./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list_flag-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_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/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_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/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_5067b869-c15b-45a2-ad11-47b9d7818a87/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 e2748dac41bc6cdd06fa5d8793326edbc7d40c79 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/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_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/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_5067b869-c15b-45a2-ad11-47b9d7818a87/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 e2748dac41bc6cdd06fa5d8793326edbc7d40c79 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:56:56,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:56:56,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:56:56,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:56:56,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:56:56,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:56:56,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:56:56,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:56:56,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:56:56,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:56:56,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:56:56,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:56:56,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:56:56,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:56:56,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:56:56,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:56:56,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:56:56,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:56:56,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:56:56,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:56:56,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:56:56,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:56:56,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:56:56,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:56:56,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:56:56,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:56:56,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:56:56,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:56:56,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:56:56,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:56:56,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:56:56,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:56:56,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:56:56,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:56:56,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:56:56,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:56:56,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:56:56,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:56:56,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:56:56,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:56:56,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:56:56,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:56:56,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:56:56,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:56:56,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:56:56,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:56:56,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:56:56,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:56:56,994 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:56:56,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:56:56,995 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:56:56,995 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:56:56,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:56:56,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:56:56,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:56:56,996 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:56:56,996 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:56:56,996 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:56:56,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:56:56,997 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:56:56,997 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:56:56,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:56:56,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:56:56,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:56:56,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:56:56,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:56:56,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:56:56,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:56:56,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:56:56,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:56:56,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:56:56,999 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_5067b869-c15b-45a2-ad11-47b9d7818a87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2021-10-13 00:56:57,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:56:57,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:56:57,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:56:57,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:56:57,314 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:56:57,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-13 00:56:57,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data/951887a8a/1b629cab468c4585aedf1092f984bbab/FLAG099aa1e72 [2021-10-13 00:56:57,912 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:56:57,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-13 00:56:57,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data/951887a8a/1b629cab468c4585aedf1092f984bbab/FLAG099aa1e72 [2021-10-13 00:56:58,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data/951887a8a/1b629cab468c4585aedf1092f984bbab [2021-10-13 00:56:58,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:56:58,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:56:58,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:56:58,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:56:58,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:56:58,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ce694a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58, skipping insertion in model container [2021-10-13 00:56:58,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:56:58,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:56:58,594 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_5067b869-c15b-45a2-ad11-47b9d7818a87/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-13 00:56:58,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:56:58,606 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:56:58,676 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_5067b869-c15b-45a2-ad11-47b9d7818a87/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-13 00:56:58,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:56:58,707 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:56:58,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58 WrapperNode [2021-10-13 00:56:58,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:56:58,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:56:58,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:56:58,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:56:58,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:56:58,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:56:58,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:56:58,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:56:58,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58" (1/1) ... [2021-10-13 00:56:58,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:56:58,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:56:58,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:56:58,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:56:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:56:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:56:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:56:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:56:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:56:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:56:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-13 00:56:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:56:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:56:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:56:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:56:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:56:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:56:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:56:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:56:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:56:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:56:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:56:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:56:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:56:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:56:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:56:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:56:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:56:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:56:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:56:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:56:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:56:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:56:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:56:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:56:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:56:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:56:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:56:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:56:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:56:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:56:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:56:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:56:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:56:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:56:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:56:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:56:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:56:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:56:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:56:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:56:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:56:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:56:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:56:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:56:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:56:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:56:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:56:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:56:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:56:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:56:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:56:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:56:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:56:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:56:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:56:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:56:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:56:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:56:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:56:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:56:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:56:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:56:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:56:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:56:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:56:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:56:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:56:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:56:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:56:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:56:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:56:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:56:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:56:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:56:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:56:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:56:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:56:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:56:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:56:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:56:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:56:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:56:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:56:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:56:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:56:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:56:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:56:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:56:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:56:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:56:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:56:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:56:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:56:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:56:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:56:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:56:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:56:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:56:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:56:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:56:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:56:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:56:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:56:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:56:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:56:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:56:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:56:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:56:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:56:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:56:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:56:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:56:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:56:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:56:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-13 00:56:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:56:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:56:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:56:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:56:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:56:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:56:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:56:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:56:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:56:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:56:59,196 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-13 00:56:59,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:56:59,413 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-13 00:56:59,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:56:59 BoogieIcfgContainer [2021-10-13 00:56:59,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:56:59,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:56:59,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:56:59,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:56:59,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:56:58" (1/3) ... [2021-10-13 00:56:59,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a2bc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:56:59, skipping insertion in model container [2021-10-13 00:56:59,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:58" (2/3) ... [2021-10-13 00:56:59,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a2bc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:56:59, skipping insertion in model container [2021-10-13 00:56:59,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:56:59" (3/3) ... [2021-10-13 00:56:59,428 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-10-13 00:56:59,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:56:59,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-13 00:56:59,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:56:59,523 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 00:56:59,523 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-13 00:56:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 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 00:56:59,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:56:59,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:56:59,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:59,551 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:56:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1866589301, now seen corresponding path program 1 times [2021-10-13 00:56:59,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:59,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419290672] [2021-10-13 00:56:59,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:59,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:59,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:56:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:59,749 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 00:56:59,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:59,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419290672] [2021-10-13 00:56:59,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419290672] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:59,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:59,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:56:59,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189634298] [2021-10-13 00:56:59,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:56:59,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:59,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:56:59,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:56:59,780 INFO L87 Difference]: Start difference. First operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 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 00:56:59,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:56:59,954 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-13 00:56:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:56:59,955 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 00:56:59,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:56:59,964 INFO L225 Difference]: With dead ends: 62 [2021-10-13 00:56:59,964 INFO L226 Difference]: Without dead ends: 55 [2021-10-13 00:56:59,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:56:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-13 00:57:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-13 00:57:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 51 states have internal predecessors, (56), 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 00:57:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-13 00:57:00,008 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2021-10-13 00:57:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:57:00,009 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-13 00:57:00,009 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 00:57:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-13 00:57:00,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:57:00,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:57:00,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:00,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:57:00,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:57:00,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:00,014 INFO L82 PathProgramCache]: Analyzing trace with hash -2029727141, now seen corresponding path program 1 times [2021-10-13 00:57:00,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:00,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852020351] [2021-10-13 00:57:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:00,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:00,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:57:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:00,147 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 00:57:00,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:00,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852020351] [2021-10-13 00:57:00,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852020351] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:57:00,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:57:00,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:57:00,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060460026] [2021-10-13 00:57:00,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:57:00,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:00,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:57:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:57:00,152 INFO L87 Difference]: Start difference. First operand 55 states and 59 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 00:57:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:00,343 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-13 00:57:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:57:00,344 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 00:57:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:57:00,346 INFO L225 Difference]: With dead ends: 63 [2021-10-13 00:57:00,346 INFO L226 Difference]: Without dead ends: 63 [2021-10-13 00:57:00,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:57:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-13 00:57:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2021-10-13 00:57:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.736842105263158) internal successors, (66), 54 states have internal predecessors, (66), 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 00:57:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-13 00:57:00,356 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-10-13 00:57:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:57:00,356 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-13 00:57:00,357 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 00:57:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-13 00:57:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:57:00,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:57:00,357 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:00,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:57:00,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:57:00,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:00,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2029727140, now seen corresponding path program 1 times [2021-10-13 00:57:00,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:00,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558547390] [2021-10-13 00:57:00,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:00,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:00,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:57:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:00,456 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 00:57:00,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:00,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558547390] [2021-10-13 00:57:00,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558547390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:57:00,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:57:00,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:57:00,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603166922] [2021-10-13 00:57:00,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:57:00,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:57:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:57:00,460 INFO L87 Difference]: Start difference. First operand 58 states and 69 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 00:57:00,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:00,602 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-10-13 00:57:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:57:00,602 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 00:57:00,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:57:00,604 INFO L225 Difference]: With dead ends: 76 [2021-10-13 00:57:00,604 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 00:57:00,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:57:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 00:57:00,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-10-13 00:57:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 63 states have internal predecessors, (72), 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 00:57:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-10-13 00:57:00,612 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2021-10-13 00:57:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:57:00,612 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-10-13 00:57:00,612 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 00:57:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-10-13 00:57:00,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:57:00,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:57:00,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:00,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:57:00,614 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr20ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:57:00,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:00,615 INFO L82 PathProgramCache]: Analyzing trace with hash 315085343, now seen corresponding path program 1 times [2021-10-13 00:57:00,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:00,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910440508] [2021-10-13 00:57:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:00,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:00,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:57:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:00,714 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 00:57:00,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:00,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910440508] [2021-10-13 00:57:00,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910440508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:57:00,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:57:00,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:57:00,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437510041] [2021-10-13 00:57:00,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:57:00,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:57:00,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:57:00,718 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 00:57:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:00,907 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-13 00:57:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:57:00,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-10-13 00:57:00,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:57:00,909 INFO L225 Difference]: With dead ends: 110 [2021-10-13 00:57:00,909 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 00:57:00,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:57:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 00:57:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2021-10-13 00:57:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.509090909090909) internal successors, (83), 71 states have internal predecessors, (83), 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 00:57:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-10-13 00:57:00,917 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 18 [2021-10-13 00:57:00,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:57:00,917 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-10-13 00:57:00,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 00:57:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-10-13 00:57:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:57:00,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:57:00,919 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:00,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:57:00,919 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:57:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:00,920 INFO L82 PathProgramCache]: Analyzing trace with hash 315085504, now seen corresponding path program 1 times [2021-10-13 00:57:00,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:00,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081204458] [2021-10-13 00:57:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:00,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:00,939 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:57:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:01,001 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:57:01,012 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:57:01,013 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:57:01,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:57:01,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:57:01,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:57:01,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:57:01,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:57:01,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:57:01,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-13 00:57:01,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-13 00:57:01,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-13 00:57:01,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-13 00:57:01,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-13 00:57:01,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-13 00:57:01,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-13 00:57:01,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-13 00:57:01,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-13 00:57:01,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-13 00:57:01,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-13 00:57:01,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-13 00:57:01,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-13 00:57:01,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-13 00:57:01,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 00:57:01,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:57:01,027 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:57:01,044 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 00:57:01,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:57:01 BoogieIcfgContainer [2021-10-13 00:57:01,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:57:01,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:57:01,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:57:01,068 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:57:01,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:56:59" (3/4) ... [2021-10-13 00:57:01,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:57:01,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:57:01,073 INFO L168 Benchmark]: Toolchain (without parser) took 2838.27 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 74.3 MB in the beginning and 93.3 MB in the end (delta: -19.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:01,074 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:57:01,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.96 ms. Allocated memory is still 94.4 MB. Free memory was 74.0 MB in the beginning and 65.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:01,080 INFO L168 Benchmark]: Boogie Preprocessor took 57.55 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 62.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:01,081 INFO L168 Benchmark]: RCFGBuilder took 649.56 ms. Allocated memory is still 94.4 MB. Free memory was 62.2 MB in the beginning and 40.8 MB in the end (delta: 21.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:01,082 INFO L168 Benchmark]: TraceAbstraction took 1647.84 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 40.3 MB in the beginning and 94.2 MB in the end (delta: -53.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:01,082 INFO L168 Benchmark]: Witness Printer took 3.83 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 93.3 MB in the end (delta: 855.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:57:01,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 470.96 ms. Allocated memory is still 94.4 MB. Free memory was 74.0 MB in the beginning and 65.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.55 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 62.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 649.56 ms. Allocated memory is still 94.4 MB. Free memory was 62.2 MB in the beginning and 40.8 MB in the end (delta: 21.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1647.84 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 40.3 MB in the beginning and 94.2 MB in the end (delta: -53.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.83 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 93.3 MB in the end (delta: 855.7 kB). 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 = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0] [L536] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: 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: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: 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: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: 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, 81 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 1513.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 16.9ms, AutomataDifference: 738.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 158 SDtfs, 275 SDslu, 173 SDs, 0 SdLazy, 433 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 444.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 143.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 51.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.1ms SsaConstructionTime, 101.3ms SatisfiabilityAnalysisTime, 322.2ms InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 00:57:01,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:57:03,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:57:03,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:57:03,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:57:03,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:57:03,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:57:03,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:57:03,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:57:03,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:57:03,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:57:03,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:57:03,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:57:03,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:57:03,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:57:03,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:57:03,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:57:03,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:57:03,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:57:03,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:57:03,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:57:03,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:57:03,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:57:03,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:57:03,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:57:03,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:57:03,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:57:03,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:57:03,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:57:03,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:57:03,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:57:03,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:57:03,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:57:03,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:57:03,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:57:03,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:57:03,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:57:03,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:57:03,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:57:03,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:57:03,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:57:03,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:57:03,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:57:03,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:57:03,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:57:03,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:57:03,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:57:03,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:57:03,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:57:03,748 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:57:03,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:57:03,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:57:03,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:57:03,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:57:03,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:57:03,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:57:03,749 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:57:03,749 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:57:03,750 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:57:03,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:57:03,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:57:03,750 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:57:03,750 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:57:03,751 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:57:03,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:57:03,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:57:03,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:57:03,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:57:03,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:57:03,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:57:03,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:57:03,752 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:57:03,752 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:57:03,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:57:03,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:57:03,753 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_5067b869-c15b-45a2-ad11-47b9d7818a87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2021-10-13 00:57:04,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:57:04,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:57:04,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:57:04,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:57:04,166 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:57:04,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-13 00:57:04,249 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data/c1eb9932f/be47232aee8e42f0b28e63645ed55c19/FLAG17fcc1b3c [2021-10-13 00:57:04,793 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:57:04,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-13 00:57:04,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data/c1eb9932f/be47232aee8e42f0b28e63645ed55c19/FLAG17fcc1b3c [2021-10-13 00:57:05,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/data/c1eb9932f/be47232aee8e42f0b28e63645ed55c19 [2021-10-13 00:57:05,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:57:05,109 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:57:05,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:57:05,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:57:05,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:57:05,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be67717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05, skipping insertion in model container [2021-10-13 00:57:05,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:57:05,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:57:05,565 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_5067b869-c15b-45a2-ad11-47b9d7818a87/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-13 00:57:05,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:57:05,588 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:57:05,646 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_5067b869-c15b-45a2-ad11-47b9d7818a87/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-13 00:57:05,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:57:05,709 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:57:05,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05 WrapperNode [2021-10-13 00:57:05,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:57:05,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:57:05,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:57:05,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:57:05,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:57:05,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:57:05,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:57:05,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:57:05,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05" (1/1) ... [2021-10-13 00:57:05,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:57:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:05,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:05,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:57:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:57:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:57:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:57:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:57:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:57:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:57:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:57:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:57:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:57:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-13 00:57:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:57:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:57:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:57:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:57:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:57:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:57:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:57:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:57:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:57:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:57:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:57:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:57:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:57:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:57:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:57:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:57:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:57:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:57:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:57:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:57:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:57:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:57:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:57:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:57:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:57:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:57:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:57:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:57:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:57:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:57:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:57:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:57:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:57:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:57:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:57:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:57:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:57:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:57:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:57:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:57:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:57:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:57:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:57:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:57:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:57:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:57:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:57:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:57:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:57:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:57:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:57:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:57:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:57:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:57:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:57:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:57:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:57:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:57:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:57:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:57:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:57:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:57:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:57:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:57:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:57:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:57:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:57:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:57:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:57:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:57:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:57:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:57:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:57:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:57:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:57:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:57:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:57:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:57:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:57:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:57:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:57:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:57:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:57:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:57:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:57:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:57:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:57:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:57:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:57:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:57:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:57:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:57:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:57:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:57:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:57:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:57:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:57:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:57:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:57:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:57:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:57:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:57:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:57:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:57:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:57:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:57:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:57:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:57:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:57:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:57:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:57:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:57:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:57:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:57:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-13 00:57:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:57:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:57:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 00:57:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:57:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:57:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 00:57:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:57:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:57:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:57:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:57:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 00:57:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 00:57:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:57:06,379 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-13 00:57:06,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:57:06,701 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-13 00:57:06,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:57:06 BoogieIcfgContainer [2021-10-13 00:57:06,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:57:06,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:57:06,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:57:06,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:57:06,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:57:05" (1/3) ... [2021-10-13 00:57:06,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7ed8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:57:06, skipping insertion in model container [2021-10-13 00:57:06,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:57:05" (2/3) ... [2021-10-13 00:57:06,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7ed8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:57:06, skipping insertion in model container [2021-10-13 00:57:06,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:57:06" (3/3) ... [2021-10-13 00:57:06,729 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-10-13 00:57:06,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:57:06,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-13 00:57:06,794 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:57:06,800 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 00:57:06,800 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-13 00:57:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 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 00:57:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:57:06,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:57:06,848 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:06,848 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:57:06,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:06,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1040661460, now seen corresponding path program 1 times [2021-10-13 00:57:06,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:57:06,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958903850] [2021-10-13 00:57:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:06,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:57:06,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:57:06,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:57:06,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:57:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:07,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 00:57:07,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:07,155 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 00:57:07,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:57:07,190 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 00:57:07,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:57:07,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958903850] [2021-10-13 00:57:07,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958903850] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:57:07,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:57:07,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:57:07,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736931816] [2021-10-13 00:57:07,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:57:07,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:57:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:57:07,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:57:07,214 INFO L87 Difference]: Start difference. First operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 00:57:07,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:07,233 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-13 00:57:07,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:57:07,235 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 00:57:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:57:07,242 INFO L225 Difference]: With dead ends: 61 [2021-10-13 00:57:07,242 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 00:57:07,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:57:07,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 00:57:07,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-13 00:57:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 29 states have (on average 1.896551724137931) internal successors, (55), 50 states have internal predecessors, (55), 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 00:57:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-13 00:57:07,279 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2021-10-13 00:57:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:57:07,279 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-13 00:57:07,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 00:57:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-13 00:57:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:57:07,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:57:07,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:07,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:07,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:57:07,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:57:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1040662421, now seen corresponding path program 1 times [2021-10-13 00:57:07,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:57:07,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99147834] [2021-10-13 00:57:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:07,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:57:07,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:57:07,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:57:07,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:57:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:07,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:57:07,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:07,679 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 00:57:07,744 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 00:57:07,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:57:07,799 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 00:57:07,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:57:07,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99147834] [2021-10-13 00:57:07,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99147834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:57:07,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:57:07,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:57:07,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712346981] [2021-10-13 00:57:07,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:57:07,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:57:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:57:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:57:07,806 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. 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 00:57:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:08,052 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-13 00:57:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:57:08,053 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 00:57:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:57:08,056 INFO L225 Difference]: With dead ends: 61 [2021-10-13 00:57:08,056 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:57:08,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:57:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:57:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-10-13 00:57:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 52 states have internal predecessors, (64), 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 00:57:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-10-13 00:57:08,071 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 10 [2021-10-13 00:57:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:57:08,074 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-10-13 00:57:08,074 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 00:57:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-10-13 00:57:08,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:57:08,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:57:08,075 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:08,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:08,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:57:08,298 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:57:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1040662420, now seen corresponding path program 1 times [2021-10-13 00:57:08,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:57:08,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655520381] [2021-10-13 00:57:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:08,300 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:57:08,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:57:08,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:57:08,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:57:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:08,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:57:08,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:08,454 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 00:57:08,540 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 00:57:08,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:57:08,710 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 00:57:08,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:57:08,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655520381] [2021-10-13 00:57:08,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655520381] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:57:08,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:57:08,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 00:57:08,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941964093] [2021-10-13 00:57:08,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:57:08,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:57:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:57:08,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:57:08,721 INFO L87 Difference]: Start difference. First operand 56 states and 67 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 00:57:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:09,096 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2021-10-13 00:57:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:57:09,098 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 00:57:09,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:57:09,099 INFO L225 Difference]: With dead ends: 73 [2021-10-13 00:57:09,099 INFO L226 Difference]: Without dead ends: 73 [2021-10-13 00:57:09,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:57:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-13 00:57:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2021-10-13 00:57:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 59 states have internal predecessors, (68), 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 00:57:09,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-10-13 00:57:09,106 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2021-10-13 00:57:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:57:09,110 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-10-13 00:57:09,110 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 00:57:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-10-13 00:57:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:57:09,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:57:09,111 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:09,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:09,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:57:09,312 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:57:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:09,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1562517626, now seen corresponding path program 1 times [2021-10-13 00:57:09,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:57:09,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676396841] [2021-10-13 00:57:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:09,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:57:09,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:57:09,316 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:57:09,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:57:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:09,475 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:57:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:09,542 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:57:09,543 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:57:09,544 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:57:09,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:57:09,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:57:09,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:57:09,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:57:09,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:57:09,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:57:09,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-13 00:57:09,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-13 00:57:09,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-13 00:57:09,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-13 00:57:09,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-13 00:57:09,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-13 00:57:09,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-13 00:57:09,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-13 00:57:09,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-13 00:57:09,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-13 00:57:09,549 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-13 00:57:09,549 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-13 00:57:09,549 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-13 00:57:09,549 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-13 00:57:09,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 00:57:09,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:09,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:57:09,755 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:57:09,762 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 00:57:09,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:57:09 BoogieIcfgContainer [2021-10-13 00:57:09,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:57:09,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:57:09,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:57:09,774 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:57:09,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:57:06" (3/4) ... [2021-10-13 00:57:09,778 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:57:09,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:57:09,779 INFO L168 Benchmark]: Toolchain (without parser) took 4669.17 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 42.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:09,780 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 67.1 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:57:09,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.92 ms. Allocated memory is still 67.1 MB. Free memory was 44.4 MB in the beginning and 42.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:09,781 INFO L168 Benchmark]: Boogie Preprocessor took 114.58 ms. Allocated memory is still 67.1 MB. Free memory was 42.9 MB in the beginning and 39.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:09,781 INFO L168 Benchmark]: RCFGBuilder took 881.77 ms. Allocated memory is still 67.1 MB. Free memory was 39.6 MB in the beginning and 35.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:09,782 INFO L168 Benchmark]: TraceAbstraction took 3063.91 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 34.5 MB in the beginning and 42.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:09,783 INFO L168 Benchmark]: Witness Printer took 3.80 ms. Allocated memory is still 86.0 MB. Free memory was 42.8 MB in the beginning and 42.2 MB in the end (delta: 582.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:57:09,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 67.1 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 599.92 ms. Allocated memory is still 67.1 MB. Free memory was 44.4 MB in the beginning and 42.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 114.58 ms. Allocated memory is still 67.1 MB. Free memory was 42.9 MB in the beginning and 39.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 881.77 ms. Allocated memory is still 67.1 MB. Free memory was 39.6 MB in the beginning and 35.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3063.91 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 34.5 MB in the beginning and 42.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.80 ms. Allocated memory is still 86.0 MB. Free memory was 42.8 MB in the beginning and 42.2 MB in the end (delta: 582.5 kB). 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 = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648] [L536] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={1:0}, flag=2147483648, p={1:0}] [L549] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L550] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, p={1:0}] [L551] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L551] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: 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: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: 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: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: 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, 86 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 2961.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 25.7ms, AutomataDifference: 684.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 119 SDtfs, 222 SDslu, 37 SDs, 0 SdLazy, 103 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 438.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 146.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.5ms SsaConstructionTime, 98.1ms SatisfiabilityAnalysisTime, 555.9ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 206 SizeOfPredicates, 3 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 00:57:09,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5067b869-c15b-45a2-ad11-47b9d7818a87/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...