./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:42:44,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:42:44,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:42:44,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:42:44,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:42:44,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:42:44,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:42:44,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:42:44,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:42:44,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:42:44,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:42:44,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:42:44,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:42:44,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:42:44,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:42:44,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:42:44,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:42:44,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:42:44,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:42:44,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:42:44,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:42:44,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:42:44,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:42:44,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:42:44,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:42:44,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:42:44,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:42:44,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:42:44,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:42:44,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:42:44,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:42:44,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:42:45,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:42:45,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:42:45,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:42:45,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:42:45,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:42:45,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:42:45,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:42:45,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:42:45,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:42:45,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:42:45,041 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:42:45,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:42:45,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:42:45,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:42:45,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:42:45,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:42:45,045 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:42:45,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:42:45,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:42:45,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:42:45,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:42:45,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:42:45,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:42:45,049 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:42:45,049 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:42:45,050 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:42:45,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:42:45,051 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:42:45,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:42:45,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:42:45,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:42:45,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:42:45,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:42:45,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:42:45,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:42:45,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:42:45,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:42:45,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:42:45,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:42:45,056 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_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 [2021-10-21 19:42:45,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:42:45,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:42:45,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:42:45,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:42:45,428 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:42:45,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-10-21 19:42:45,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data/0597751bb/59bbb66631234dfe9545f7d9097385e1/FLAG3088eb492 [2021-10-21 19:42:46,136 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:42:46,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-10-21 19:42:46,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data/0597751bb/59bbb66631234dfe9545f7d9097385e1/FLAG3088eb492 [2021-10-21 19:42:46,440 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data/0597751bb/59bbb66631234dfe9545f7d9097385e1 [2021-10-21 19:42:46,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:42:46,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:42:46,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:42:46,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:42:46,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:42:46,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:42:46" (1/1) ... [2021-10-21 19:42:46,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@149b51ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:46, skipping insertion in model container [2021-10-21 19:42:46,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:42:46" (1/1) ... [2021-10-21 19:42:46,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:42:46,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:42:46,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:42:46,948 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:42:47,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:42:47,050 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:42:47,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47 WrapperNode [2021-10-21 19:42:47,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:42:47,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:42:47,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:42:47,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:42:47,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47" (1/1) ... [2021-10-21 19:42:47,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47" (1/1) ... [2021-10-21 19:42:47,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47" (1/1) ... [2021-10-21 19:42:47,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47" (1/1) ... [2021-10-21 19:42:47,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47" (1/1) ... [2021-10-21 19:42:47,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47" (1/1) ... [2021-10-21 19:42:47,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47" (1/1) ... [2021-10-21 19:42:47,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:42:47,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:42:47,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:42:47,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:42:47,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47" (1/1) ... [2021-10-21 19:42:47,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:42:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:47,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:42:47,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:42:47,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:42:47,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:42:47,273 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:42:47,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:42:47,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:42:47,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:42:47,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:42:47,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:42:47,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:42:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:42:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:42:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:42:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:42:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:42:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:42:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:42:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:42:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:42:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:42:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:42:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:42:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:42:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:42:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:42:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:42:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:42:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:42:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:42:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:42:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:42:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:42:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:42:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:42:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:42:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:42:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:42:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:42:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:42:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:42:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:42:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:42:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:42:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:42:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:42:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:42:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:42:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:42:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:42:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:42:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:42:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:42:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:42:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:42:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:42:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:42:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:42:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:42:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:42:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:42:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:42:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:42:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:42:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:42:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:42:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:42:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:42:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:42:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:42:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:42:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:42:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:42:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:42:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:42:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:42:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:42:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:42:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:42:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:42:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:42:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:42:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:42:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:42:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:42:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:42:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:42:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:42:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:42:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:42:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:42:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:42:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:42:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:42:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:42:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:42:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:42:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:42:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:42:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:42:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:42:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:42:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:42:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:42:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:42:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:42:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:42:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:42:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:42:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:42:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:42:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:42:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:42:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:42:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:42:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:42:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:42:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:42:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:42:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:42:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:42:47,294 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:42:47,294 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:42:47,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:42:47,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:42:47,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:42:47,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:42:47,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:42:47,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:42:47,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:42:47,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:42:47,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:42:47,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:42:47,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:42:47,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:42:47,875 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-21 19:42:47,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:47 BoogieIcfgContainer [2021-10-21 19:42:47,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:42:47,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:42:47,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:42:47,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:42:47,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:42:46" (1/3) ... [2021-10-21 19:42:47,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a8e356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:42:47, skipping insertion in model container [2021-10-21 19:42:47,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:47" (2/3) ... [2021-10-21 19:42:47,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a8e356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:42:47, skipping insertion in model container [2021-10-21 19:42:47,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:47" (3/3) ... [2021-10-21 19:42:47,901 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-10-21 19:42:47,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:42:47,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-21 19:42:47,961 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:42:47,968 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:42:47,968 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-21 19:42:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:42:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:42:47,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:47,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:47,997 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:42:48,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:48,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1484797383, now seen corresponding path program 1 times [2021-10-21 19:42:48,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:48,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034960502] [2021-10-21 19:42:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:48,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:42:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:48,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:48,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034960502] [2021-10-21 19:42:48,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034960502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:48,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:48,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:42:48,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352356068] [2021-10-21 19:42:48,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:42:48,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:48,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:42:48,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:48,380 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:48,507 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-10-21 19:42:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:42:48,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-21 19:42:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:48,518 INFO L225 Difference]: With dead ends: 25 [2021-10-21 19:42:48,518 INFO L226 Difference]: Without dead ends: 22 [2021-10-21 19:42:48,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-21 19:42:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-21 19:42:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-21 19:42:48,564 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2021-10-21 19:42:48,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:48,565 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-21 19:42:48,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:48,565 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-21 19:42:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:42:48,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:48,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:48,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:42:48,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:42:48,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:48,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1484797382, now seen corresponding path program 1 times [2021-10-21 19:42:48,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:48,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810702984] [2021-10-21 19:42:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:48,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:42:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:48,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:48,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810702984] [2021-10-21 19:42:48,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810702984] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:48,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:48,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:42:48,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676881127] [2021-10-21 19:42:48,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:42:48,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:42:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:48,789 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:48,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:48,839 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-21 19:42:48,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:42:48,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-21 19:42:48,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:48,841 INFO L225 Difference]: With dead ends: 17 [2021-10-21 19:42:48,841 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 19:42:48,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:48,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 19:42:48,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-21 19:42:48,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-21 19:42:48,846 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-10-21 19:42:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:48,847 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-21 19:42:48,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-21 19:42:48,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:42:48,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:48,849 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:48,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:42:48,849 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:42:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:48,850 INFO L82 PathProgramCache]: Analyzing trace with hash 910104040, now seen corresponding path program 1 times [2021-10-21 19:42:48,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:48,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125382549] [2021-10-21 19:42:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:48,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:42:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:48,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:48,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125382549] [2021-10-21 19:42:48,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125382549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:48,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:48,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:42:48,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528032813] [2021-10-21 19:42:48,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:42:48,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:42:48,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:42:48,959 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:49,048 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-21 19:42:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:42:49,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-21 19:42:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:49,054 INFO L225 Difference]: With dead ends: 21 [2021-10-21 19:42:49,054 INFO L226 Difference]: Without dead ends: 21 [2021-10-21 19:42:49,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:42:49,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-21 19:42:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-21 19:42:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-21 19:42:49,060 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-10-21 19:42:49,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:49,060 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-21 19:42:49,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:49,061 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-10-21 19:42:49,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:42:49,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:49,062 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:49,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:42:49,063 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:42:49,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:49,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1057867400, now seen corresponding path program 1 times [2021-10-21 19:42:49,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:49,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210511867] [2021-10-21 19:42:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:49,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:42:49,092 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:42:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:42:49,145 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:42:49,145 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:42:49,146 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr10ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:42:49,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:42:49,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:42:49,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 19:42:49,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 19:42:49,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 19:42:49,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 19:42:49,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 19:42:49,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 19:42:49,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 19:42:49,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 19:42:49,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:42:49,159 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:42:49,170 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 19:42:49,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:42:49 BoogieIcfgContainer [2021-10-21 19:42:49,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:42:49,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:42:49,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:42:49,184 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:42:49,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:47" (3/4) ... [2021-10-21 19:42:49,188 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:42:49,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:42:49,191 INFO L168 Benchmark]: Toolchain (without parser) took 2744.71 ms. Allocated memory is still 107.0 MB. Free memory was 67.9 MB in the beginning and 46.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:49,192 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 107.0 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:42:49,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 595.84 ms. Allocated memory is still 107.0 MB. Free memory was 67.7 MB in the beginning and 77.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:49,193 INFO L168 Benchmark]: Boogie Preprocessor took 116.21 ms. Allocated memory is still 107.0 MB. Free memory was 77.7 MB in the beginning and 75.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:49,194 INFO L168 Benchmark]: RCFGBuilder took 712.15 ms. Allocated memory is still 107.0 MB. Free memory was 75.2 MB in the beginning and 56.4 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:49,195 INFO L168 Benchmark]: TraceAbstraction took 1299.91 ms. Allocated memory is still 107.0 MB. Free memory was 55.8 MB in the beginning and 46.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:49,196 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 107.0 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:42:49,199 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 107.0 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 595.84 ms. Allocated memory is still 107.0 MB. Free memory was 67.7 MB in the beginning and 77.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 116.21 ms. Allocated memory is still 107.0 MB. Free memory was 77.7 MB in the beginning and 75.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 712.15 ms. Allocated memory is still 107.0 MB. Free memory was 75.2 MB in the beginning and 56.4 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1299.91 ms. Allocated memory is still 107.0 MB. Free memory was 55.8 MB in the beginning and 46.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.05 ms. Allocated memory is still 107.0 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={3:0}] [L540] EXPR data.str.p2 VAL [data={3:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1198.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 16.9ms, AutomataDifference: 315.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 26 SDslu, 41 SDs, 0 SdLazy, 97 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 171.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 131.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.9ms SsaConstructionTime, 123.3ms SatisfiabilityAnalysisTime, 400.8ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 19:42:49,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:42:52,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:42:52,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:42:52,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:42:52,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:42:52,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:42:52,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:42:52,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:42:52,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:42:52,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:42:52,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:42:52,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:42:52,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:42:52,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:42:52,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:42:52,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:42:52,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:42:52,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:42:52,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:42:52,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:42:52,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:42:52,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:42:52,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:42:52,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:42:52,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:42:52,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:42:52,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:42:52,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:42:52,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:42:52,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:42:52,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:42:52,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:42:52,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:42:52,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:42:52,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:42:52,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:42:52,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:42:52,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:42:52,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:42:52,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:42:52,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:42:52,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 19:42:52,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:42:52,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:42:52,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:42:52,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:42:52,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:42:52,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:42:52,374 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:42:52,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:42:52,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:42:52,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:42:52,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:42:52,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:42:52,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:42:52,378 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:42:52,378 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:42:52,379 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:42:52,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:42:52,380 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:42:52,380 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:42:52,380 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:42:52,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:42:52,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:42:52,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:42:52,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:42:52,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:42:52,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:42:52,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:42:52,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:42:52,384 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:42:52,384 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:42:52,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:42:52,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:42:52,385 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_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 [2021-10-21 19:42:52,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:42:52,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:42:52,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:42:52,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:42:52,921 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:42:52,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-10-21 19:42:53,013 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data/5cfa9a8dc/005d9f5ca9264cd6a9ef3364bd1878b5/FLAG0acbefe51 [2021-10-21 19:42:53,713 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:42:53,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-10-21 19:42:53,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data/5cfa9a8dc/005d9f5ca9264cd6a9ef3364bd1878b5/FLAG0acbefe51 [2021-10-21 19:42:53,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/data/5cfa9a8dc/005d9f5ca9264cd6a9ef3364bd1878b5 [2021-10-21 19:42:53,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:42:53,750 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:42:53,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:42:53,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:42:53,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:42:53,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:42:53" (1/1) ... [2021-10-21 19:42:53,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7516a71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:53, skipping insertion in model container [2021-10-21 19:42:53,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:42:53" (1/1) ... [2021-10-21 19:42:53,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:42:53,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:42:54,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:42:54,200 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:42:54,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:42:54,336 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:42:54,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54 WrapperNode [2021-10-21 19:42:54,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:42:54,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:42:54,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:42:54,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:42:54,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54" (1/1) ... [2021-10-21 19:42:54,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54" (1/1) ... [2021-10-21 19:42:54,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54" (1/1) ... [2021-10-21 19:42:54,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54" (1/1) ... [2021-10-21 19:42:54,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54" (1/1) ... [2021-10-21 19:42:54,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54" (1/1) ... [2021-10-21 19:42:54,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54" (1/1) ... [2021-10-21 19:42:54,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:42:54,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:42:54,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:42:54,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:42:54,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54" (1/1) ... [2021-10-21 19:42:54,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:42:54,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:54,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:42:54,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:42:54,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:42:54,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:42:54,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:42:54,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:42:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:42:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:42:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:42:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:42:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:42:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:42:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:42:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:42:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:42:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:42:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:42:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:42:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:42:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:42:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:42:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:42:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:42:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:42:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:42:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:42:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:42:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:42:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:42:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:42:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:42:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:42:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:42:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:42:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:42:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:42:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:42:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:42:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:42:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:42:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:42:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:42:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:42:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:42:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:42:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:42:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:42:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:42:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:42:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:42:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:42:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:42:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:42:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:42:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:42:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:42:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:42:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:42:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:42:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:42:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:42:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:42:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:42:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:42:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:42:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:42:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:42:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:42:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:42:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:42:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:42:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:42:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:42:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:42:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:42:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:42:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:42:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:42:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:42:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:42:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:42:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:42:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:42:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:42:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:42:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:42:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:42:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:42:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:42:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:42:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:42:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:42:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:42:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:42:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:42:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:42:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:42:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:42:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:42:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:42:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:42:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:42:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:42:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:42:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:42:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:42:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:42:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:42:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:42:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:42:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:42:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:42:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:42:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:42:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:42:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:42:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:42:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:42:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:42:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:42:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:42:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:42:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:42:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:42:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:42:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:42:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:42:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:42:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 19:42:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 19:42:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-21 19:42:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:42:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:42:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:42:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:42:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:42:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-21 19:42:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:42:55,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:42:55,360 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-21 19:42:55,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:55 BoogieIcfgContainer [2021-10-21 19:42:55,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:42:55,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:42:55,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:42:55,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:42:55,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:42:53" (1/3) ... [2021-10-21 19:42:55,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b07feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:42:55, skipping insertion in model container [2021-10-21 19:42:55,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:54" (2/3) ... [2021-10-21 19:42:55,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b07feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:42:55, skipping insertion in model container [2021-10-21 19:42:55,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:55" (3/3) ... [2021-10-21 19:42:55,374 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-10-21 19:42:55,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:42:55,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-21 19:42:55,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:42:55,448 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:42:55,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-21 19:42:55,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:42:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:42:55,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:55,476 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:55,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:42:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:55,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1511250447, now seen corresponding path program 1 times [2021-10-21 19:42:55,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:42:55,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442468314] [2021-10-21 19:42:55,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:55,501 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:42:55,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:42:55,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:42:55,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:42:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:55,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:42:55,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:55,848 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-10-21 19:42:55,850 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 1 case distinctions, treesize of input 9 treesize of output 13 [2021-10-21 19:42:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:55,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:42:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:56,033 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:42:56,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442468314] [2021-10-21 19:42:56,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442468314] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:56,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:56,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:42:56,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515778005] [2021-10-21 19:42:56,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:42:56,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:42:56,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:42:56,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:42:56,072 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:56,206 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-10-21 19:42:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:42:56,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-21 19:42:56,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:56,219 INFO L225 Difference]: With dead ends: 25 [2021-10-21 19:42:56,219 INFO L226 Difference]: Without dead ends: 22 [2021-10-21 19:42:56,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:42:56,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-21 19:42:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-21 19:42:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-21 19:42:56,263 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2021-10-21 19:42:56,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:56,264 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-21 19:42:56,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-21 19:42:56,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:42:56,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:56,266 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:56,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:56,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:42:56,480 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:42:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:56,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1511250448, now seen corresponding path program 1 times [2021-10-21 19:42:56,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:42:56,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92104133] [2021-10-21 19:42:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:56,483 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:42:56,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:42:56,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:42:56,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:42:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:56,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:42:56,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:56,729 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 19:42:56,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-10-21 19:42:56,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-10-21 19:42:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:56,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:42:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:56,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:42:56,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92104133] [2021-10-21 19:42:56,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92104133] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:56,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:56,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-21 19:42:56,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361742499] [2021-10-21 19:42:56,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:42:56,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:42:56,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:42:56,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:56,990 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:57,078 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-21 19:42:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:42:57,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-21 19:42:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:57,080 INFO L225 Difference]: With dead ends: 17 [2021-10-21 19:42:57,080 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 19:42:57,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:57,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 19:42:57,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-21 19:42:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-21 19:42:57,085 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-10-21 19:42:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:57,086 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-21 19:42:57,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:42:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-21 19:42:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:42:57,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:57,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:57,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:57,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:42:57,288 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:42:57,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:57,289 INFO L82 PathProgramCache]: Analyzing trace with hash -127243832, now seen corresponding path program 1 times [2021-10-21 19:42:57,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:42:57,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216748290] [2021-10-21 19:42:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:57,291 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:42:57,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:42:57,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:42:57,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:42:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:42:57,546 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:42:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:42:57,644 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 19:42:57,645 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:42:57,646 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr10ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:42:57,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:42:57,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:42:57,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 19:42:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 19:42:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 19:42:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 19:42:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 19:42:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 19:42:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 19:42:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 19:42:57,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:57,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:42:57,866 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:42:57,878 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 19:42:57,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:42:57 BoogieIcfgContainer [2021-10-21 19:42:57,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:42:57,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:42:57,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:42:57,892 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:42:57,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:55" (3/4) ... [2021-10-21 19:42:57,897 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:42:57,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:42:57,898 INFO L168 Benchmark]: Toolchain (without parser) took 4147.97 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 41.5 MB in the beginning and 49.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:57,899 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:42:57,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.67 ms. Allocated memory is still 62.9 MB. Free memory was 41.4 MB in the beginning and 39.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:57,901 INFO L168 Benchmark]: Boogie Preprocessor took 122.15 ms. Allocated memory is still 62.9 MB. Free memory was 39.4 MB in the beginning and 36.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:57,902 INFO L168 Benchmark]: RCFGBuilder took 900.13 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 36.4 MB in the beginning and 54.8 MB in the end (delta: -18.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:57,903 INFO L168 Benchmark]: TraceAbstraction took 2526.02 ms. Allocated memory is still 79.7 MB. Free memory was 54.5 MB in the beginning and 49.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:42:57,903 INFO L168 Benchmark]: Witness Printer took 5.23 ms. Allocated memory is still 79.7 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:42:57,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 587.67 ms. Allocated memory is still 62.9 MB. Free memory was 41.4 MB in the beginning and 39.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 122.15 ms. Allocated memory is still 62.9 MB. Free memory was 39.4 MB in the beginning and 36.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 900.13 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 36.4 MB in the beginning and 54.8 MB in the end (delta: -18.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2526.02 ms. Allocated memory is still 79.7 MB. Free memory was 54.5 MB in the beginning and 49.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.23 ms. Allocated memory is still 79.7 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={15:0}, malloc(37U)={1:0}] [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={15:0}] [L540] EXPR data.str.p2 VAL [data={15:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 54 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 2426.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 15.7ms, AutomataDifference: 268.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 35 SDslu, 11 SDs, 0 SdLazy, 23 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 160.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 49.4ms SsaConstructionTime, 141.1ms SatisfiabilityAnalysisTime, 678.2ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 1 QuantifiedInterpolants, 62 SizeOfPredicates, 5 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 19:42:57,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3158579-0d5e-440e-924e-5840d4d340ed/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...