./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:08:44,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:08:44,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:08:44,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:08:44,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:08:44,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:08:44,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:08:44,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:08:44,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:08:44,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:08:44,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:08:44,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:08:44,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:08:44,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:08:44,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:08:44,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:08:44,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:08:44,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:08:44,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:08:44,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:08:44,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:08:44,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:08:44,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:08:44,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:08:44,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:08:44,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:08:44,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:08:44,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:08:44,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:08:44,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:08:44,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:08:44,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:08:44,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:08:44,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:08:44,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:08:44,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:08:44,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:08:44,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:08:44,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:08:44,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:08:44,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:08:44,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:08:44,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:08:44,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:08:44,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:08:44,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:08:44,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:08:44,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:08:44,240 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:08:44,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:08:44,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:08:44,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:08:44,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:08:44,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:08:44,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:08:44,242 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:08:44,243 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:08:44,243 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:08:44,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:08:44,243 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:08:44,243 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:08:44,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:08:44,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:08:44,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:08:44,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:08:44,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:08:44,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:08:44,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:08:44,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:08:44,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:08:44,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:08:44,246 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_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da [2021-10-28 23:08:44,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:08:44,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:08:44,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:08:44,580 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:08:44,582 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:08:44,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-28 23:08:44,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data/375ef15ac/4492b0dbaecf4f0e8e3d8f48ad3900f4/FLAG43ba8f753 [2021-10-28 23:08:45,305 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:08:45,306 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-28 23:08:45,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data/375ef15ac/4492b0dbaecf4f0e8e3d8f48ad3900f4/FLAG43ba8f753 [2021-10-28 23:08:45,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data/375ef15ac/4492b0dbaecf4f0e8e3d8f48ad3900f4 [2021-10-28 23:08:45,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:08:45,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:08:45,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:45,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:08:45,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:08:45,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:45" (1/1) ... [2021-10-28 23:08:45,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ac865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:45, skipping insertion in model container [2021-10-28 23:08:45,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:45" (1/1) ... [2021-10-28 23:08:45,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:08:45,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:08:45,929 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-28 23:08:45,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:45,942 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:08:45,981 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-28 23:08:45,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:46,021 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:08:46,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46 WrapperNode [2021-10-28 23:08:46,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:46,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:08:46,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:08:46,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:08:46,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46" (1/1) ... [2021-10-28 23:08:46,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46" (1/1) ... [2021-10-28 23:08:46,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46" (1/1) ... [2021-10-28 23:08:46,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46" (1/1) ... [2021-10-28 23:08:46,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46" (1/1) ... [2021-10-28 23:08:46,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46" (1/1) ... [2021-10-28 23:08:46,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46" (1/1) ... [2021-10-28 23:08:46,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:08:46,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:08:46,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:08:46,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:08:46,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46" (1/1) ... [2021-10-28 23:08:46,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:08:46,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:46,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:08:46,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:08:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:08:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:08:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:08:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:08:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:08:46,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:08:46,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:08:46,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:08:46,239 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 23:08:46,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:08:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:08:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:08:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:08:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:08:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:08:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:08:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:08:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:08:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:08:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:08:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:08:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:08:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:08:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:08:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:08:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:08:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:08:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:08:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:08:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:08:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:08:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:08:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:08:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:08:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:08:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:08:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:08:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:08:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:08:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:08:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:08:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:08:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:08:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:08:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:08:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:08:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:08:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:08:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:08:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:08:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:08:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:08:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:08:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:08:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:08:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:08:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:08:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:08:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:08:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:08:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:08:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:08:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:08:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:08:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:08:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:08:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:08:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:08:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:08:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:08:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:08:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:08:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:08:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:08:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:08:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:08:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:08:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:08:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:08:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:08:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:08:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:08:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:08:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:08:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:08:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:08:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:08:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:08:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:08:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:08:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:08:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:08:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:08:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:08:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:08:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:08:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:08:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:08:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:08:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:08:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:08:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:08:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:08:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:08:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:08:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:08:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:08:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:08:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:08:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:08:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:08:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:08:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:08:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:08:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:08:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:08:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:08:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:08:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:08:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:08:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:08:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:08:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:08:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 23:08:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:08:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:08:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:08:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:08:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:08:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:08:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:08:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:08:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:08:46,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:08:46,687 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 23:08:46,893 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:08:46,894 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 23:08:46,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:46 BoogieIcfgContainer [2021-10-28 23:08:46,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:08:46,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:08:46,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:08:46,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:08:46,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:08:45" (1/3) ... [2021-10-28 23:08:46,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29619320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:46, skipping insertion in model container [2021-10-28 23:08:46,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:46" (2/3) ... [2021-10-28 23:08:46,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29619320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:46, skipping insertion in model container [2021-10-28 23:08:46,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:46" (3/3) ... [2021-10-28 23:08:46,912 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-10-28 23:08:46,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:08:46,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-28 23:08:46,966 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:08:46,974 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:08:46,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-28 23:08:46,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:08:47,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:08:47,002 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:47,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:47,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:08:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1866589301, now seen corresponding path program 1 times [2021-10-28 23:08:47,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:47,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145369012] [2021-10-28 23:08:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:47,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:47,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:47,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:47,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145369012] [2021-10-28 23:08:47,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145369012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:47,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:47,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:08:47,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577679657] [2021-10-28 23:08:47,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:08:47,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:08:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:08:47,309 INFO L87 Difference]: Start difference. First operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:47,529 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-28 23:08:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:08:47,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:08:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:47,538 INFO L225 Difference]: With dead ends: 62 [2021-10-28 23:08:47,539 INFO L226 Difference]: Without dead ends: 55 [2021-10-28 23:08:47,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:08:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-28 23:08:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-28 23:08:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:47,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-28 23:08:47,595 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2021-10-28 23:08:47,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:47,596 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-28 23:08:47,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:47,596 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-28 23:08:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:08:47,597 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:47,597 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:47,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:08:47,598 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:08:47,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:47,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727141, now seen corresponding path program 1 times [2021-10-28 23:08:47,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:47,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34843910] [2021-10-28 23:08:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:47,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:47,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:47,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34843910] [2021-10-28 23:08:47,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34843910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:47,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:47,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:08:47,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122558193] [2021-10-28 23:08:47,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:08:47,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:47,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:08:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:08:47,709 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:47,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:47,904 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-28 23:08:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:08:47,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:08:47,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:47,914 INFO L225 Difference]: With dead ends: 63 [2021-10-28 23:08:47,914 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 23:08:47,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:08:47,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 23:08:47,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2021-10-28 23:08:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.736842105263158) internal successors, (66), 54 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-28 23:08:47,932 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-10-28 23:08:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:47,932 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-28 23:08:47,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-28 23:08:47,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:08:47,933 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:47,933 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:47,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:08:47,934 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:08:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727140, now seen corresponding path program 1 times [2021-10-28 23:08:47,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:47,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251555678] [2021-10-28 23:08:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:47,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:48,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:48,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:48,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251555678] [2021-10-28 23:08:48,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251555678] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:48,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:48,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:08:48,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302999472] [2021-10-28 23:08:48,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:08:48,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:48,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:08:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:08:48,128 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:48,319 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-10-28 23:08:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:08:48,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:08:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:48,324 INFO L225 Difference]: With dead ends: 76 [2021-10-28 23:08:48,324 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 23:08:48,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:08:48,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 23:08:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-10-28 23:08:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 63 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-10-28 23:08:48,343 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2021-10-28 23:08:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:48,344 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-10-28 23:08:48,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-10-28 23:08:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:08:48,346 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:48,346 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:48,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:08:48,347 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr20ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:08:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash 315085343, now seen corresponding path program 1 times [2021-10-28 23:08:48,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:48,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581854159] [2021-10-28 23:08:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:48,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:48,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:48,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581854159] [2021-10-28 23:08:48,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581854159] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:48,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:48,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:08:48,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839453476] [2021-10-28 23:08:48,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:08:48,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:48,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:08:48,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:08:48,521 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:48,737 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-28 23:08:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:08:48,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 23:08:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:48,744 INFO L225 Difference]: With dead ends: 110 [2021-10-28 23:08:48,744 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 23:08:48,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:08:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 23:08:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2021-10-28 23:08:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.509090909090909) internal successors, (83), 71 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-10-28 23:08:48,761 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 18 [2021-10-28 23:08:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:48,762 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-10-28 23:08:48,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-10-28 23:08:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:08:48,765 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:48,765 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:48,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:08:48,766 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:08:48,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:48,767 INFO L85 PathProgramCache]: Analyzing trace with hash 315085504, now seen corresponding path program 1 times [2021-10-28 23:08:48,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:48,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705326414] [2021-10-28 23:08:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:48,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:48,815 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:48,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:48,867 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:08:48,868 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:48,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:08:48,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:08:48,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:08:48,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:08:48,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:08:48,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:08:48,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:08:48,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:08:48,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:08:48,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:08:48,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:08:48,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:08:48,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:08:48,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:08:48,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:08:48,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:08:48,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:08:48,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:08:48,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:08:48,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:08:48,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:48,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:08:48,878 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-10-28 23:08:48,882 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:08:48,891 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:08:48,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:08:48 BoogieIcfgContainer [2021-10-28 23:08:48,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:08:48,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:08:48,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:08:48,906 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:08:48,907 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:46" (3/4) ... [2021-10-28 23:08:48,909 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:08:48,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:08:48,911 INFO L168 Benchmark]: Toolchain (without parser) took 3311.99 ms. Allocated memory is still 94.4 MB. Free memory was 65.5 MB in the beginning and 50.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,912 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 77.6 MB. Free memory was 44.0 MB in the beginning and 44.0 MB in the end (delta: 34.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:48,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.47 ms. Allocated memory is still 94.4 MB. Free memory was 65.4 MB in the beginning and 49.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,913 INFO L168 Benchmark]: Boogie Preprocessor took 116.50 ms. Allocated memory is still 94.4 MB. Free memory was 49.4 MB in the beginning and 46.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,914 INFO L168 Benchmark]: RCFGBuilder took 754.63 ms. Allocated memory is still 94.4 MB. Free memory was 46.7 MB in the beginning and 60.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,915 INFO L168 Benchmark]: TraceAbstraction took 2005.25 ms. Allocated memory is still 94.4 MB. Free memory was 60.2 MB in the beginning and 50.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,915 INFO L168 Benchmark]: Witness Printer took 3.60 ms. Allocated memory is still 94.4 MB. Free memory was 50.8 MB in the beginning and 50.2 MB in the end (delta: 577.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:48,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 77.6 MB. Free memory was 44.0 MB in the beginning and 44.0 MB in the end (delta: 34.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.47 ms. Allocated memory is still 94.4 MB. Free memory was 65.4 MB in the beginning and 49.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 116.50 ms. Allocated memory is still 94.4 MB. Free memory was 49.4 MB in the beginning and 46.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 754.63 ms. Allocated memory is still 94.4 MB. Free memory was 46.7 MB in the beginning and 60.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2005.25 ms. Allocated memory is still 94.4 MB. Free memory was 60.2 MB in the beginning and 50.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.60 ms. Allocated memory is still 94.4 MB. Free memory was 50.8 MB in the beginning and 50.2 MB in the end (delta: 577.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0] [L536] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 81 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 275 SDslu, 173 SDs, 0 SdLazy, 433 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:08:48,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/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-b2eff8b [2021-10-28 23:08:51,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:08:51,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:08:51,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:08:51,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:08:51,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:08:51,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:08:51,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:08:51,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:08:51,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:08:51,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:08:51,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:08:51,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:08:51,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:08:51,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:08:51,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:08:51,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:08:51,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:08:51,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:08:51,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:08:51,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:08:51,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:08:51,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:08:51,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:08:51,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:08:51,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:08:51,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:08:51,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:08:51,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:08:51,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:08:51,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:08:51,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:08:51,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:08:51,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:08:51,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:08:51,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:08:51,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:08:51,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:08:51,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:08:51,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:08:51,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:08:51,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:08:51,555 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:08:51,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:08:51,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:08:51,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:08:51,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:08:51,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:08:51,558 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:08:51,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:08:51,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:08:51,559 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:08:51,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:08:51,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:08:51,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:08:51,560 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:08:51,560 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:08:51,561 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:08:51,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:08:51,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:08:51,561 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:08:51,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:08:51,562 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:08:51,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:08:51,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:08:51,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:08:51,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:08:51,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:08:51,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:08:51,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:08:51,563 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:08:51,563 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:08:51,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:08:51,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:08:51,564 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_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da [2021-10-28 23:08:51,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:08:51,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:08:51,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:08:52,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:08:52,010 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:08:52,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-28 23:08:52,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data/7e6aee692/4c3733580e8c4d97b651858c9cc2f97f/FLAG201887c3a [2021-10-28 23:08:52,732 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:08:52,738 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-28 23:08:52,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data/7e6aee692/4c3733580e8c4d97b651858c9cc2f97f/FLAG201887c3a [2021-10-28 23:08:52,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/data/7e6aee692/4c3733580e8c4d97b651858c9cc2f97f [2021-10-28 23:08:53,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:08:53,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:08:53,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:53,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:08:53,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:08:53,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:52" (1/1) ... [2021-10-28 23:08:53,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c34564b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53, skipping insertion in model container [2021-10-28 23:08:53,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:52" (1/1) ... [2021-10-28 23:08:53,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:08:53,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:08:53,588 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-28 23:08:53,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:53,624 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:08:53,705 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-28 23:08:53,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:53,759 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:08:53,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53 WrapperNode [2021-10-28 23:08:53,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:53,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:08:53,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:08:53,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:08:53,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53" (1/1) ... [2021-10-28 23:08:53,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53" (1/1) ... [2021-10-28 23:08:53,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53" (1/1) ... [2021-10-28 23:08:53,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53" (1/1) ... [2021-10-28 23:08:53,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53" (1/1) ... [2021-10-28 23:08:53,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53" (1/1) ... [2021-10-28 23:08:53,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53" (1/1) ... [2021-10-28 23:08:53,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:08:53,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:08:53,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:08:53,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:08:53,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53" (1/1) ... [2021-10-28 23:08:53,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:08:53,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:53,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:08:53,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:08:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:08:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:08:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:08:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:08:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:08:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:08:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:08:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:08:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:08:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 23:08:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:08:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:08:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:08:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:08:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:08:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:08:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:08:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:08:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:08:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:08:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:08:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:08:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:08:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:08:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:08:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:08:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:08:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:08:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:08:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:08:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:08:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:08:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:08:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:08:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:08:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:08:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:08:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:08:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:08:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:08:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:08:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:08:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:08:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:08:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:08:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:08:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:08:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:08:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:08:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:08:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:08:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:08:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:08:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:08:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:08:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:08:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:08:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:08:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:08:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:08:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:08:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:08:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:08:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:08:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:08:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:08:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:08:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:08:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:08:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:08:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:08:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:08:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:08:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:08:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:08:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:08:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:08:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:08:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:08:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:08:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:08:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:08:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:08:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:08:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:08:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:08:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:08:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:08:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:08:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:08:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:08:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:08:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:08:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:08:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:08:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:08:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:08:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:08:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:08:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:08:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:08:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:08:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:08:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:08:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:08:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:08:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:08:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:08:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:08:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:08:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:08:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:08:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:08:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:08:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:08:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:08:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:08:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:08:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 23:08:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:08:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:08:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:08:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:08:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:08:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:08:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:08:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:08:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:08:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:08:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:08:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:08:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:08:54,437 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 23:08:54,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:08:54,728 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 23:08:54,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:54 BoogieIcfgContainer [2021-10-28 23:08:54,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:08:54,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:08:54,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:08:54,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:08:54,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:08:52" (1/3) ... [2021-10-28 23:08:54,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50aa7562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:54, skipping insertion in model container [2021-10-28 23:08:54,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:53" (2/3) ... [2021-10-28 23:08:54,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50aa7562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:54, skipping insertion in model container [2021-10-28 23:08:54,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:54" (3/3) ... [2021-10-28 23:08:54,739 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-10-28 23:08:54,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:08:54,745 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-28 23:08:54,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:08:54,797 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:08:54,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-28 23:08:54,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:08:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:08:54,820 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:54,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:54,821 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:08:54,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1040661460, now seen corresponding path program 1 times [2021-10-28 23:08:54,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:08:54,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151308552] [2021-10-28 23:08:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:54,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:08:54,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:08:54,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:08:54,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:08:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:55,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:08:55,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:08:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:55,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:08:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:55,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:08:55,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151308552] [2021-10-28 23:08:55,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151308552] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:55,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:55,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:08:55,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861721673] [2021-10-28 23:08:55,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:08:55,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:08:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:08:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:08:55,201 INFO L87 Difference]: Start difference. First operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:55,225 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-28 23:08:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:08:55,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:08:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:55,236 INFO L225 Difference]: With dead ends: 61 [2021-10-28 23:08:55,237 INFO L226 Difference]: Without dead ends: 54 [2021-10-28 23:08:55,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:08:55,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-28 23:08:55,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-28 23:08:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 29 states have (on average 1.896551724137931) internal successors, (55), 50 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-28 23:08:55,285 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2021-10-28 23:08:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:55,285 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-28 23:08:55,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-28 23:08:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:08:55,288 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:55,288 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:55,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:55,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:08:55,512 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:08:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1040662421, now seen corresponding path program 1 times [2021-10-28 23:08:55,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:08:55,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311195071] [2021-10-28 23:08:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:55,514 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:08:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:08:55,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:08:55,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:08:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:55,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:08:55,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:08:55,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:08:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:55,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:08:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:55,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:08:55,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311195071] [2021-10-28 23:08:55,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311195071] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:55,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:55,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 23:08:55,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668793894] [2021-10-28 23:08:55,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:08:55,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:08:55,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:08:55,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:08:55,838 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:56,133 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-28 23:08:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:08:56,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:08:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:56,137 INFO L225 Difference]: With dead ends: 61 [2021-10-28 23:08:56,138 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 23:08:56,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:08:56,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 23:08:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-10-28 23:08:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 52 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-10-28 23:08:56,162 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 10 [2021-10-28 23:08:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:56,168 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-10-28 23:08:56,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-10-28 23:08:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:08:56,169 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:56,170 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:56,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:56,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:08:56,382 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:08:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:56,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1040662420, now seen corresponding path program 1 times [2021-10-28 23:08:56,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:08:56,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499100456] [2021-10-28 23:08:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:56,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:08:56,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:08:56,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:08:56,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:08:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:56,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:08:56,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:08:56,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:08:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:56,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:08:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:56,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:08:56,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499100456] [2021-10-28 23:08:56,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499100456] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:56,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:56,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 23:08:56,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19760782] [2021-10-28 23:08:56,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:08:56,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:08:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:08:56,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:08:56,804 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:57,250 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2021-10-28 23:08:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:08:57,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:08:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:57,253 INFO L225 Difference]: With dead ends: 73 [2021-10-28 23:08:57,253 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 23:08:57,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:08:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 23:08:57,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2021-10-28 23:08:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 59 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-10-28 23:08:57,262 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2021-10-28 23:08:57,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:57,262 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-10-28 23:08:57,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:08:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-10-28 23:08:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:08:57,264 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:57,264 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:57,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:57,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:08:57,478 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:08:57,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:57,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1562517626, now seen corresponding path program 1 times [2021-10-28 23:08:57,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:08:57,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592152291] [2021-10-28 23:08:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:57,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:08:57,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:08:57,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:08:57,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:08:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:57,661 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:57,763 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:08:57,763 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:08:57,764 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:57,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:08:57,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:08:57,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:08:57,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:08:57,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:08:57,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:08:57,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:08:57,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:08:57,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:08:57,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:08:57,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:08:57,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:08:57,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:08:57,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:08:57,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:08:57,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:08:57,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:08:57,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:08:57,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:08:57,785 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:08:57,785 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:57,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:57,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:08:57,988 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 23:08:57,991 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:08:57,999 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:08:58,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:08:58 BoogieIcfgContainer [2021-10-28 23:08:58,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:08:58,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:08:58,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:08:58,012 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:08:58,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:54" (3/4) ... [2021-10-28 23:08:58,016 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:08:58,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:08:58,018 INFO L168 Benchmark]: Toolchain (without parser) took 5013.78 ms. Allocated memory was 75.5 MB in the beginning and 109.1 MB in the end (delta: 33.6 MB). Free memory was 51.6 MB in the beginning and 82.5 MB in the end (delta: -30.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:58,018 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.3 MB in the end (delta: 42.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:58,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.77 ms. Allocated memory is still 75.5 MB. Free memory was 51.5 MB in the beginning and 49.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:58,020 INFO L168 Benchmark]: Boogie Preprocessor took 140.38 ms. Allocated memory is still 75.5 MB. Free memory was 49.7 MB in the beginning and 46.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:58,020 INFO L168 Benchmark]: RCFGBuilder took 827.18 ms. Allocated memory is still 75.5 MB. Free memory was 46.6 MB in the beginning and 45.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:58,021 INFO L168 Benchmark]: TraceAbstraction took 3278.72 ms. Allocated memory was 75.5 MB in the beginning and 109.1 MB in the end (delta: 33.6 MB). Free memory was 44.9 MB in the beginning and 82.5 MB in the end (delta: -37.6 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:58,021 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 109.1 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:58,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.3 MB in the end (delta: 42.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 756.77 ms. Allocated memory is still 75.5 MB. Free memory was 51.5 MB in the beginning and 49.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 140.38 ms. Allocated memory is still 75.5 MB. Free memory was 49.7 MB in the beginning and 46.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 827.18 ms. Allocated memory is still 75.5 MB. Free memory was 46.6 MB in the beginning and 45.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3278.72 ms. Allocated memory was 75.5 MB in the beginning and 109.1 MB in the end (delta: 33.6 MB). Free memory was 44.9 MB in the beginning and 82.5 MB in the end (delta: -37.6 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.62 ms. Allocated memory is still 109.1 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648] [L536] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={1:0}, flag=2147483648, p={1:0}] [L549] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L550] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, p={1:0}] [L551] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L551] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 86 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 222 SDslu, 37 SDs, 0 SdLazy, 103 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 206 SizeOfPredicates, 3 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:08:58,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b421d3-7503-49c1-a6c2-fd12bbf60e07/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...