./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 19:03:13,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:03:13,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:03:13,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:03:13,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:03:13,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:03:13,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:03:13,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:03:13,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:03:13,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:03:13,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:03:13,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:03:13,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:03:13,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:03:13,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:03:13,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:03:13,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:03:13,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:03:13,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:03:13,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:03:14,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:03:14,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:03:14,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:03:14,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:03:14,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:03:14,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:03:14,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:03:14,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:03:14,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:03:14,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:03:14,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:03:14,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:03:14,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:03:14,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:03:14,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:03:14,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:03:14,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:03:14,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:03:14,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:03:14,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:03:14,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:03:14,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-21 19:03:14,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:03:14,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:03:14,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:03:14,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:03:14,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:03:14,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:03:14,045 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:03:14,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:03:14,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:03:14,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:03:14,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:03:14,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:03:14,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:03:14,047 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:03:14,047 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:03:14,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:03:14,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:03:14,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:03:14,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:03:14,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:03:14,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:03:14,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:03:14,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:03:14,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:03:14,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:03:14,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:03:14,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:03:14,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:03:14,050 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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-21 19:03:14,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:03:14,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:03:14,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:03:14,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:03:14,327 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:03:14,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-21 19:03:14,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data/cd8d1b061/1ad8e3643a584b9daa2cb6193a02ea81/FLAG4c86102f6 [2021-10-21 19:03:14,942 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:03:14,943 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-21 19:03:14,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data/cd8d1b061/1ad8e3643a584b9daa2cb6193a02ea81/FLAG4c86102f6 [2021-10-21 19:03:15,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data/cd8d1b061/1ad8e3643a584b9daa2cb6193a02ea81 [2021-10-21 19:03:15,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:03:15,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:03:15,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:03:15,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:03:15,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:03:15,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a189911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15, skipping insertion in model container [2021-10-21 19:03:15,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:03:15,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:03:15,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:03:15,699 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:03:15,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:03:15,776 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:03:15,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15 WrapperNode [2021-10-21 19:03:15,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:03:15,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:03:15,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:03:15,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:03:15,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:03:15,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:03:15,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:03:15,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:03:15,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15" (1/1) ... [2021-10-21 19:03:15,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:03:15,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:15,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:15,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:03:15,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:03:15,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:03:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-21 19:03:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:03:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:03:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-21 19:03:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-21 19:03:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-21 19:03:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:03:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:03:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:03:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:03:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:03:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:03:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:03:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:03:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:03:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:03:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:03:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:03:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:03:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:03:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:03:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:03:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:03:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:03:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:03:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:03:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:03:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:03:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:03:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:03:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:03:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:03:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:03:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:03:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:03:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:03:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:03:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:03:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:03:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:03:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:03:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:03:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:03:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:03:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:03:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:03:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:03:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:03:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:03:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:03:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-21 19:03:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:03:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:03:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:03:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:03:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:03:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:03:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:03:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:03:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:03:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:03:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:03:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:03:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:03:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:03:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:03:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:03:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:03:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:03:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:03:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:03:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:03:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:03:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:03:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:03:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:03:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:03:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:03:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:03:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:03:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:03:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:03:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:03:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:03:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:03:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:03:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:03:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:03:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-21 19:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-21 19:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-21 19:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-21 19:03:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-21 19:03:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-21 19:03:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-21 19:03:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-21 19:03:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-21 19:03:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-21 19:03:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-21 19:03:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-21 19:03:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-21 19:03:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-21 19:03:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-21 19:03:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-21 19:03:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-21 19:03:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-21 19:03:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-21 19:03:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-21 19:03:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-21 19:03:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-21 19:03:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-21 19:03:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-21 19:03:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-21 19:03:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-21 19:03:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-21 19:03:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-21 19:03:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-21 19:03:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-21 19:03:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-21 19:03:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-21 19:03:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-21 19:03:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-21 19:03:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-21 19:03:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-21 19:03:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-21 19:03:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-21 19:03:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-21 19:03:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-21 19:03:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-21 19:03:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-21 19:03:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-21 19:03:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-21 19:03:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-21 19:03:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-21 19:03:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-21 19:03:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-21 19:03:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-21 19:03:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:03:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-21 19:03:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-21 19:03:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:03:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:03:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:03:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:03:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:03:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:03:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:03:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-21 19:03:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:03:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:03:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:03:16,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:03:16,616 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 19:03:16,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:03:16 BoogieIcfgContainer [2021-10-21 19:03:16,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:03:16,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:03:16,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:03:16,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:03:16,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:03:15" (1/3) ... [2021-10-21 19:03:16,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2532b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:03:16, skipping insertion in model container [2021-10-21 19:03:16,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:03:15" (2/3) ... [2021-10-21 19:03:16,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2532b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:03:16, skipping insertion in model container [2021-10-21 19:03:16,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:03:16" (3/3) ... [2021-10-21 19:03:16,627 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-21 19:03:16,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:03:16,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-21 19:03:16,674 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:03:16,681 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:03:16,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-21 19:03:16,697 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) [2021-10-21 19:03:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:03:16,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:16,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:16,706 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-21 19:03:16,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:16,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1891287210, now seen corresponding path program 1 times [2021-10-21 19:03:16,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:16,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134547384] [2021-10-21 19:03:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:16,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:17,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:17,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:17,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134547384] [2021-10-21 19:03:17,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134547384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:17,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:17,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:03:17,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982565289] [2021-10-21 19:03:17,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:03:17,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:17,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:03:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:03:17,111 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) [2021-10-21 19:03:17,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:17,521 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-10-21 19:03:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:03:17,522 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 [2021-10-21 19:03:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:17,532 INFO L225 Difference]: With dead ends: 106 [2021-10-21 19:03:17,532 INFO L226 Difference]: Without dead ends: 97 [2021-10-21 19:03:17,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:03:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-21 19:03:17,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2021-10-21 19:03:17,580 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) [2021-10-21 19:03:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2021-10-21 19:03:17,584 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 9 [2021-10-21 19:03:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:17,585 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2021-10-21 19:03:17,585 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) [2021-10-21 19:03:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2021-10-21 19:03:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:03:17,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:17,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:17,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:03:17,588 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-21 19:03:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:17,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1891287209, now seen corresponding path program 1 times [2021-10-21 19:03:17,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:17,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123079464] [2021-10-21 19:03:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:17,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:17,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:17,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123079464] [2021-10-21 19:03:17,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123079464] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:17,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:17,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:03:17,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53734630] [2021-10-21 19:03:17,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:03:17,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:17,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:03:17,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:03:17,932 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) [2021-10-21 19:03:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:18,528 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2021-10-21 19:03:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:03:18,529 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 [2021-10-21 19:03:18,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:18,541 INFO L225 Difference]: With dead ends: 175 [2021-10-21 19:03:18,541 INFO L226 Difference]: Without dead ends: 175 [2021-10-21 19:03:18,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 172.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:03:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-21 19:03:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2021-10-21 19:03:18,576 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) [2021-10-21 19:03:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 213 transitions. [2021-10-21 19:03:18,581 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 213 transitions. Word has length 9 [2021-10-21 19:03:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:18,582 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 213 transitions. [2021-10-21 19:03:18,583 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) [2021-10-21 19:03:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 213 transitions. [2021-10-21 19:03:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:03:18,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:18,583 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:18,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:03:18,584 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)] === [2021-10-21 19:03:18,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1499638660, now seen corresponding path program 1 times [2021-10-21 19:03:18,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:18,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892963752] [2021-10-21 19:03:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:18,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:18,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:18,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:18,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892963752] [2021-10-21 19:03:18,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892963752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:18,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:18,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:03:18,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944855500] [2021-10-21 19:03:18,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:03:18,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:03:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:03:18,986 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) [2021-10-21 19:03:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:19,773 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-10-21 19:03:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:03:19,774 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 [2021-10-21 19:03:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:19,777 INFO L225 Difference]: With dead ends: 262 [2021-10-21 19:03:19,778 INFO L226 Difference]: Without dead ends: 262 [2021-10-21 19:03:19,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 322.6ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:03:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-21 19:03:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-10-21 19:03:19,796 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) [2021-10-21 19:03:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 306 transitions. [2021-10-21 19:03:19,798 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 306 transitions. Word has length 10 [2021-10-21 19:03:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:19,799 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 306 transitions. [2021-10-21 19:03:19,799 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) [2021-10-21 19:03:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 306 transitions. [2021-10-21 19:03:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:03:19,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:19,800 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:19,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:03:19,800 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)] === [2021-10-21 19:03:19,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:19,801 INFO L82 PathProgramCache]: Analyzing trace with hash -755841706, now seen corresponding path program 1 times [2021-10-21 19:03:19,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:19,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409861873] [2021-10-21 19:03:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:19,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:20,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:20,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409861873] [2021-10-21 19:03:20,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409861873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:20,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:20,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:03:20,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838242937] [2021-10-21 19:03:20,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:03:20,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:20,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:03:20,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:03:20,129 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) [2021-10-21 19:03:21,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:21,039 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2021-10-21 19:03:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:03:21,040 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 [2021-10-21 19:03:21,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:21,044 INFO L225 Difference]: With dead ends: 236 [2021-10-21 19:03:21,044 INFO L226 Difference]: Without dead ends: 236 [2021-10-21 19:03:21,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 381.9ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:03:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-21 19:03:21,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 202. [2021-10-21 19:03:21,078 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) [2021-10-21 19:03:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-10-21 19:03:21,080 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 11 [2021-10-21 19:03:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:21,081 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-10-21 19:03:21,081 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) [2021-10-21 19:03:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2021-10-21 19:03:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:03:21,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:21,082 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:21,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:03:21,082 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)] === [2021-10-21 19:03:21,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:21,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1956256314, now seen corresponding path program 1 times [2021-10-21 19:03:21,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:21,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487223171] [2021-10-21 19:03:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:21,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:21,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:21,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487223171] [2021-10-21 19:03:21,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487223171] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:21,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:21,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:03:21,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853970247] [2021-10-21 19:03:21,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:03:21,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:21,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:03:21,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:03:21,206 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) [2021-10-21 19:03:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:21,948 INFO L93 Difference]: Finished difference Result 287 states and 397 transitions. [2021-10-21 19:03:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:03:21,950 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 [2021-10-21 19:03:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:21,952 INFO L225 Difference]: With dead ends: 287 [2021-10-21 19:03:21,952 INFO L226 Difference]: Without dead ends: 287 [2021-10-21 19:03:21,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 316.0ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:03:21,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-21 19:03:21,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 233. [2021-10-21 19:03:21,961 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) [2021-10-21 19:03:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2021-10-21 19:03:21,964 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 12 [2021-10-21 19:03:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:21,964 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2021-10-21 19:03:21,965 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) [2021-10-21 19:03:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2021-10-21 19:03:21,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:03:21,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:21,965 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:21,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:03:21,966 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)] === [2021-10-21 19:03:21,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:21,966 INFO L82 PathProgramCache]: Analyzing trace with hash -514403496, now seen corresponding path program 1 times [2021-10-21 19:03:21,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:21,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67297124] [2021-10-21 19:03:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:21,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:22,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:22,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67297124] [2021-10-21 19:03:22,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67297124] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:22,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:22,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:03:22,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929346006] [2021-10-21 19:03:22,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:03:22,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:03:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:03:22,167 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) [2021-10-21 19:03:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:22,907 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2021-10-21 19:03:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:03:22,908 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 [2021-10-21 19:03:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:22,911 INFO L225 Difference]: With dead ends: 265 [2021-10-21 19:03:22,911 INFO L226 Difference]: Without dead ends: 265 [2021-10-21 19:03:22,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 351.0ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:03:22,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-21 19:03:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 233. [2021-10-21 19:03:22,921 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) [2021-10-21 19:03:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2021-10-21 19:03:22,924 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 13 [2021-10-21 19:03:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:22,924 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2021-10-21 19:03:22,924 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) [2021-10-21 19:03:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2021-10-21 19:03:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:03:22,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:22,925 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:22,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:03:22,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-21 19:03:22,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:22,927 INFO L82 PathProgramCache]: Analyzing trace with hash -389968098, now seen corresponding path program 1 times [2021-10-21 19:03:22,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:22,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340123320] [2021-10-21 19:03:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:22,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:23,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:23,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340123320] [2021-10-21 19:03:23,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340123320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:23,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173952614] [2021-10-21 19:03:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:23,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:23,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:23,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:03:23,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:03:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:23,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:03:23,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:23,497 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-21 19:03:23,498 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 [2021-10-21 19:03:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:23,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173952614] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:23,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:03:23,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-21 19:03:23,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535510102] [2021-10-21 19:03:23,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:03:23,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:23,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:03:23,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:03:23,764 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) [2021-10-21 19:03:24,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:24,487 INFO L93 Difference]: Finished difference Result 267 states and 370 transitions. [2021-10-21 19:03:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:03:24,487 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 [2021-10-21 19:03:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:24,490 INFO L225 Difference]: With dead ends: 267 [2021-10-21 19:03:24,490 INFO L226 Difference]: Without dead ends: 267 [2021-10-21 19:03:24,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 280.3ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:03:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-21 19:03:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 237. [2021-10-21 19:03:24,500 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) [2021-10-21 19:03:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2021-10-21 19:03:24,503 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 17 [2021-10-21 19:03:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:24,503 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2021-10-21 19:03:24,503 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) [2021-10-21 19:03:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2021-10-21 19:03:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:03:24,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:24,505 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:24,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:24,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:24,721 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)] === [2021-10-21 19:03:24,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:24,721 INFO L82 PathProgramCache]: Analyzing trace with hash 795890845, now seen corresponding path program 1 times [2021-10-21 19:03:24,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:24,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287070046] [2021-10-21 19:03:24,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:24,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:25,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:25,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287070046] [2021-10-21 19:03:25,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287070046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:25,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411802485] [2021-10-21 19:03:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:25,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:25,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:25,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:03:25,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:03:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:25,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:03:25,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:25,443 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-10-21 19:03:25,444 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 [2021-10-21 19:03:34,270 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 [2021-10-21 19:03:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:34,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411802485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:34,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:03:34,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-21 19:03:34,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23040162] [2021-10-21 19:03:34,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:03:34,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:03:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:03:34,775 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) [2021-10-21 19:03:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:36,937 INFO L93 Difference]: Finished difference Result 294 states and 408 transitions. [2021-10-21 19:03:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:03:36,937 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 [2021-10-21 19:03:36,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:36,939 INFO L225 Difference]: With dead ends: 294 [2021-10-21 19:03:36,940 INFO L226 Difference]: Without dead ends: 294 [2021-10-21 19:03:36,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 868.1ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:03:36,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-21 19:03:36,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2021-10-21 19:03:36,951 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) [2021-10-21 19:03:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 349 transitions. [2021-10-21 19:03:36,954 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 349 transitions. Word has length 18 [2021-10-21 19:03:36,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:36,954 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 349 transitions. [2021-10-21 19:03:36,963 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) [2021-10-21 19:03:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 349 transitions. [2021-10-21 19:03:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:03:36,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:36,964 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:36,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:37,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:37,165 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)] === [2021-10-21 19:03:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:37,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1097187491, now seen corresponding path program 1 times [2021-10-21 19:03:37,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:37,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56320912] [2021-10-21 19:03:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:37,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:37,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:37,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:37,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56320912] [2021-10-21 19:03:37,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56320912] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:37,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322289121] [2021-10-21 19:03:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:37,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:37,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:37,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:03:37,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:03:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:37,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:03:37,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:38,038 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-10-21 19:03:38,039 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 [2021-10-21 19:03:38,056 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 [2021-10-21 19:03:40,579 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 [2021-10-21 19:03:40,583 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 [2021-10-21 19:03:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:41,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322289121] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:41,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:03:41,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-21 19:03:41,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019514349] [2021-10-21 19:03:41,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:03:41,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:03:41,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:03:41,178 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) [2021-10-21 19:03:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:42,499 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2021-10-21 19:03:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:03:42,500 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 [2021-10-21 19:03:42,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:42,502 INFO L225 Difference]: With dead ends: 272 [2021-10-21 19:03:42,502 INFO L226 Difference]: Without dead ends: 272 [2021-10-21 19:03:42,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 782.9ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:03:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-21 19:03:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2021-10-21 19:03:42,514 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) [2021-10-21 19:03:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 346 transitions. [2021-10-21 19:03:42,516 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 346 transitions. Word has length 19 [2021-10-21 19:03:42,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:42,517 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 346 transitions. [2021-10-21 19:03:42,517 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) [2021-10-21 19:03:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 346 transitions. [2021-10-21 19:03:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:03:42,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:42,518 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] [2021-10-21 19:03:42,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:42,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:42,733 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-21 19:03:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:42,733 INFO L82 PathProgramCache]: Analyzing trace with hash -321978897, now seen corresponding path program 1 times [2021-10-21 19:03:42,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:42,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736542802] [2021-10-21 19:03:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:42,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:42,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:42,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736542802] [2021-10-21 19:03:42,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736542802] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:42,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:42,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:03:42,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887599069] [2021-10-21 19:03:42,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:03:42,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:42,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:03:42,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:03:42,817 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) [2021-10-21 19:03:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:43,133 INFO L93 Difference]: Finished difference Result 352 states and 523 transitions. [2021-10-21 19:03:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:03:43,133 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 [2021-10-21 19:03:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:43,138 INFO L225 Difference]: With dead ends: 352 [2021-10-21 19:03:43,138 INFO L226 Difference]: Without dead ends: 352 [2021-10-21 19:03:43,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:03:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-21 19:03:43,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 338. [2021-10-21 19:03:43,157 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) [2021-10-21 19:03:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 521 transitions. [2021-10-21 19:03:43,162 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 521 transitions. Word has length 23 [2021-10-21 19:03:43,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:43,164 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 521 transitions. [2021-10-21 19:03:43,164 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) [2021-10-21 19:03:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 521 transitions. [2021-10-21 19:03:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:03:43,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:43,167 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] [2021-10-21 19:03:43,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:03:43,168 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting c2Err3ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-21 19:03:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash -321978673, now seen corresponding path program 1 times [2021-10-21 19:03:43,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:43,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778736844] [2021-10-21 19:03:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:43,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:43,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:43,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778736844] [2021-10-21 19:03:43,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778736844] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:43,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:43,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:03:43,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603404722] [2021-10-21 19:03:43,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:03:43,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:03:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:03:43,296 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) [2021-10-21 19:03:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:43,606 INFO L93 Difference]: Finished difference Result 391 states and 559 transitions. [2021-10-21 19:03:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:03:43,607 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 [2021-10-21 19:03:43,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:43,610 INFO L225 Difference]: With dead ends: 391 [2021-10-21 19:03:43,610 INFO L226 Difference]: Without dead ends: 391 [2021-10-21 19:03:43,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:03:43,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-21 19:03:43,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2021-10-21 19:03:43,635 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) [2021-10-21 19:03:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 553 transitions. [2021-10-21 19:03:43,638 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 553 transitions. Word has length 23 [2021-10-21 19:03:43,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:43,639 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 553 transitions. [2021-10-21 19:03:43,639 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) [2021-10-21 19:03:43,639 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 553 transitions. [2021-10-21 19:03:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 19:03:43,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:43,640 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] [2021-10-21 19:03:43,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:03:43,641 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting c2Err1ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-21 19:03:43,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:43,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1391411157, now seen corresponding path program 1 times [2021-10-21 19:03:43,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:43,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604401757] [2021-10-21 19:03:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:43,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:43,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:43,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604401757] [2021-10-21 19:03:43,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604401757] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:43,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:43,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:03:43,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345407366] [2021-10-21 19:03:43,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:03:43,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:43,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:03:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:03:43,743 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) [2021-10-21 19:03:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:44,053 INFO L93 Difference]: Finished difference Result 390 states and 557 transitions. [2021-10-21 19:03:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:03:44,054 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 [2021-10-21 19:03:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:44,057 INFO L225 Difference]: With dead ends: 390 [2021-10-21 19:03:44,057 INFO L226 Difference]: Without dead ends: 390 [2021-10-21 19:03:44,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:03:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-21 19:03:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2021-10-21 19:03:44,072 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) [2021-10-21 19:03:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 551 transitions. [2021-10-21 19:03:44,075 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 551 transitions. Word has length 24 [2021-10-21 19:03:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:44,076 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 551 transitions. [2021-10-21 19:03:44,076 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) [2021-10-21 19:03:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 551 transitions. [2021-10-21 19:03:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:03:44,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:44,077 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] [2021-10-21 19:03:44,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 19:03:44,078 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-21 19:03:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1350782223, now seen corresponding path program 1 times [2021-10-21 19:03:44,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:44,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295200522] [2021-10-21 19:03:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:44,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:44,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-21 19:03:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:44,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-21 19:03:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-21 19:03:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:44,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:44,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295200522] [2021-10-21 19:03:44,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295200522] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:03:44,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:03:44,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:03:44,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493351208] [2021-10-21 19:03:44,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:03:44,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:03:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:03:44,188 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) [2021-10-21 19:03:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:44,386 INFO L93 Difference]: Finished difference Result 284 states and 399 transitions. [2021-10-21 19:03:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:03:44,387 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 [2021-10-21 19:03:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:03:44,389 INFO L225 Difference]: With dead ends: 284 [2021-10-21 19:03:44,389 INFO L226 Difference]: Without dead ends: 284 [2021-10-21 19:03:44,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:03:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-21 19:03:44,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-10-21 19:03:44,399 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) [2021-10-21 19:03:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 399 transitions. [2021-10-21 19:03:44,401 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 399 transitions. Word has length 33 [2021-10-21 19:03:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:03:44,402 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 399 transitions. [2021-10-21 19:03:44,402 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) [2021-10-21 19:03:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 399 transitions. [2021-10-21 19:03:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:03:44,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:03:44,403 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] [2021-10-21 19:03:44,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 19:03:44,404 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)] === [2021-10-21 19:03:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:44,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1784623764, now seen corresponding path program 1 times [2021-10-21 19:03:44,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:44,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555559261] [2021-10-21 19:03:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:44,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:03:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-21 19:03:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-21 19:03:44,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:44,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555559261] [2021-10-21 19:03:44,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555559261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:44,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657276842] [2021-10-21 19:03:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:44,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:44,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:44,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:03:44,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:03:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:44,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:03:44,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:45,029 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-21 19:03:45,029 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 [2021-10-21 19:03:46,615 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-10-21 19:03:46,616 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 [2021-10-21 19:03:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-21 19:03:49,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657276842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:49,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:03:49,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-21 19:03:49,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936227624] [2021-10-21 19:03:49,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:03:49,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:49,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:03:49,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:03:49,226 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) [2021-10-21 19:04:00,382 WARN L207 SmtUtils]: Spent 9.95 s on a formula simplification that was a NOOP. DAG size: 97 [2021-10-21 19:04:17,308 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 19:04:17,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-21 19:04:17,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-21 19:04:17,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:04:17,509 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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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 [2021-10-21 19:04:17,513 INFO L168 Benchmark]: Toolchain (without parser) took 62252.18 ms. Allocated memory was 113.2 MB in the beginning and 222.3 MB in the end (delta: 109.1 MB). Free memory was 76.1 MB in the beginning and 121.0 MB in the end (delta: -44.9 MB). Peak memory consumption was 63.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:17,513 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 87.4 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:04:17,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.64 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 79.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:17,514 INFO L168 Benchmark]: Boogie Preprocessor took 68.43 ms. Allocated memory is still 113.2 MB. Free memory was 79.3 MB in the beginning and 76.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:17,514 INFO L168 Benchmark]: RCFGBuilder took 770.89 ms. Allocated memory is still 113.2 MB. Free memory was 75.8 MB in the beginning and 50.0 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:17,514 INFO L168 Benchmark]: TraceAbstraction took 60892.02 ms. Allocated memory was 113.2 MB in the beginning and 222.3 MB in the end (delta: 109.1 MB). Free memory was 49.2 MB in the beginning and 121.0 MB in the end (delta: -71.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:17,516 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 87.4 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 515.64 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 79.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.43 ms. Allocated memory is still 113.2 MB. Free memory was 79.3 MB in the beginning and 76.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 770.89 ms. Allocated memory is still 113.2 MB. Free memory was 75.8 MB in the beginning and 50.0 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 60892.02 ms. Allocated memory was 113.2 MB in the beginning and 222.3 MB in the end (delta: 109.1 MB). Free memory was 49.2 MB in the beginning and 121.0 MB in the end (delta: -71.7 MB). Peak memory consumption was 38.3 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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 19:04:19,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:04:19,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:04:19,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-21 19:04:19,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:04:19,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:04:19,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:04:19,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:04:19,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:04:19,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:04:19,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:04:19,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:04:19,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:04:19,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:04:19,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:04:19,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:04:19,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:04:19,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:04:19,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:04:19,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:04:19,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:04:19,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:04:19,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:04:19,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:04:19,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:04:19,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:04:19,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:04:19,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:04:19,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:04:19,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:04:19,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:04:19,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:04:19,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:04:19,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-10-21 19:04:19,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:04:19,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:04:19,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:04:19,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:04:19,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:04:19,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:04:19,801 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:04:19,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:04:19,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:04:19,801 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:04:19,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:04:19,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:04:19,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:04:19,803 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:04:19,803 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:04:19,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:04:19,804 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:04:19,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:04:19,804 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:04:19,805 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:04:19,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:04:19,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:04:19,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:04:19,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:04:19,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:04:19,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:04:19,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:04:19,807 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:04:19,807 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:04:19,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:04:19,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:04:19,807 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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-21 19:04:20,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:04:20,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:04:20,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:04:20,298 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:04:20,299 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:04:20,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-21 19:04:20,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data/4c47ade9a/979f3d439ef0455b9482ac544c554433/FLAG8dcb337ab [2021-10-21 19:04:21,076 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:04:21,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-21 19:04:21,104 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data/4c47ade9a/979f3d439ef0455b9482ac544c554433/FLAG8dcb337ab [2021-10-21 19:04:21,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/data/4c47ade9a/979f3d439ef0455b9482ac544c554433 [2021-10-21 19:04:21,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:04:21,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:04:21,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:04:21,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:04:21,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:04:21,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7762e725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21, skipping insertion in model container [2021-10-21 19:04:21,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:04:21,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:04:21,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:04:21,712 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:04:21,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:04:21,796 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:04:21,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21 WrapperNode [2021-10-21 19:04:21,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:04:21,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:04:21,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:04:21,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:04:21,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:04:21,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:04:21,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:04:21,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:04:21,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21" (1/1) ... [2021-10-21 19:04:21,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:04:21,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:04:21,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:04:21,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:04:22,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:04:22,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:04:22,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-21 19:04:22,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:04:22,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:04:22,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:04:22,018 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-21 19:04:22,019 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-21 19:04:22,019 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-21 19:04:22,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:04:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:04:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:04:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:04:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:04:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:04:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:04:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:04:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:04:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:04:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:04:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:04:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:04:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:04:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:04:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:04:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:04:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:04:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:04:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:04:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:04:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:04:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:04:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:04:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:04:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:04:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:04:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:04:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:04:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:04:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:04:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:04:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:04:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:04:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:04:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:04:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:04:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:04:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:04:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:04:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:04:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:04:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:04:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:04:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:04:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:04:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:04:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:04:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:04:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:04:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:04:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:04:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-21 19:04:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:04:22,034 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:04:22,034 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:04:22,034 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:04:22,034 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:04:22,034 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:04:22,035 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:04:22,035 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:04:22,035 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:04:22,035 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:04:22,035 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:04:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:04:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:04:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:04:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:04:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:04:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:04:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:04:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:04:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:04:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:04:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:04:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:04:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:04:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:04:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:04:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:04:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:04:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:04:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:04:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:04:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-21 19:04:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-21 19:04:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-21 19:04:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-21 19:04:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-21 19:04:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-21 19:04:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-21 19:04:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-21 19:04:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-21 19:04:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-21 19:04:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-21 19:04:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-21 19:04:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-21 19:04:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-21 19:04:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-21 19:04:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-21 19:04:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-21 19:04:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-21 19:04:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-21 19:04:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-21 19:04:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-21 19:04:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-21 19:04:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-21 19:04:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-21 19:04:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-21 19:04:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-21 19:04:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-21 19:04:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-21 19:04:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-21 19:04:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-21 19:04:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-21 19:04:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-21 19:04:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-21 19:04:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-21 19:04:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-21 19:04:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-21 19:04:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-21 19:04:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-21 19:04:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-21 19:04:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-21 19:04:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-21 19:04:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-21 19:04:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-21 19:04:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-21 19:04:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-21 19:04:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-21 19:04:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-21 19:04:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-21 19:04:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-21 19:04:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:04:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-21 19:04:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-21 19:04:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:04:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-21 19:04:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:04:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:04:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:04:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:04:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:04:22,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-21 19:04:22,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:04:22,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:04:22,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-21 19:04:22,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:04:22,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:04:22,917 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 19:04:22,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:04:22 BoogieIcfgContainer [2021-10-21 19:04:22,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:04:22,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:04:22,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:04:22,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:04:22,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:04:21" (1/3) ... [2021-10-21 19:04:22,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f39762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:04:22, skipping insertion in model container [2021-10-21 19:04:22,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:21" (2/3) ... [2021-10-21 19:04:22,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f39762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:04:22, skipping insertion in model container [2021-10-21 19:04:22,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:04:22" (3/3) ... [2021-10-21 19:04:22,928 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-21 19:04:22,933 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:04:22,933 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-21 19:04:23,001 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:04:23,007 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:04:23,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-21 19:04:23,023 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) [2021-10-21 19:04:23,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:04:23,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:23,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:04:23,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-21 19:04:23,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:23,048 INFO L82 PathProgramCache]: Analyzing trace with hash -317410196, now seen corresponding path program 1 times [2021-10-21 19:04:23,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:04:23,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568409280] [2021-10-21 19:04:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:23,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:04:23,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:04:23,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:04:23,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:04:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:23,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:04:23,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:04:23,688 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-21 19:04:23,689 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 [2021-10-21 19:04:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:24,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:04:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:24,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:04:24,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568409280] [2021-10-21 19:04:24,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568409280] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:24,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:24,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:04:24,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406345882] [2021-10-21 19:04:24,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:04:24,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:04:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:04:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:04:24,760 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) [2021-10-21 19:04:24,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:24,962 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2021-10-21 19:04:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:04:24,982 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 [2021-10-21 19:04:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:24,991 INFO L225 Difference]: With dead ends: 97 [2021-10-21 19:04:24,991 INFO L226 Difference]: Without dead ends: 91 [2021-10-21 19:04:24,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:04:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-21 19:04:25,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-10-21 19:04:25,032 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) [2021-10-21 19:04:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-10-21 19:04:25,046 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 9 [2021-10-21 19:04:25,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:25,047 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-10-21 19:04:25,047 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) [2021-10-21 19:04:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-10-21 19:04:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:04:25,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:25,049 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:04:25,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:04:25,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:04:25,258 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-21 19:04:25,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:25,259 INFO L82 PathProgramCache]: Analyzing trace with hash -317410195, now seen corresponding path program 1 times [2021-10-21 19:04:25,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:04:25,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421769989] [2021-10-21 19:04:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:25,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:04:25,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:04:25,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:04:25,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:04:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:25,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:04:25,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:04:25,708 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-21 19:04:25,708 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 [2021-10-21 19:04:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:25,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:04:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:26,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:04:26,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421769989] [2021-10-21 19:04:26,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421769989] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:26,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:26,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-21 19:04:26,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887012425] [2021-10-21 19:04:26,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:04:26,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:04:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:04:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:04:26,185 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) [2021-10-21 19:04:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:26,760 INFO L93 Difference]: Finished difference Result 174 states and 228 transitions. [2021-10-21 19:04:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:04:26,761 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 [2021-10-21 19:04:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:26,765 INFO L225 Difference]: With dead ends: 174 [2021-10-21 19:04:26,765 INFO L226 Difference]: Without dead ends: 174 [2021-10-21 19:04:26,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 182.5ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:04:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-21 19:04:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-10-21 19:04:26,790 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) [2021-10-21 19:04:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2021-10-21 19:04:26,804 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 9 [2021-10-21 19:04:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:26,804 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2021-10-21 19:04:26,805 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) [2021-10-21 19:04:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2021-10-21 19:04:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:04:26,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:26,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:04:26,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:04:27,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:04:27,017 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)] === [2021-10-21 19:04:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:27,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1249781436, now seen corresponding path program 1 times [2021-10-21 19:04:27,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:04:27,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299635664] [2021-10-21 19:04:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:27,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:04:27,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:04:27,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:04:27,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:04:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:27,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:04:27,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:04:27,622 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-10-21 19:04:27,622 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 [2021-10-21 19:04:33,549 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-10-21 19:04:33,550 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 [2021-10-21 19:04:42,290 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 [2021-10-21 19:04:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:43,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:04:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:44,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:04:44,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299635664] [2021-10-21 19:04:44,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299635664] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:44,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:44,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-21 19:04:44,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457673440] [2021-10-21 19:04:44,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:04:44,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:04:44,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:04:44,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:04:44,263 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) [2021-10-21 19:04:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:46,252 INFO L93 Difference]: Finished difference Result 261 states and 376 transitions. [2021-10-21 19:04:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:04:46,253 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 [2021-10-21 19:04:46,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:46,256 INFO L225 Difference]: With dead ends: 261 [2021-10-21 19:04:46,256 INFO L226 Difference]: Without dead ends: 261 [2021-10-21 19:04:46,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1164.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:04:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-21 19:04:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 202. [2021-10-21 19:04:46,283 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) [2021-10-21 19:04:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2021-10-21 19:04:46,287 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 10 [2021-10-21 19:04:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:46,287 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2021-10-21 19:04:46,288 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) [2021-10-21 19:04:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2021-10-21 19:04:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:04:46,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:46,288 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:04:46,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:04:46,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:04:46,501 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)] === [2021-10-21 19:04:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash -88518740, now seen corresponding path program 1 times [2021-10-21 19:04:46,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:04:46,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459062380] [2021-10-21 19:04:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:46,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:04:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:04:46,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:04:46,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:04:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:46,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:04:46,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:04:47,088 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-10-21 19:04:47,089 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 [2021-10-21 19:04:47,102 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-21 19:04:47,103 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 [2021-10-21 19:04:50,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 19:04:50,362 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-21 19:04:50,362 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 [2021-10-21 19:04:55,844 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 [2021-10-21 19:04:55,850 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 [2021-10-21 19:04:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:58,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:04:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:59,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:04:59,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459062380] [2021-10-21 19:04:59,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459062380] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:59,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:59,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-21 19:04:59,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334679784] [2021-10-21 19:04:59,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:04:59,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:04:59,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:04:59,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:04:59,464 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) [2021-10-21 19:05:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:05:01,493 INFO L93 Difference]: Finished difference Result 379 states and 540 transitions. [2021-10-21 19:05:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:05:01,494 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 [2021-10-21 19:05:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:05:01,499 INFO L225 Difference]: With dead ends: 379 [2021-10-21 19:05:01,499 INFO L226 Difference]: Without dead ends: 379 [2021-10-21 19:05:01,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 771.0ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:05:01,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-21 19:05:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 304. [2021-10-21 19:05:01,536 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) [2021-10-21 19:05:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 486 transitions. [2021-10-21 19:05:01,541 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 486 transitions. Word has length 11 [2021-10-21 19:05:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:05:01,541 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 486 transitions. [2021-10-21 19:05:01,542 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) [2021-10-21 19:05:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 486 transitions. [2021-10-21 19:05:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:05:01,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:05:01,543 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:05:01,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:05:01,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:05:01,755 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)] === [2021-10-21 19:05:01,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:05:01,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1550886470, now seen corresponding path program 1 times [2021-10-21 19:05:01,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:05:01,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317331398] [2021-10-21 19:05:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:05:01,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:05:01,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:05:01,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:05:01,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:05:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:05:02,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:05:02,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:05:02,248 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-21 19:05:02,248 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 [2021-10-21 19:05:04,907 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-21 19:05:04,907 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 [2021-10-21 19:05:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:05:12,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:05:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:05:13,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:05:13,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317331398] [2021-10-21 19:05:13,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317331398] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:05:13,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:05:13,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-21 19:05:13,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735803860] [2021-10-21 19:05:13,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:05:13,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:05:13,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:05:13,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:05:13,019 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) [2021-10-21 19:05:23,371 WARN L207 SmtUtils]: Spent 10.07 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-21 19:05:53,098 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 19:05:53,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-21 19:05:53,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-21 19:05:53,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:05:53,300 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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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 [2021-10-21 19:05:53,303 INFO L168 Benchmark]: Toolchain (without parser) took 91999.38 ms. Allocated memory was 60.8 MB in the beginning and 163.6 MB in the end (delta: 102.8 MB). Free memory was 38.8 MB in the beginning and 129.0 MB in the end (delta: -90.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:05:53,303 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:05:53,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.16 ms. Allocated memory is still 60.8 MB. Free memory was 38.6 MB in the beginning and 33.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:05:53,304 INFO L168 Benchmark]: Boogie Preprocessor took 91.40 ms. Allocated memory is still 60.8 MB. Free memory was 33.7 MB in the beginning and 30.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:05:53,305 INFO L168 Benchmark]: RCFGBuilder took 1029.47 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 30.0 MB in the beginning and 47.4 MB in the end (delta: -17.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:05:53,305 INFO L168 Benchmark]: TraceAbstraction took 90380.21 ms. Allocated memory was 92.3 MB in the beginning and 163.6 MB in the end (delta: 71.3 MB). Free memory was 47.0 MB in the beginning and 129.0 MB in the end (delta: -81.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:05:53,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 493.16 ms. Allocated memory is still 60.8 MB. Free memory was 38.6 MB in the beginning and 33.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.40 ms. Allocated memory is still 60.8 MB. Free memory was 33.7 MB in the beginning and 30.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1029.47 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 30.0 MB in the beginning and 47.4 MB in the end (delta: -17.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 90380.21 ms. Allocated memory was 92.3 MB in the beginning and 163.6 MB in the end (delta: 71.3 MB). Free memory was 47.0 MB in the beginning and 129.0 MB in the end (delta: -81.9 MB). There was no memory consumed. 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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/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_eaf34e47-6fd9-4b8b-8add-c087b7abda67/bin/uautomizer-j4sWxH34Be/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...