./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b33005346e6b80bc2289c235b2b7a5c7f83b2de ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b33005346e6b80bc2289c235b2b7a5c7f83b2de ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:06:42,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:06:42,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:06:42,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:06:42,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:06:42,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:06:42,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:06:42,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:06:42,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:06:42,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:06:42,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:06:42,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:06:42,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:06:42,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:06:42,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:06:42,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:06:42,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:06:42,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:06:42,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:06:42,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:06:42,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:06:42,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:06:42,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:06:42,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:06:42,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:06:42,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:06:42,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:06:42,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:06:42,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:06:42,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:06:42,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:06:42,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:06:42,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:06:42,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:06:42,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:06:42,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:06:42,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:06:42,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:06:42,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:06:42,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:06:42,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:06:42,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:06:42,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:06:42,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:06:42,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:06:42,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:06:42,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:06:42,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:06:42,789 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:06:42,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:06:42,790 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:06:42,790 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:06:42,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:06:42,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:06:42,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:06:42,792 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:06:42,793 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:06:42,793 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:06:42,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:06:42,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:06:42,794 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:06:42,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:06:42,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:06:42,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:06:42,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:06:42,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:06:42,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:06:42,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:06:42,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:06:42,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:06:42,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:06:42,797 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_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b33005346e6b80bc2289c235b2b7a5c7f83b2de [2021-10-13 00:06:43,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:06:43,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:06:43,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:06:43,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:06:43,202 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:06:43,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-13 00:06:43,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data/24ef1052e/dea151f66c8143889ae60714953ba836/FLAG82a2ed1fe [2021-10-13 00:06:43,887 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:06:43,888 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-13 00:06:43,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data/24ef1052e/dea151f66c8143889ae60714953ba836/FLAG82a2ed1fe [2021-10-13 00:06:44,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data/24ef1052e/dea151f66c8143889ae60714953ba836 [2021-10-13 00:06:44,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:06:44,165 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:06:44,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:06:44,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:06:44,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:06:44,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:44,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a61f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44, skipping insertion in model container [2021-10-13 00:06:44,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:44,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:06:44,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:06:44,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:06:44,800 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:06:44,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:06:44,912 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:06:44,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44 WrapperNode [2021-10-13 00:06:44,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:06:44,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:06:44,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:06:44,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:06:44,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:44,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:44,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:44,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:44,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:44,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:44,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:45,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:06:45,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:06:45,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:06:45,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:06:45,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44" (1/1) ... [2021-10-13 00:06:45,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:06:45,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:45,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:06:45,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:06:45,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:06:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:06:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-13 00:06:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:06:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:06:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-13 00:06:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-13 00:06:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-13 00:06:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:06:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:06:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:06:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:06:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:06:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:06:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:06:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:06:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:06:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:06:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:06:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:06:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:06:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:06:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:06:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:06:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:06:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:06:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:06:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:06:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:06:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:06:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:06:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:06:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:06:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:06:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:06:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:06:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:06:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:06:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:06:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:06:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:06:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:06:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:06:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:06:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:06:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:06:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:06:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:06:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:06:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:06:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:06:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:06:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:06:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:06:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:06:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:06:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:06:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:06:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:06:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:06:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:06:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:06:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:06:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:06:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:06:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-13 00:06:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:06:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:06:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:06:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:06:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:06:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:06:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:06:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:06:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:06:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:06:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:06:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:06:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:06:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:06:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:06:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:06:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:06:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:06:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:06:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:06:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:06:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:06:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:06:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:06:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:06:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:06:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:06:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:06:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:06:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:06:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:06:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:06:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:06:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:06:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:06:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:06:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:06:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:06:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:06:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:06:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:06:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:06:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:06:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:06:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:06:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:06:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:06:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:06:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 00:06:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-13 00:06:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-13 00:06:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 00:06:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-13 00:06:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-13 00:06:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-13 00:06:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-13 00:06:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-13 00:06:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-13 00:06:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-13 00:06:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-13 00:06:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-13 00:06:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-13 00:06:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-13 00:06:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-13 00:06:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-13 00:06:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-13 00:06:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-13 00:06:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-13 00:06:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-13 00:06:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-13 00:06:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-13 00:06:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-13 00:06:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-13 00:06:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-13 00:06:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-13 00:06:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-13 00:06:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-13 00:06:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-13 00:06:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-13 00:06:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-13 00:06:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-13 00:06:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-13 00:06:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-13 00:06:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-13 00:06:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-13 00:06:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-13 00:06:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-13 00:06:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-13 00:06:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-13 00:06:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-13 00:06:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-13 00:06:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-13 00:06:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-13 00:06:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-13 00:06:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-13 00:06:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-13 00:06:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-13 00:06:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:06:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-13 00:06:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-13 00:06:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:06:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:06:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:06:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:06:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:06:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:06:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:06:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 00:06:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:06:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:06:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:06:45,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:06:45,802 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-13 00:06:45,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:06:45 BoogieIcfgContainer [2021-10-13 00:06:45,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:06:45,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:06:45,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:06:45,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:06:45,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:06:44" (1/3) ... [2021-10-13 00:06:45,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6f7390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:06:45, skipping insertion in model container [2021-10-13 00:06:45,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:44" (2/3) ... [2021-10-13 00:06:45,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6f7390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:06:45, skipping insertion in model container [2021-10-13 00:06:45,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:06:45" (3/3) ... [2021-10-13 00:06:45,822 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-13 00:06:45,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:06:45,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-13 00:06:45,879 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:06:45,887 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:06:45,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-13 00:06:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-13 00:06:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:06:45,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:45,937 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:45,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:06:45,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:45,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1891287210, now seen corresponding path program 1 times [2021-10-13 00:06:45,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:45,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660339327] [2021-10-13 00:06:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:45,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:06:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:46,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:46,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660339327] [2021-10-13 00:06:46,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660339327] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:06:46,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:06:46,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:06:46,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663400465] [2021-10-13 00:06:46,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:06:46,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:06:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:06:46,468 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:47,140 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-10-13 00:06:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:06:47,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-13 00:06:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:47,155 INFO L225 Difference]: With dead ends: 106 [2021-10-13 00:06:47,156 INFO L226 Difference]: Without dead ends: 97 [2021-10-13 00:06:47,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 163.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:06:47,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-13 00:06:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2021-10-13 00:06:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 50 states have (on average 1.58) internal successors, (79), 73 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2021-10-13 00:06:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2021-10-13 00:06:47,217 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 9 [2021-10-13 00:06:47,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:47,218 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2021-10-13 00:06:47,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2021-10-13 00:06:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:06:47,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:47,220 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:47,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:06:47,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:06:47,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:47,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1891287209, now seen corresponding path program 1 times [2021-10-13 00:06:47,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:47,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418619142] [2021-10-13 00:06:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:47,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:06:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:47,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:47,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418619142] [2021-10-13 00:06:47,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418619142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:06:47,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:06:47,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:06:47,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850872631] [2021-10-13 00:06:47,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:06:47,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:06:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:06:47,485 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:48,207 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2021-10-13 00:06:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:06:48,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-13 00:06:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:48,222 INFO L225 Difference]: With dead ends: 175 [2021-10-13 00:06:48,225 INFO L226 Difference]: Without dead ends: 175 [2021-10-13 00:06:48,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 213.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:06:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-13 00:06:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2021-10-13 00:06:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 115 states have internal predecessors, (149), 17 states have call successors, (17), 11 states have call predecessors, (17), 14 states have return successors, (47), 17 states have call predecessors, (47), 16 states have call successors, (47) [2021-10-13 00:06:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 213 transitions. [2021-10-13 00:06:48,282 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 213 transitions. Word has length 9 [2021-10-13 00:06:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:48,283 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 213 transitions. [2021-10-13 00:06:48,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 213 transitions. [2021-10-13 00:06:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:06:48,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:48,284 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:48,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:06:48,285 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:06:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:48,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1499638660, now seen corresponding path program 1 times [2021-10-13 00:06:48,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:48,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016295386] [2021-10-13 00:06:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:48,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:48,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:06:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:48,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:48,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016295386] [2021-10-13 00:06:48,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016295386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:06:48,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:06:48,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:06:48,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124853417] [2021-10-13 00:06:48,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:06:48,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:06:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:06:48,787 INFO L87 Difference]: Start difference. First operand 144 states and 213 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:49,719 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-10-13 00:06:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:06:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-13 00:06:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:49,730 INFO L225 Difference]: With dead ends: 262 [2021-10-13 00:06:49,730 INFO L226 Difference]: Without dead ends: 262 [2021-10-13 00:06:49,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 359.7ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:06:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-13 00:06:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-10-13 00:06:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6170212765957446) internal successors, (228), 165 states have internal predecessors, (228), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-10-13 00:06:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 306 transitions. [2021-10-13 00:06:49,787 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 306 transitions. Word has length 10 [2021-10-13 00:06:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:49,788 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 306 transitions. [2021-10-13 00:06:49,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 306 transitions. [2021-10-13 00:06:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:06:49,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:49,789 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:49,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:06:49,790 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:06:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:49,791 INFO L82 PathProgramCache]: Analyzing trace with hash -755841706, now seen corresponding path program 1 times [2021-10-13 00:06:49,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:49,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824661287] [2021-10-13 00:06:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:49,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:06:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:50,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:50,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824661287] [2021-10-13 00:06:50,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824661287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:06:50,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:06:50,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:06:50,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197653390] [2021-10-13 00:06:50,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:06:50,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:50,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:06:50,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:06:50,167 INFO L87 Difference]: Start difference. First operand 202 states and 306 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:51,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:51,158 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2021-10-13 00:06:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:06:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-13 00:06:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:51,162 INFO L225 Difference]: With dead ends: 236 [2021-10-13 00:06:51,162 INFO L226 Difference]: Without dead ends: 236 [2021-10-13 00:06:51,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 472.9ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:06:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-13 00:06:51,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 202. [2021-10-13 00:06:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6028368794326242) internal successors, (226), 165 states have internal predecessors, (226), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-10-13 00:06:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-10-13 00:06:51,186 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 11 [2021-10-13 00:06:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:51,187 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-10-13 00:06:51,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2021-10-13 00:06:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:06:51,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:51,188 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:51,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:06:51,189 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:06:51,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:51,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1956256314, now seen corresponding path program 1 times [2021-10-13 00:06:51,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:51,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543121102] [2021-10-13 00:06:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:51,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:51,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:06:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:51,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:51,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543121102] [2021-10-13 00:06:51,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543121102] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:06:51,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:06:51,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:06:51,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976581071] [2021-10-13 00:06:51,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:06:51,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:51,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:06:51,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:06:51,374 INFO L87 Difference]: Start difference. First operand 202 states and 304 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:52,240 INFO L93 Difference]: Finished difference Result 287 states and 397 transitions. [2021-10-13 00:06:52,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:06:52,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-13 00:06:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:52,245 INFO L225 Difference]: With dead ends: 287 [2021-10-13 00:06:52,245 INFO L226 Difference]: Without dead ends: 287 [2021-10-13 00:06:52,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 395.3ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:06:52,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-13 00:06:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 233. [2021-10-13 00:06:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 195 states have internal predecessors, (269), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-13 00:06:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2021-10-13 00:06:52,279 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 12 [2021-10-13 00:06:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:52,280 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2021-10-13 00:06:52,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:52,280 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2021-10-13 00:06:52,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:06:52,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:52,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:52,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:06:52,282 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:06:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:52,282 INFO L82 PathProgramCache]: Analyzing trace with hash -514403496, now seen corresponding path program 1 times [2021-10-13 00:06:52,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:52,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717697893] [2021-10-13 00:06:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:52,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:52,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:06:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:52,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:52,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717697893] [2021-10-13 00:06:52,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717697893] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:06:52,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:06:52,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:06:52,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750955666] [2021-10-13 00:06:52,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:06:52,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:52,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:06:52,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:06:52,557 INFO L87 Difference]: Start difference. First operand 233 states and 348 transitions. Second operand has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:53,323 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2021-10-13 00:06:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:06:53,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-13 00:06:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:53,328 INFO L225 Difference]: With dead ends: 265 [2021-10-13 00:06:53,328 INFO L226 Difference]: Without dead ends: 265 [2021-10-13 00:06:53,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 353.7ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:06:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-13 00:06:53,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 233. [2021-10-13 00:06:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5705882352941176) internal successors, (267), 195 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-13 00:06:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2021-10-13 00:06:53,345 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 13 [2021-10-13 00:06:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:53,345 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2021-10-13 00:06:53,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2021-10-13 00:06:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:06:53,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:53,347 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:53,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:06:53,347 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:06:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:53,348 INFO L82 PathProgramCache]: Analyzing trace with hash -389968098, now seen corresponding path program 1 times [2021-10-13 00:06:53,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:53,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686102563] [2021-10-13 00:06:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:53,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:06:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:53,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:53,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686102563] [2021-10-13 00:06:53,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686102563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:53,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139993841] [2021-10-13 00:06:53,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:53,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:53,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:53,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:53,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:06:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:06:53,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:53,971 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-13 00:06:53,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-13 00:06:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:54,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139993841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:54,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:54,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-13 00:06:54,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221394683] [2021-10-13 00:06:54,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:06:54,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:54,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:06:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:06:54,297 INFO L87 Difference]: Start difference. First operand 233 states and 346 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:55,176 INFO L93 Difference]: Finished difference Result 267 states and 370 transitions. [2021-10-13 00:06:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:06:55,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-13 00:06:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:55,180 INFO L225 Difference]: With dead ends: 267 [2021-10-13 00:06:55,181 INFO L226 Difference]: Without dead ends: 267 [2021-10-13 00:06:55,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 330.0ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:06:55,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-13 00:06:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 237. [2021-10-13 00:06:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 174 states have (on average 1.5114942528735633) internal successors, (263), 199 states have internal predecessors, (263), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-13 00:06:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2021-10-13 00:06:55,197 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 17 [2021-10-13 00:06:55,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:55,198 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2021-10-13 00:06:55,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:06:55,198 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2021-10-13 00:06:55,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:06:55,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:55,199 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:55,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:55,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:55,433 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:06:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash 795890845, now seen corresponding path program 1 times [2021-10-13 00:06:55,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:55,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520954294] [2021-10-13 00:06:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:55,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:06:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:55,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:55,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520954294] [2021-10-13 00:06:55,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520954294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:55,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244260560] [2021-10-13 00:06:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:55,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:55,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:55,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:06:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:55,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:06:55,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:56,182 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-10-13 00:06:56,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 74 treesize of output 108 [2021-10-13 00:07:06,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 66 [2021-10-13 00:07:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:06,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244260560] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:06,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:06,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-13 00:07:06,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744140650] [2021-10-13 00:07:06,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:07:06,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:06,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:07:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:07:06,838 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:07:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:09,492 INFO L93 Difference]: Finished difference Result 294 states and 408 transitions. [2021-10-13 00:07:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:07:09,492 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-10-13 00:07:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:07:09,495 INFO L225 Difference]: With dead ends: 294 [2021-10-13 00:07:09,495 INFO L226 Difference]: Without dead ends: 294 [2021-10-13 00:07:09,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1046.0ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:07:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-13 00:07:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2021-10-13 00:07:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.5) internal successors, (270), 205 states have internal predecessors, (270), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-13 00:07:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 349 transitions. [2021-10-13 00:07:09,511 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 349 transitions. Word has length 18 [2021-10-13 00:07:09,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:07:09,511 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 349 transitions. [2021-10-13 00:07:09,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:07:09,512 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 349 transitions. [2021-10-13 00:07:09,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:07:09,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:07:09,513 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:09,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-13 00:07:09,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:09,729 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:07:09,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:09,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1097187491, now seen corresponding path program 1 times [2021-10-13 00:07:09,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:09,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270317957] [2021-10-13 00:07:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:09,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:10,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:07:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:10,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:10,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270317957] [2021-10-13 00:07:10,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270317957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:10,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907481706] [2021-10-13 00:07:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:10,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:10,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:10,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:07:10,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:07:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:10,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:07:10,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:10,606 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-10-13 00:07:10,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 83 [2021-10-13 00:07:10,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 164 [2021-10-13 00:07:13,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 62 [2021-10-13 00:07:13,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-10-13 00:07:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:14,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907481706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:14,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:14,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-13 00:07:14,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826319359] [2021-10-13 00:07:14,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:07:14,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:14,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:07:14,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:07:14,165 INFO L87 Difference]: Start difference. First operand 243 states and 349 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:07:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:15,566 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2021-10-13 00:07:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:07:15,568 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-13 00:07:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:07:15,570 INFO L225 Difference]: With dead ends: 272 [2021-10-13 00:07:15,571 INFO L226 Difference]: Without dead ends: 272 [2021-10-13 00:07:15,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 814.4ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:07:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-13 00:07:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2021-10-13 00:07:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 205 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-13 00:07:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 346 transitions. [2021-10-13 00:07:15,583 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 346 transitions. Word has length 19 [2021-10-13 00:07:15,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:07:15,584 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 346 transitions. [2021-10-13 00:07:15,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:07:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 346 transitions. [2021-10-13 00:07:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 00:07:15,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:07:15,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:15,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:15,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:15,801 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:07:15,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash -321978897, now seen corresponding path program 1 times [2021-10-13 00:07:15,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:15,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128555967] [2021-10-13 00:07:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:15,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:07:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:15,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:15,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128555967] [2021-10-13 00:07:15,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128555967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:15,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:15,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:07:15,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248514839] [2021-10-13 00:07:15,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:07:15,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:15,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:07:15,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:07:15,901 INFO L87 Difference]: Start difference. First operand 243 states and 346 transitions. Second operand has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:07:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:16,252 INFO L93 Difference]: Finished difference Result 352 states and 523 transitions. [2021-10-13 00:07:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:07:16,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-13 00:07:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:07:16,259 INFO L225 Difference]: With dead ends: 352 [2021-10-13 00:07:16,259 INFO L226 Difference]: Without dead ends: 352 [2021-10-13 00:07:16,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:07:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-13 00:07:16,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 338. [2021-10-13 00:07:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 254 states have (on average 1.5) internal successors, (381), 282 states have internal predecessors, (381), 30 states have call successors, (30), 25 states have call predecessors, (30), 33 states have return successors, (110), 30 states have call predecessors, (110), 29 states have call successors, (110) [2021-10-13 00:07:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 521 transitions. [2021-10-13 00:07:16,288 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 521 transitions. Word has length 23 [2021-10-13 00:07:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:07:16,289 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 521 transitions. [2021-10-13 00:07:16,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:07:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 521 transitions. [2021-10-13 00:07:16,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 00:07:16,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:07:16,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:16,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:07:16,294 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting c2Err3ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:07:16,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:16,295 INFO L82 PathProgramCache]: Analyzing trace with hash -321978673, now seen corresponding path program 1 times [2021-10-13 00:07:16,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:16,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008634584] [2021-10-13 00:07:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:16,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:07:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:16,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:16,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008634584] [2021-10-13 00:07:16,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008634584] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:16,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:16,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:07:16,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096473506] [2021-10-13 00:07:16,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:07:16,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:16,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:07:16,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:07:16,428 INFO L87 Difference]: Start difference. First operand 338 states and 521 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:07:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:16,763 INFO L93 Difference]: Finished difference Result 391 states and 559 transitions. [2021-10-13 00:07:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:07:16,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-13 00:07:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:07:16,767 INFO L225 Difference]: With dead ends: 391 [2021-10-13 00:07:16,768 INFO L226 Difference]: Without dead ends: 391 [2021-10-13 00:07:16,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:07:16,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-13 00:07:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2021-10-13 00:07:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4858156028368794) internal successors, (419), 311 states have internal predecessors, (419), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-10-13 00:07:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 553 transitions. [2021-10-13 00:07:16,785 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 553 transitions. Word has length 23 [2021-10-13 00:07:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:07:16,785 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 553 transitions. [2021-10-13 00:07:16,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:07:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 553 transitions. [2021-10-13 00:07:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:07:16,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:07:16,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:16,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 00:07:16,788 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting c2Err1ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:07:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:16,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1391411157, now seen corresponding path program 1 times [2021-10-13 00:07:16,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:16,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48941723] [2021-10-13 00:07:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:16,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:16,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:07:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:16,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:16,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48941723] [2021-10-13 00:07:16,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48941723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:16,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:16,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:07:16,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163143695] [2021-10-13 00:07:16,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:07:16,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:07:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:07:16,884 INFO L87 Difference]: Start difference. First operand 375 states and 553 transitions. Second operand has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:07:17,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:17,260 INFO L93 Difference]: Finished difference Result 390 states and 557 transitions. [2021-10-13 00:07:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:07:17,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-13 00:07:17,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:07:17,265 INFO L225 Difference]: With dead ends: 390 [2021-10-13 00:07:17,265 INFO L226 Difference]: Without dead ends: 390 [2021-10-13 00:07:17,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:07:17,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-13 00:07:17,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2021-10-13 00:07:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4787234042553192) internal successors, (417), 311 states have internal predecessors, (417), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-10-13 00:07:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 551 transitions. [2021-10-13 00:07:17,288 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 551 transitions. Word has length 24 [2021-10-13 00:07:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:07:17,289 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 551 transitions. [2021-10-13 00:07:17,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:07:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 551 transitions. [2021-10-13 00:07:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 00:07:17,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:07:17,294 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:17,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 00:07:17,295 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:07:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1350782223, now seen corresponding path program 1 times [2021-10-13 00:07:17,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:17,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693272132] [2021-10-13 00:07:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:17,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:17,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:07:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:07:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:07:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-13 00:07:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:17,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:17,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693272132] [2021-10-13 00:07:17,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693272132] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:17,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:17,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:07:17,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505386144] [2021-10-13 00:07:17,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:07:17,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:17,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:07:17,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:07:17,445 INFO L87 Difference]: Start difference. First operand 375 states and 551 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:07:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:17,686 INFO L93 Difference]: Finished difference Result 284 states and 399 transitions. [2021-10-13 00:07:17,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:07:17,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2021-10-13 00:07:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:07:17,690 INFO L225 Difference]: With dead ends: 284 [2021-10-13 00:07:17,690 INFO L226 Difference]: Without dead ends: 284 [2021-10-13 00:07:17,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:07:17,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-13 00:07:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-10-13 00:07:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 213 states have (on average 1.4507042253521127) internal successors, (309), 238 states have internal predecessors, (309), 26 states have call successors, (26), 23 states have call predecessors, (26), 24 states have return successors, (64), 22 states have call predecessors, (64), 25 states have call successors, (64) [2021-10-13 00:07:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 399 transitions. [2021-10-13 00:07:17,707 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 399 transitions. Word has length 33 [2021-10-13 00:07:17,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:07:17,708 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 399 transitions. [2021-10-13 00:07:17,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:07:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 399 transitions. [2021-10-13 00:07:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 00:07:17,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:07:17,710 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:17,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 00:07:17,711 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:07:17,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:17,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1784623764, now seen corresponding path program 1 times [2021-10-13 00:07:17,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:17,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296078490] [2021-10-13 00:07:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:17,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:07:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:07:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 00:07:17,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:17,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296078490] [2021-10-13 00:07:17,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296078490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:17,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845119881] [2021-10-13 00:07:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:17,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:17,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:17,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:07:17,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:07:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:18,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:07:18,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:18,459 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-13 00:07:18,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-13 00:07:20,216 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-10-13 00:07:20,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 55 treesize of output 89 [2021-10-13 00:07:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 00:07:23,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845119881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:23,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:23,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-13 00:07:23,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523720852] [2021-10-13 00:07:23,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:07:23,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:23,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:07:23,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:07:23,031 INFO L87 Difference]: Start difference. First operand 284 states and 399 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 00:07:35,226 WARN L207 SmtUtils]: Spent 10.88 s on a formula simplification that was a NOOP. DAG size: 97 [2021-10-13 00:07:54,447 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-13 00:07:54,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-13 00:07:54,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:54,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:07:54,650 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-13 00:07:54,653 INFO L168 Benchmark]: Toolchain (without parser) took 70488.10 ms. Allocated memory was 86.0 MB in the beginning and 232.8 MB in the end (delta: 146.8 MB). Free memory was 66.2 MB in the beginning and 81.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 131.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:54,654 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:07:54,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.14 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 65.9 MB in the beginning and 74.7 MB in the end (delta: -8.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:54,655 INFO L168 Benchmark]: Boogie Preprocessor took 85.35 ms. Allocated memory is still 109.1 MB. Free memory was 74.7 MB in the beginning and 71.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:54,655 INFO L168 Benchmark]: RCFGBuilder took 803.68 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 45.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:54,655 INFO L168 Benchmark]: TraceAbstraction took 68845.95 ms. Allocated memory was 109.1 MB in the beginning and 232.8 MB in the end (delta: 123.7 MB). Free memory was 44.8 MB in the beginning and 81.4 MB in the end (delta: -36.6 MB). Peak memory consumption was 88.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:54,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 743.14 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 65.9 MB in the beginning and 74.7 MB in the end (delta: -8.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.35 ms. Allocated memory is still 109.1 MB. Free memory was 74.7 MB in the beginning and 71.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 803.68 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 45.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 68845.95 ms. Allocated memory was 109.1 MB in the beginning and 232.8 MB in the end (delta: 123.7 MB). Free memory was 44.8 MB in the beginning and 81.4 MB in the end (delta: -36.6 MB). Peak memory consumption was 88.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:07:57,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:07:57,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:07:57,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 00:07:57,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:07:57,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:07:57,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:07:57,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:07:57,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:07:57,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:07:57,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:07:57,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:07:57,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:07:57,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:07:57,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:07:57,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:07:57,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:07:57,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:07:57,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:07:57,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:07:57,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:07:57,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:07:57,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:07:57,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:07:57,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:07:57,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:07:57,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:07:57,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:07:57,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:07:57,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:07:57,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:07:57,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:07:57,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:07:57,338 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:07:57,387 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:07:57,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:07:57,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:07:57,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:07:57,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:07:57,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:07:57,390 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:07:57,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:07:57,391 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:07:57,391 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:07:57,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:07:57,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:07:57,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:07:57,391 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:07:57,392 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:07:57,392 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:07:57,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:07:57,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:07:57,392 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:07:57,392 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:07:57,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:07:57,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:07:57,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:07:57,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:07:57,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:07:57,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:07:57,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:07:57,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:07:57,394 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:07:57,395 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:07:57,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:07:57,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:07:57,395 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_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b33005346e6b80bc2289c235b2b7a5c7f83b2de [2021-10-13 00:07:57,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:07:57,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:07:57,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:07:57,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:07:57,927 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:07:57,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-13 00:07:58,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data/f59cbe7d3/ec9ae9d105d54a978a510216e0bb71b9/FLAG9ac62d18c [2021-10-13 00:07:58,716 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:07:58,717 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-13 00:07:58,736 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data/f59cbe7d3/ec9ae9d105d54a978a510216e0bb71b9/FLAG9ac62d18c [2021-10-13 00:07:58,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/data/f59cbe7d3/ec9ae9d105d54a978a510216e0bb71b9 [2021-10-13 00:07:58,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:07:58,948 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:07:58,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:07:58,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:07:58,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:07:58,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:07:58" (1/1) ... [2021-10-13 00:07:58,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508affc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:58, skipping insertion in model container [2021-10-13 00:07:58,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:07:58" (1/1) ... [2021-10-13 00:07:58,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:07:59,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:07:59,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:07:59,637 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:07:59,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:07:59,796 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:07:59,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59 WrapperNode [2021-10-13 00:07:59,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:07:59,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:07:59,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:07:59,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:07:59,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59" (1/1) ... [2021-10-13 00:07:59,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59" (1/1) ... [2021-10-13 00:07:59,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59" (1/1) ... [2021-10-13 00:07:59,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59" (1/1) ... [2021-10-13 00:07:59,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59" (1/1) ... [2021-10-13 00:07:59,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59" (1/1) ... [2021-10-13 00:07:59,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59" (1/1) ... [2021-10-13 00:07:59,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:07:59,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:07:59,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:07:59,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:07:59,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59" (1/1) ... [2021-10-13 00:07:59,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:07:59,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:59,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:08:00,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:08:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:08:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:08:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-13 00:08:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:08:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:08:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:08:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-13 00:08:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-13 00:08:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-13 00:08:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:08:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:08:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:08:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:08:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:08:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:08:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:08:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:08:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:08:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:08:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:08:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:08:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:08:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:08:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:08:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:08:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:08:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:08:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:08:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:08:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:08:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:08:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:08:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:08:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:08:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:08:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:08:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:08:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:08:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:08:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:08:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:08:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:08:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:08:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:08:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:08:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:08:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:08:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:08:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:08:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:08:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:08:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:08:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:08:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:08:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:08:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:08:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:08:00,051 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:08:00,051 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:08:00,051 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:08:00,052 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:08:00,052 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:08:00,052 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:08:00,052 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:08:00,053 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:08:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:08:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-13 00:08:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:08:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:08:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:08:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:08:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:08:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:08:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:08:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:08:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:08:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:08:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:08:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:08:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:08:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:08:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:08:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:08:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:08:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:08:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:08:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:08:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:08:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:08:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:08:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:08:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:08:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:08:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:08:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:08:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:08:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:08:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:08:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:08:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:08:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:08:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:08:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:08:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:08:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:08:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:08:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:08:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:08:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:08:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:08:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:08:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:08:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:08:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:08:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:08:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 00:08:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-13 00:08:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-13 00:08:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 00:08:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-13 00:08:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-13 00:08:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-13 00:08:00,068 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-13 00:08:00,068 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-13 00:08:00,068 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-13 00:08:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-13 00:08:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-13 00:08:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-13 00:08:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-13 00:08:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-13 00:08:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-13 00:08:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-13 00:08:00,076 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-13 00:08:00,076 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-13 00:08:00,076 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-13 00:08:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-13 00:08:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-13 00:08:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-13 00:08:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-13 00:08:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-13 00:08:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-13 00:08:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-13 00:08:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-13 00:08:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-13 00:08:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-13 00:08:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-13 00:08:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-13 00:08:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-13 00:08:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-13 00:08:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-13 00:08:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-13 00:08:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-13 00:08:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-13 00:08:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-13 00:08:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-13 00:08:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-13 00:08:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-13 00:08:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-13 00:08:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-13 00:08:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-13 00:08:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-13 00:08:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-13 00:08:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-13 00:08:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-13 00:08:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:08:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-13 00:08:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-13 00:08:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:08:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 00:08:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:08:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:08:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:08:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:08:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:08:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 00:08:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:08:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:08:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:08:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 00:08:01,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:08:01,051 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-13 00:08:01,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:08:01 BoogieIcfgContainer [2021-10-13 00:08:01,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:08:01,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:08:01,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:08:01,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:08:01,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:07:58" (1/3) ... [2021-10-13 00:08:01,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bea030a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:08:01, skipping insertion in model container [2021-10-13 00:08:01,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:59" (2/3) ... [2021-10-13 00:08:01,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bea030a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:08:01, skipping insertion in model container [2021-10-13 00:08:01,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:08:01" (3/3) ... [2021-10-13 00:08:01,063 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-13 00:08:01,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:08:01,069 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-13 00:08:01,139 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:08:01,151 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:08:01,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-13 00:08:01,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-13 00:08:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:08:01,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:08:01,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:08:01,194 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:08:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:08:01,201 INFO L82 PathProgramCache]: Analyzing trace with hash -317410196, now seen corresponding path program 1 times [2021-10-13 00:08:01,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:08:01,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938378775] [2021-10-13 00:08:01,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:08:01,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:08:01,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:08:01,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:08:01,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:08:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:08:01,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:08:01,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:08:01,955 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-13 00:08:01,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 69 [2021-10-13 00:08:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:02,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:08:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:03,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:08:03,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938378775] [2021-10-13 00:08:03,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938378775] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:08:03,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:08:03,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:08:03,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488376876] [2021-10-13 00:08:03,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:08:03,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:08:03,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:08:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:08:03,087 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:08:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:08:03,270 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2021-10-13 00:08:03,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:08:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-13 00:08:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:08:03,286 INFO L225 Difference]: With dead ends: 97 [2021-10-13 00:08:03,286 INFO L226 Difference]: Without dead ends: 91 [2021-10-13 00:08:03,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:08:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-13 00:08:03,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-10-13 00:08:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 69 states have internal predecessors, (77), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2021-10-13 00:08:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-10-13 00:08:03,336 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 9 [2021-10-13 00:08:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:08:03,336 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-10-13 00:08:03,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:08:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-10-13 00:08:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:08:03,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:08:03,338 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:08:03,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:08:03,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:08:03,551 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:08:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:08:03,552 INFO L82 PathProgramCache]: Analyzing trace with hash -317410195, now seen corresponding path program 1 times [2021-10-13 00:08:03,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:08:03,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943438410] [2021-10-13 00:08:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:08:03,553 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:08:03,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:08:03,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:08:03,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:08:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:08:03,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:08:03,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:08:03,988 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-13 00:08:03,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-13 00:08:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:04,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:08:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:04,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:08:04,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943438410] [2021-10-13 00:08:04,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943438410] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:08:04,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:08:04,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 00:08:04,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035457424] [2021-10-13 00:08:04,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:08:04,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:08:04,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:08:04,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:08:04,530 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:08:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:08:05,171 INFO L93 Difference]: Finished difference Result 174 states and 228 transitions. [2021-10-13 00:08:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:08:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 9 [2021-10-13 00:08:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:08:05,175 INFO L225 Difference]: With dead ends: 174 [2021-10-13 00:08:05,175 INFO L226 Difference]: Without dead ends: 174 [2021-10-13 00:08:05,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 200.6ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:08:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-13 00:08:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-10-13 00:08:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 93 states have (on average 1.6236559139784945) internal successors, (151), 114 states have internal predecessors, (151), 16 states have call successors, (16), 11 states have call predecessors, (16), 12 states have return successors, (38), 16 states have call predecessors, (38), 15 states have call successors, (38) [2021-10-13 00:08:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2021-10-13 00:08:05,207 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 9 [2021-10-13 00:08:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:08:05,208 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2021-10-13 00:08:05,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:08:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2021-10-13 00:08:05,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:08:05,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:08:05,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:08:05,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:08:05,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:08:05,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:08:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:08:05,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1249781436, now seen corresponding path program 1 times [2021-10-13 00:08:05,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:08:05,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947430125] [2021-10-13 00:08:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:08:05,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:08:05,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:08:05,426 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:08:05,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:08:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:08:05,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:08:05,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:08:06,079 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-10-13 00:08:06,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 234 treesize of output 278 [2021-10-13 00:08:12,466 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-10-13 00:08:12,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 118 [2021-10-13 00:08:21,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 105 [2021-10-13 00:08:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:23,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:08:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:23,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:08:23,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947430125] [2021-10-13 00:08:23,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947430125] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:08:23,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:08:23,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-13 00:08:23,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776940656] [2021-10-13 00:08:23,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:08:23,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:08:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:08:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:08:23,852 INFO L87 Difference]: Start difference. First operand 142 states and 205 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:08:25,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:08:25,835 INFO L93 Difference]: Finished difference Result 261 states and 376 transitions. [2021-10-13 00:08:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:08:25,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2021-10-13 00:08:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:08:25,842 INFO L225 Difference]: With dead ends: 261 [2021-10-13 00:08:25,842 INFO L226 Difference]: Without dead ends: 261 [2021-10-13 00:08:25,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1188.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:08:25,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-13 00:08:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 202. [2021-10-13 00:08:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 144 states have (on average 1.6180555555555556) internal successors, (233), 165 states have internal predecessors, (233), 21 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (51), 20 states have call predecessors, (51), 20 states have call successors, (51) [2021-10-13 00:08:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2021-10-13 00:08:25,871 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 10 [2021-10-13 00:08:25,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:08:25,871 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2021-10-13 00:08:25,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:08:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2021-10-13 00:08:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:08:25,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:08:25,872 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:08:25,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:08:26,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:08:26,088 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:08:26,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:08:26,088 INFO L82 PathProgramCache]: Analyzing trace with hash -88518740, now seen corresponding path program 1 times [2021-10-13 00:08:26,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:08:26,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143566280] [2021-10-13 00:08:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:08:26,089 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:08:26,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:08:26,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:08:26,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:08:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:08:26,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:08:26,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:08:26,601 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-10-13 00:08:26,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 117 [2021-10-13 00:08:26,612 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 00:08:26,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 451 treesize of output 433 [2021-10-13 00:08:30,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 00:08:30,330 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-13 00:08:30,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 72 [2021-10-13 00:08:36,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 83 [2021-10-13 00:08:36,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2021-10-13 00:08:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:39,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:08:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:40,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:08:40,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143566280] [2021-10-13 00:08:40,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143566280] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:08:40,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:08:40,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-13 00:08:40,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197479061] [2021-10-13 00:08:40,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:08:40,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:08:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:08:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:08:40,269 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:08:42,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:08:42,316 INFO L93 Difference]: Finished difference Result 379 states and 540 transitions. [2021-10-13 00:08:42,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:08:42,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 11 [2021-10-13 00:08:42,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:08:42,325 INFO L225 Difference]: With dead ends: 379 [2021-10-13 00:08:42,325 INFO L226 Difference]: Without dead ends: 379 [2021-10-13 00:08:42,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 788.6ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:08:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-13 00:08:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 304. [2021-10-13 00:08:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 223 states have (on average 1.5964125560538116) internal successors, (356), 247 states have internal predecessors, (356), 31 states have call successors, (31), 24 states have call predecessors, (31), 29 states have return successors, (99), 32 states have call predecessors, (99), 30 states have call successors, (99) [2021-10-13 00:08:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 486 transitions. [2021-10-13 00:08:42,365 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 486 transitions. Word has length 11 [2021-10-13 00:08:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:08:42,366 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 486 transitions. [2021-10-13 00:08:42,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:08:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 486 transitions. [2021-10-13 00:08:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:08:42,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:08:42,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:08:42,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:08:42,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:08:42,579 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-13 00:08:42,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:08:42,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1550886470, now seen corresponding path program 1 times [2021-10-13 00:08:42,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:08:42,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990267387] [2021-10-13 00:08:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:08:42,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:08:42,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:08:42,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:08:42,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:08:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:08:42,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:08:42,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:08:43,117 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-13 00:08:43,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 150 treesize of output 190 [2021-10-13 00:08:46,085 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 00:08:46,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 92 [2021-10-13 00:08:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:54,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:08:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:08:54,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:08:54,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990267387] [2021-10-13 00:08:54,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990267387] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:08:54,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:08:54,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-13 00:08:54,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017540048] [2021-10-13 00:08:54,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:08:54,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:08:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:08:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:08:54,958 INFO L87 Difference]: Start difference. First operand 304 states and 486 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:09:06,625 WARN L207 SmtUtils]: Spent 11.30 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-13 00:09:38,810 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-13 00:09:38,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-13 00:09:38,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-13 00:09:39,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:09:39,012 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-13 00:09:39,017 INFO L168 Benchmark]: Toolchain (without parser) took 100068.43 ms. Allocated memory was 77.6 MB in the beginning and 148.9 MB in the end (delta: 71.3 MB). Free memory was 58.5 MB in the beginning and 46.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 84.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:09:39,018 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:09:39,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 846.95 ms. Allocated memory is still 77.6 MB. Free memory was 58.2 MB in the beginning and 49.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:09:39,019 INFO L168 Benchmark]: Boogie Preprocessor took 127.76 ms. Allocated memory is still 77.6 MB. Free memory was 49.5 MB in the beginning and 45.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:09:39,020 INFO L168 Benchmark]: RCFGBuilder took 1125.40 ms. Allocated memory is still 77.6 MB. Free memory was 45.7 MB in the beginning and 45.2 MB in the end (delta: 545.8 kB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:09:39,020 INFO L168 Benchmark]: TraceAbstraction took 97960.48 ms. Allocated memory was 77.6 MB in the beginning and 148.9 MB in the end (delta: 71.3 MB). Free memory was 44.8 MB in the beginning and 46.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 69.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:09:39,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 846.95 ms. Allocated memory is still 77.6 MB. Free memory was 58.2 MB in the beginning and 49.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 127.76 ms. Allocated memory is still 77.6 MB. Free memory was 49.5 MB in the beginning and 45.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1125.40 ms. Allocated memory is still 77.6 MB. Free memory was 45.7 MB in the beginning and 45.2 MB in the end (delta: 545.8 kB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 97960.48 ms. Allocated memory was 77.6 MB in the beginning and 148.9 MB in the end (delta: 71.3 MB). Free memory was 44.8 MB in the beginning and 46.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 69.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d43c4-0d1d-48cd-adeb-3a85bef0c620/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...