:05,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 00:46:05,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:05,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:46:05,394 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:46:05,404 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 00:46:05,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:46:05 BoogieIcfgContainer [2021-10-13 00:46:05,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:46:05,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:46:05,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:46:05,430 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:46:05,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:46:02" (3/4) ... [2021-10-13 00:46:05,434 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:46:05,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:46:05,437 INFO L168 Benchmark]: Toolchain (without parser) took 5234.14 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.4 MB in the beginning and 36.5 MB in the end (delta: -3.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:05,440 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:46:05,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.37 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 31.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:05,448 INFO L168 Benchmark]: Boogie Preprocessor took 146.68 ms. Allocated memory is still 56.6 MB. Free memory was 31.0 MB in the beginning and 28.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:05,449 INFO L168 Benchmark]: RCFGBuilder took 1096.95 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 28.0 MB in the beginning and 47.0 MB in the end (delta: -19.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:05,451 INFO L168 Benchmark]: TraceAbstraction took 3220.95 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 36.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:05,451 INFO L168 Benchmark]: Witness Printer took 5.57 ms. Allocated memory is still 75.5 MB. Free memory is still 36.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:46:05,462 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 756.37 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 31.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 146.68 ms. Allocated memory is still 56.6 MB. Free memory was 31.0 MB in the beginning and 28.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1096.95 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 28.0 MB in the beginning and 47.0 MB in the end (delta: -19.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3220.95 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 36.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.57 ms. Allocated memory is still 75.5 MB. Free memory is still 36.5 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: 3110.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 16.7ms, AutomataDifference: 1045.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 90 SDtfs, 265 SDslu, 60 SDs, 0 SdLazy, 161 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 733.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 192.6ms 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: 51.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 68.6ms SsaConstructionTime, 100.5ms SatisfiabilityAnalysisTime, 544.5ms 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 [2021-10-13 00:46:05,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0dbf5ad-5797-4ba9-8c98-bebbe1a78b15/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...