./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 129dca108ba5ab1702fbcd782a34bbf933adb446 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 129dca108ba5ab1702fbcd782a34bbf933adb446 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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-20ed64e [2021-08-27 04:29:03,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:29:03,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:29:03,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:29:03,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:29:03,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:29:03,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:29:03,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:29:03,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:29:03,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:29:03,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:29:03,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:29:03,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:29:03,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:29:03,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:29:03,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:29:03,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:29:03,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:29:03,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:29:03,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:29:03,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:29:03,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:29:03,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:29:03,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:29:03,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:29:03,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:29:03,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:29:03,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:29:03,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:29:03,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:29:03,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:29:03,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:29:03,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:29:03,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:29:03,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:29:03,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:29:03,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:29:03,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:29:03,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:29:03,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:29:03,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:29:03,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-27 04:29:03,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:29:03,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:29:03,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:29:03,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:29:03,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:29:03,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:29:03,974 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:29:03,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:29:03,975 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:29:03,975 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:29:03,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:29:03,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:29:03,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:29:03,976 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:29:03,976 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:29:03,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:29:03,976 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:29:03,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:29:03,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:29:03,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:29:03,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:29:03,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:29:03,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:29:03,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:29:03,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:29:03,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:29:03,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:29:03,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:29:03,978 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 129dca108ba5ab1702fbcd782a34bbf933adb446 [2021-08-27 04:29:04,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:29:04,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:29:04,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:29:04,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:29:04,348 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:29:04,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-08-27 04:29:04,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/526483069/31cb830618144b93aa2794a573bfadba/FLAGe53b977cd [2021-08-27 04:29:04,997 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:29:04,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-08-27 04:29:05,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/526483069/31cb830618144b93aa2794a573bfadba/FLAGe53b977cd [2021-08-27 04:29:05,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/526483069/31cb830618144b93aa2794a573bfadba [2021-08-27 04:29:05,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:29:05,301 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:29:05,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:29:05,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:29:05,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:29:05,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2599c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05, skipping insertion in model container [2021-08-27 04:29:05,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:29:05,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:29:05,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:29:05,707 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:29:05,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:29:05,802 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:29:05,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05 WrapperNode [2021-08-27 04:29:05,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:29:05,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:29:05,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:29:05,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:29:05,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:29:05,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:29:05,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:29:05,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:29:05,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05" (1/1) ... [2021-08-27 04:29:05,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:29:05,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:29:05,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 04:29:05,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 04:29:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:29:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:29:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-08-27 04:29:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:29:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:29:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-08-27 04:29:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-08-27 04:29:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-08-27 04:29:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:29:05,988 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:29:05,989 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:29:05,989 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:29:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:29:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:29:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:29:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:29:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:29:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:29:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:29:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:29:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:29:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:29:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:29:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:29:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:29:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:29:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:29:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:29:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:29:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:29:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:29:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:29:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:29:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:29:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:29:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:29:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:29:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:29:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:29:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:29:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:29:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:29:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:29:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:29:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:29:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:29:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:29:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:29:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:29:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:29:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:29:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:29:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:29:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:29:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:29:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:29:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:29:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:29:06,000 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:29:06,000 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:29:06,000 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:29:06,000 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:29:06,000 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:29:06,001 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:29:06,001 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:29:06,001 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 04:29:06,001 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:29:06,001 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:29:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:29:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:29:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:29:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:29:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:29:06,004 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:29:06,004 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:29:06,004 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:29:06,004 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:29:06,004 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:29:06,004 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:29:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:29:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:29:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:29:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:29:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:29:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:29:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:29:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:29:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:29:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:29:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:29:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:29:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:29:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:29:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:29:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:29:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:29:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:29:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:29:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:29:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:29:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:29:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:29:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:29:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:29:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:29:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:29:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:29:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:29:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:29:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:29:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:29:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:29:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:29:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:29:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 04:29:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 04:29:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 04:29:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 04:29:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 04:29:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 04:29:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 04:29:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 04:29:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 04:29:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 04:29:06,013 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 04:29:06,013 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 04:29:06,013 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 04:29:06,014 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 04:29:06,014 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 04:29:06,014 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 04:29:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 04:29:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 04:29:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 04:29:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 04:29:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 04:29:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 04:29:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 04:29:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 04:29:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 04:29:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 04:29:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 04:29:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 04:29:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 04:29:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 04:29:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 04:29:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 04:29:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-08-27 04:29:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 04:29:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 04:29:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 04:29:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 04:29:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 04:29:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 04:29:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 04:29:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 04:29:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 04:29:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 04:29:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 04:29:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 04:29:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 04:29:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 04:29:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-08-27 04:29:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-08-27 04:29:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:29:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-08-27 04:29:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-08-27 04:29:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:29:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:29:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:29:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:29:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:29:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:29:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 04:29:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 04:29:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:29:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:29:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:29:06,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:29:06,735 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 04:29:06,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:29:06 BoogieIcfgContainer [2021-08-27 04:29:06,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:29:06,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:29:06,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:29:06,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:29:06,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:29:05" (1/3) ... [2021-08-27 04:29:06,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490c4ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:29:06, skipping insertion in model container [2021-08-27 04:29:06,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:05" (2/3) ... [2021-08-27 04:29:06,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490c4ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:29:06, skipping insertion in model container [2021-08-27 04:29:06,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:29:06" (3/3) ... [2021-08-27 04:29:06,743 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2021-08-27 04:29:06,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:29:06,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-08-27 04:29:06,795 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:29:06,804 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 04:29:06,804 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-08-27 04:29:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 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) [2021-08-27 04:29:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:29:06,822 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:06,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:06,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:29:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1583989328, now seen corresponding path program 1 times [2021-08-27 04:29:06,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:06,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714734204] [2021-08-27 04:29:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:06,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:07,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:07,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714734204] [2021-08-27 04:29:07,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714734204] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:07,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:07,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 04:29:07,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758323249] [2021-08-27 04:29:07,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:29:07,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:07,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:29:07,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:29:07,329 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 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) [2021-08-27 04:29:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:07,867 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2021-08-27 04:29:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:29:07,869 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 [2021-08-27 04:29:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:07,880 INFO L225 Difference]: With dead ends: 105 [2021-08-27 04:29:07,880 INFO L226 Difference]: Without dead ends: 96 [2021-08-27 04:29:07,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:29:07,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-27 04:29:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-08-27 04:29:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 50 states have (on average 1.52) internal successors, (76), 70 states have internal predecessors, (76), 12 states have call successors, (12), 7 states have call predecessors, (12), 12 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) [2021-08-27 04:29:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 118 transitions. [2021-08-27 04:29:07,918 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 118 transitions. Word has length 9 [2021-08-27 04:29:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:07,919 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 118 transitions. [2021-08-27 04:29:07,919 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) [2021-08-27 04:29:07,919 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 118 transitions. [2021-08-27 04:29:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:29:07,920 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:07,920 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:07,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 04:29:07,921 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:29:07,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:07,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1583989329, now seen corresponding path program 1 times [2021-08-27 04:29:07,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:07,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812852733] [2021-08-27 04:29:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:07,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:08,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:08,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812852733] [2021-08-27 04:29:08,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812852733] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:08,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:08,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:29:08,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327213893] [2021-08-27 04:29:08,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:29:08,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:08,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:29:08,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:29:08,172 INFO L87 Difference]: Start difference. First operand 92 states and 118 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) [2021-08-27 04:29:08,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:09,000 INFO L93 Difference]: Finished difference Result 176 states and 238 transitions. [2021-08-27 04:29:09,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:29:09,001 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 [2021-08-27 04:29:09,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:09,003 INFO L225 Difference]: With dead ends: 176 [2021-08-27 04:29:09,003 INFO L226 Difference]: Without dead ends: 176 [2021-08-27 04:29:09,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 258.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:29:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-08-27 04:29:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 145. [2021-08-27 04:29:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 112 states have internal predecessors, (143), 17 states have call successors, (17), 11 states have call predecessors, (17), 18 states have return successors, (51), 21 states have call predecessors, (51), 16 states have call successors, (51) [2021-08-27 04:29:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 211 transitions. [2021-08-27 04:29:09,024 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 211 transitions. Word has length 9 [2021-08-27 04:29:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:09,025 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 211 transitions. [2021-08-27 04:29:09,025 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) [2021-08-27 04:29:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 211 transitions. [2021-08-27 04:29:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 04:29:09,025 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:09,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:09,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 04:29:09,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:29:09,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:09,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1859028932, now seen corresponding path program 1 times [2021-08-27 04:29:09,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:09,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27373069] [2021-08-27 04:29:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:09,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:09,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:09,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27373069] [2021-08-27 04:29:09,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27373069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:09,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:09,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:29:09,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288521229] [2021-08-27 04:29:09,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:29:09,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:09,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:29:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:29:09,384 INFO L87 Difference]: Start difference. First operand 145 states and 211 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) [2021-08-27 04:29:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:10,430 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2021-08-27 04:29:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 04:29:10,430 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 [2021-08-27 04:29:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:10,434 INFO L225 Difference]: With dead ends: 270 [2021-08-27 04:29:10,434 INFO L226 Difference]: Without dead ends: 270 [2021-08-27 04:29:10,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 439.3ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 04:29:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-08-27 04:29:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 219. [2021-08-27 04:29:10,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 151 states have (on average 1.5496688741721854) internal successors, (234), 172 states have internal predecessors, (234), 23 states have call successors, (23), 18 states have call predecessors, (23), 27 states have return successors, (67), 28 states have call predecessors, (67), 22 states have call successors, (67) [2021-08-27 04:29:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 324 transitions. [2021-08-27 04:29:10,463 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 324 transitions. Word has length 10 [2021-08-27 04:29:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:10,463 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 324 transitions. [2021-08-27 04:29:10,463 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) [2021-08-27 04:29:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 324 transitions. [2021-08-27 04:29:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 04:29:10,464 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:10,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:10,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 04:29:10,464 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:29:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:10,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1795322128, now seen corresponding path program 1 times [2021-08-27 04:29:10,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:10,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299338819] [2021-08-27 04:29:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:10,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:10,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:10,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299338819] [2021-08-27 04:29:10,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299338819] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:10,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:10,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:29:10,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680993227] [2021-08-27 04:29:10,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:29:10,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:10,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:29:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:29:10,846 INFO L87 Difference]: Start difference. First operand 219 states and 324 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) [2021-08-27 04:29:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:11,976 INFO L93 Difference]: Finished difference Result 256 states and 361 transitions. [2021-08-27 04:29:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:29:11,977 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 [2021-08-27 04:29:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:11,979 INFO L225 Difference]: With dead ends: 256 [2021-08-27 04:29:11,979 INFO L226 Difference]: Without dead ends: 256 [2021-08-27 04:29:11,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 565.9ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 04:29:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-08-27 04:29:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 219. [2021-08-27 04:29:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 151 states have (on average 1.5364238410596027) internal successors, (232), 172 states have internal predecessors, (232), 23 states have call successors, (23), 18 states have call predecessors, (23), 27 states have return successors, (67), 28 states have call predecessors, (67), 22 states have call successors, (67) [2021-08-27 04:29:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 322 transitions. [2021-08-27 04:29:12,001 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 322 transitions. Word has length 11 [2021-08-27 04:29:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:12,002 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 322 transitions. [2021-08-27 04:29:12,002 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) [2021-08-27 04:29:12,002 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 322 transitions. [2021-08-27 04:29:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 04:29:12,002 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:12,002 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:12,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 04:29:12,003 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:29:12,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:12,003 INFO L82 PathProgramCache]: Analyzing trace with hash -179588794, now seen corresponding path program 1 times [2021-08-27 04:29:12,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:12,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145101613] [2021-08-27 04:29:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:12,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:12,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:12,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:12,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145101613] [2021-08-27 04:29:12,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145101613] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:12,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:12,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:29:12,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071254223] [2021-08-27 04:29:12,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:29:12,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:12,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:29:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:29:12,189 INFO L87 Difference]: Start difference. First operand 219 states and 322 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) [2021-08-27 04:29:13,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:13,211 INFO L93 Difference]: Finished difference Result 290 states and 395 transitions. [2021-08-27 04:29:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 04:29:13,213 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 [2021-08-27 04:29:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:13,215 INFO L225 Difference]: With dead ends: 290 [2021-08-27 04:29:13,215 INFO L226 Difference]: Without dead ends: 290 [2021-08-27 04:29:13,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 469.8ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-08-27 04:29:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-08-27 04:29:13,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 254. [2021-08-27 04:29:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 183 states have (on average 1.5245901639344261) internal successors, (279), 205 states have internal predecessors, (279), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-08-27 04:29:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 375 transitions. [2021-08-27 04:29:13,233 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 375 transitions. Word has length 12 [2021-08-27 04:29:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:13,234 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 375 transitions. [2021-08-27 04:29:13,234 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) [2021-08-27 04:29:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 375 transitions. [2021-08-27 04:29:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 04:29:13,234 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:13,234 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:13,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 04:29:13,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:29:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:13,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1272285230, now seen corresponding path program 1 times [2021-08-27 04:29:13,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:13,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003251280] [2021-08-27 04:29:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:13,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:13,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:13,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003251280] [2021-08-27 04:29:13,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003251280] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:13,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:13,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:29:13,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947010907] [2021-08-27 04:29:13,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:29:13,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:29:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:29:13,481 INFO L87 Difference]: Start difference. First operand 254 states and 375 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) [2021-08-27 04:29:14,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:14,392 INFO L93 Difference]: Finished difference Result 280 states and 383 transitions. [2021-08-27 04:29:14,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:29:14,394 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 [2021-08-27 04:29:14,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:14,397 INFO L225 Difference]: With dead ends: 280 [2021-08-27 04:29:14,397 INFO L226 Difference]: Without dead ends: 280 [2021-08-27 04:29:14,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 463.5ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-27 04:29:14,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-08-27 04:29:14,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 254. [2021-08-27 04:29:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 183 states have (on average 1.5136612021857923) internal successors, (277), 205 states have internal predecessors, (277), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-08-27 04:29:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 373 transitions. [2021-08-27 04:29:14,415 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 373 transitions. Word has length 13 [2021-08-27 04:29:14,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:14,416 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 373 transitions. [2021-08-27 04:29:14,416 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) [2021-08-27 04:29:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 373 transitions. [2021-08-27 04:29:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:29:14,417 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:14,417 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:14,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 04:29:14,417 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:29:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:14,418 INFO L82 PathProgramCache]: Analyzing trace with hash 668439832, now seen corresponding path program 1 times [2021-08-27 04:29:14,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:14,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839839626] [2021-08-27 04:29:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:14,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:14,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:14,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839839626] [2021-08-27 04:29:14,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839839626] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:29:14,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263215664] [2021-08-27 04:29:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:14,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:29:14,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:29:14,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:29:14,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 04:29:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:14,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 04:29:14,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:15,097 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-08-27 04:29:15,098 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 [2021-08-27 04:29:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:15,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263215664] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:29:15,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:29:15,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-08-27 04:29:15,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546410245] [2021-08-27 04:29:15,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:29:15,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:15,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:29:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:29:15,523 INFO L87 Difference]: Start difference. First operand 254 states and 373 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) [2021-08-27 04:29:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:16,523 INFO L93 Difference]: Finished difference Result 301 states and 422 transitions. [2021-08-27 04:29:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 04:29:16,524 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 [2021-08-27 04:29:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:16,525 INFO L225 Difference]: With dead ends: 301 [2021-08-27 04:29:16,525 INFO L226 Difference]: Without dead ends: 301 [2021-08-27 04:29:16,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 413.9ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:29:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-08-27 04:29:16,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 257. [2021-08-27 04:29:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 186 states have (on average 1.456989247311828) internal successors, (271), 208 states have internal predecessors, (271), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-08-27 04:29:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 367 transitions. [2021-08-27 04:29:16,541 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 367 transitions. Word has length 17 [2021-08-27 04:29:16,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:16,542 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 367 transitions. [2021-08-27 04:29:16,542 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) [2021-08-27 04:29:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 367 transitions. [2021-08-27 04:29:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 04:29:16,543 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:16,543 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:16,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 04:29:16,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:29:16,767 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:29:16,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:16,768 INFO L82 PathProgramCache]: Analyzing trace with hash -753201699, now seen corresponding path program 1 times [2021-08-27 04:29:16,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:16,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181722327] [2021-08-27 04:29:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:16,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:17,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:17,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181722327] [2021-08-27 04:29:17,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181722327] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:29:17,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457271646] [2021-08-27 04:29:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:17,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:29:17,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:29:17,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:29:17,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 04:29:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:17,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 04:29:17,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:17,654 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-08-27 04:29:17,654 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 82 treesize of output 116 [2021-08-27 04:29:28,740 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 94 treesize of output 70 [2021-08-27 04:29:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:29,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457271646] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:29:29,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:29:29,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-08-27 04:29:29,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599850884] [2021-08-27 04:29:29,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 04:29:29,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 04:29:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-08-27 04:29:29,426 INFO L87 Difference]: Start difference. First operand 257 states and 367 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 04:30:09,460 WARN L207 SmtUtils]: Spent 8.69 s on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-08-27 04:30:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:30:20,076 INFO L93 Difference]: Finished difference Result 321 states and 444 transitions. [2021-08-27 04:30:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 04:30:20,077 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 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 [2021-08-27 04:30:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:30:20,079 INFO L225 Difference]: With dead ends: 321 [2021-08-27 04:30:20,079 INFO L226 Difference]: Without dead ends: 321 [2021-08-27 04:30:20,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 24426.0ms TimeCoverageRelationStatistics Valid=251, Invalid=803, Unknown=2, NotChecked=0, Total=1056 [2021-08-27 04:30:20,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-08-27 04:30:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 263. [2021-08-27 04:30:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 192 states have (on average 1.4479166666666667) internal successors, (278), 214 states have internal predecessors, (278), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-08-27 04:30:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 374 transitions. [2021-08-27 04:30:20,090 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 374 transitions. Word has length 18 [2021-08-27 04:30:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:30:20,091 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 374 transitions. [2021-08-27 04:30:20,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 04:30:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 374 transitions. [2021-08-27 04:30:20,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 04:30:20,092 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:30:20,092 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:30:20,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 04:30:20,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-08-27 04:30:20,316 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:30:20,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:30:20,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1874416105, now seen corresponding path program 1 times [2021-08-27 04:30:20,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:30:20,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84920511] [2021-08-27 04:30:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:30:20,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:30:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:30:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:30:20,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:30:20,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84920511] [2021-08-27 04:30:20,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84920511] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:30:20,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744214287] [2021-08-27 04:30:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:30:20,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:30:20,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:30:20,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:30:20,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 04:30:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:21,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 04:30:21,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:30:21,373 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-08-27 04:30:21,373 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 51 treesize of output 86 [2021-08-27 04:30:21,382 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 114 treesize of output 112 [2021-08-27 04:30:24,776 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 99 treesize of output 75 [2021-08-27 04:30:24,780 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 72 treesize of output 60 [2021-08-27 04:30:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:30:25,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744214287] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:30:25,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:30:25,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-08-27 04:30:25,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679810979] [2021-08-27 04:30:25,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 04:30:25,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:30:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 04:30:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-27 04:30:25,974 INFO L87 Difference]: Start difference. First operand 263 states and 374 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) [2021-08-27 04:30:27,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:30:27,784 INFO L93 Difference]: Finished difference Result 310 states and 433 transitions. [2021-08-27 04:30:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 04:30:27,785 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 [2021-08-27 04:30:27,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:30:27,787 INFO L225 Difference]: With dead ends: 310 [2021-08-27 04:30:27,787 INFO L226 Difference]: Without dead ends: 310 [2021-08-27 04:30:27,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 941.7ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-08-27 04:30:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-08-27 04:30:27,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 263. [2021-08-27 04:30:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 192 states have (on average 1.4322916666666667) internal successors, (275), 214 states have internal predecessors, (275), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-08-27 04:30:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 371 transitions. [2021-08-27 04:30:27,797 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 371 transitions. Word has length 19 [2021-08-27 04:30:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:30:27,797 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 371 transitions. [2021-08-27 04:30:27,797 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) [2021-08-27 04:30:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 371 transitions. [2021-08-27 04:30:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 04:30:27,798 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:30:27,798 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] [2021-08-27 04:30:27,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-08-27 04:30:28,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:30:28,013 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:30:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:30:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash 550421903, now seen corresponding path program 1 times [2021-08-27 04:30:28,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:30:28,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659317351] [2021-08-27 04:30:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:30:28,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:30:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:28,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:30:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:30:28,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:30:28,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659317351] [2021-08-27 04:30:28,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659317351] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:30:28,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:30:28,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:30:28,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317578502] [2021-08-27 04:30:28,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:30:28,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:30:28,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:30:28,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:30:28,162 INFO L87 Difference]: Start difference. First operand 263 states and 371 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) [2021-08-27 04:30:28,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:30:28,553 INFO L93 Difference]: Finished difference Result 259 states and 336 transitions. [2021-08-27 04:30:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:30:28,554 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 [2021-08-27 04:30:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:30:28,555 INFO L225 Difference]: With dead ends: 259 [2021-08-27 04:30:28,555 INFO L226 Difference]: Without dead ends: 259 [2021-08-27 04:30:28,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:30:28,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-08-27 04:30:28,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 243. [2021-08-27 04:30:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 178 states have (on average 1.4382022471910112) internal successors, (256), 200 states have internal predecessors, (256), 22 states have call successors, (22), 18 states have call predecessors, (22), 25 states have return successors, (49), 24 states have call predecessors, (49), 21 states have call successors, (49) [2021-08-27 04:30:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 327 transitions. [2021-08-27 04:30:28,563 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 327 transitions. Word has length 23 [2021-08-27 04:30:28,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:30:28,563 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 327 transitions. [2021-08-27 04:30:28,563 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) [2021-08-27 04:30:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 327 transitions. [2021-08-27 04:30:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 04:30:28,564 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:30:28,565 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] [2021-08-27 04:30:28,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 04:30:28,565 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:30:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:30:28,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2138371761, now seen corresponding path program 1 times [2021-08-27 04:30:28,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:30:28,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969072732] [2021-08-27 04:30:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:30:28,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:30:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:30:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 04:30:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:28,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 04:30:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:28,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 04:30:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:30:28,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:30:28,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969072732] [2021-08-27 04:30:28,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969072732] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:30:28,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:30:28,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:30:28,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877562868] [2021-08-27 04:30:28,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:30:28,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:30:28,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:30:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:30:28,736 INFO L87 Difference]: Start difference. First operand 243 states and 327 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) [2021-08-27 04:30:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:30:28,942 INFO L93 Difference]: Finished difference Result 204 states and 259 transitions. [2021-08-27 04:30:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:30:28,943 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 [2021-08-27 04:30:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:30:28,944 INFO L225 Difference]: With dead ends: 204 [2021-08-27 04:30:28,944 INFO L226 Difference]: Without dead ends: 204 [2021-08-27 04:30:28,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:30:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-08-27 04:30:28,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 199. [2021-08-27 04:30:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 144 states have (on average 1.4097222222222223) internal successors, (203), 165 states have internal predecessors, (203), 18 states have call successors, (18), 15 states have call predecessors, (18), 19 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2021-08-27 04:30:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-08-27 04:30:28,950 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 33 [2021-08-27 04:30:28,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:30:28,950 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-08-27 04:30:28,950 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) [2021-08-27 04:30:28,950 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-08-27 04:30:28,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 04:30:28,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:30:28,951 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] [2021-08-27 04:30:28,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 04:30:28,952 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:30:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:30:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash -138461554, now seen corresponding path program 1 times [2021-08-27 04:30:28,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:30:28,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889717105] [2021-08-27 04:30:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:30:28,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:30:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:30:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 04:30:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 04:30:29,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:30:29,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889717105] [2021-08-27 04:30:29,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889717105] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:30:29,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854716728] [2021-08-27 04:30:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:30:29,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:30:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:30:29,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:30:29,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 04:30:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:29,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 04:30:29,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:30:29,963 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-08-27 04:30:29,963 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 [2021-08-27 04:30:31,791 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-08-27 04:30:31,792 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 [2021-08-27 04:30:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 04:30:35,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854716728] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:30:35,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:30:35,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-08-27 04:30:35,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401574812] [2021-08-27 04:30:35,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 04:30:35,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:30:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 04:30:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:30:35,043 INFO L87 Difference]: Start difference. First operand 199 states and 254 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) [2021-08-27 04:30:50,335 WARN L207 SmtUtils]: Spent 8.47 s on a formula simplification that was a NOOP. DAG size: 97 [2021-08-27 04:30:59,331 WARN L224 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-27 04:30:59,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-08-27 04:30:59,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-27 04:30:59,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:30:59,536 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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:310) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:154) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) 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:152) ... 35 more [2021-08-27 04:30:59,538 INFO L168 Benchmark]: Toolchain (without parser) took 114237.21 ms. Allocated memory was 56.6 MB in the beginning and 264.2 MB in the end (delta: 207.6 MB). Free memory was 34.2 MB in the beginning and 119.8 MB in the end (delta: -85.6 MB). Peak memory consumption was 122.9 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,539 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:30:59,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.93 ms. Allocated memory is still 56.6 MB. Free memory was 33.9 MB in the beginning and 30.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,539 INFO L168 Benchmark]: Boogie Preprocessor took 91.80 ms. Allocated memory is still 56.6 MB. Free memory was 30.5 MB in the beginning and 27.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,539 INFO L168 Benchmark]: RCFGBuilder took 839.75 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 27.2 MB in the beginning and 31.7 MB in the end (delta: -4.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,540 INFO L168 Benchmark]: TraceAbstraction took 112799.37 ms. Allocated memory was 69.2 MB in the beginning and 264.2 MB in the end (delta: 195.0 MB). Free memory was 31.1 MB in the beginning and 119.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 107.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,541 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 501.93 ms. Allocated memory is still 56.6 MB. Free memory was 33.9 MB in the beginning and 30.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.80 ms. Allocated memory is still 56.6 MB. Free memory was 30.5 MB in the beginning and 27.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 839.75 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 27.2 MB in the beginning and 31.7 MB in the end (delta: -4.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 112799.37 ms. Allocated memory was 69.2 MB in the beginning and 264.2 MB in the end (delta: 195.0 MB). Free memory was 31.1 MB in the beginning and 119.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 107.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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:310) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 04:31:01,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:31:01,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:31:01,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:31:01,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:31:01,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:31:01,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:31:01,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:31:01,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:31:01,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:31:01,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:31:01,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:31:01,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:31:01,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:31:01,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:31:01,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:31:01,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:31:01,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:31:01,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:31:01,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:31:01,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:31:01,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:31:01,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:31:01,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:31:01,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:31:01,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:31:01,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:31:01,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:31:01,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:31:01,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:31:01,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:31:01,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:31:01,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:31:01,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:31:01,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:31:01,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:31:01,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:31:01,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:31:01,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:31:01,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:31:01,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:31:01,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-08-27 04:31:01,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:31:01,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:31:01,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:31:01,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:31:01,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:31:01,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:31:01,562 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:31:01,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:31:01,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:31:01,563 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:31:01,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:31:01,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:31:01,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:31:01,563 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:31:01,564 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:31:01,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:31:01,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:31:01,572 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 04:31:01,572 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 04:31:01,572 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:31:01,572 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:31:01,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:31:01,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:31:01,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:31:01,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:31:01,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:31:01,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:31:01,574 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 04:31:01,575 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 04:31:01,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:31:01,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 04:31:01,575 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 129dca108ba5ab1702fbcd782a34bbf933adb446 [2021-08-27 04:31:01,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:31:01,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:31:01,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:31:01,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:31:01,871 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:31:01,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-08-27 04:31:01,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6821662e1/22f3068d6d814982a38cf44149810783/FLAGd3500b12d [2021-08-27 04:31:02,430 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:31:02,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-08-27 04:31:02,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6821662e1/22f3068d6d814982a38cf44149810783/FLAGd3500b12d [2021-08-27 04:31:02,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6821662e1/22f3068d6d814982a38cf44149810783 [2021-08-27 04:31:02,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:31:02,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:31:02,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:31:02,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:31:02,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:31:02,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:31:02" (1/1) ... [2021-08-27 04:31:02,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcb7471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:02, skipping insertion in model container [2021-08-27 04:31:02,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:31:02" (1/1) ... [2021-08-27 04:31:02,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:31:02,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:31:03,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:31:03,286 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:31:03,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:31:03,348 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:31:03,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03 WrapperNode [2021-08-27 04:31:03,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:31:03,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:31:03,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:31:03,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:31:03,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03" (1/1) ... [2021-08-27 04:31:03,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03" (1/1) ... [2021-08-27 04:31:03,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03" (1/1) ... [2021-08-27 04:31:03,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03" (1/1) ... [2021-08-27 04:31:03,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03" (1/1) ... [2021-08-27 04:31:03,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03" (1/1) ... [2021-08-27 04:31:03,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03" (1/1) ... [2021-08-27 04:31:03,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:31:03,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:31:03,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:31:03,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:31:03,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03" (1/1) ... [2021-08-27 04:31:03,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:31:03,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:31:03,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 04:31:03,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 04:31:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:31:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:31:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-08-27 04:31:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 04:31:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:31:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:31:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-08-27 04:31:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-08-27 04:31:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-08-27 04:31:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:31:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:31:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:31:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:31:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:31:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:31:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:31:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 04:31:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:31:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:31:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:31:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:31:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:31:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:31:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:31:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:31:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:31:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:31:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:31:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:31:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:31:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:31:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:31:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:31:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:31:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:31:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:31:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:31:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:31:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:31:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:31:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:31:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:31:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:31:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:31:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:31:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:31:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:31:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:31:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:31:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:31:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 04:31:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 04:31:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 04:31:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 04:31:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-08-27 04:31:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:31:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 04:31:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:31:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:31:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:31:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:31:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 04:31:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 04:31:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:31:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 04:31:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 04:31:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:31:04,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:31:04,137 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 04:31:04,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:31:04 BoogieIcfgContainer [2021-08-27 04:31:04,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:31:04,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:31:04,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:31:04,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:31:04,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:31:02" (1/3) ... [2021-08-27 04:31:04,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccf5956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:31:04, skipping insertion in model container [2021-08-27 04:31:04,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:31:03" (2/3) ... [2021-08-27 04:31:04,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccf5956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:31:04, skipping insertion in model container [2021-08-27 04:31:04,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:31:04" (3/3) ... [2021-08-27 04:31:04,144 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2021-08-27 04:31:04,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:31:04,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-08-27 04:31:04,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:31:04,183 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 04:31:04,184 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-08-27 04:31:04,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 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) [2021-08-27 04:31:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:31:04,200 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:31:04,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:31:04,201 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:31:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:31:04,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1137100954, now seen corresponding path program 1 times [2021-08-27 04:31:04,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:31:04,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735277963] [2021-08-27 04:31:04,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:31:04,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:31:04,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:31:04,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:31:04,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 04:31:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:31:04,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 04:31:04,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:31:04,753 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-08-27 04:31:04,754 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 [2021-08-27 04:31:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:05,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:31:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:05,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:31:05,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735277963] [2021-08-27 04:31:05,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735277963] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:31:05,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:31:05,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 04:31:05,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198849786] [2021-08-27 04:31:05,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 04:31:05,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:31:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 04:31:05,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:31:05,608 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 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) [2021-08-27 04:31:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:31:05,736 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2021-08-27 04:31:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 04:31:05,737 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 [2021-08-27 04:31:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:31:05,744 INFO L225 Difference]: With dead ends: 93 [2021-08-27 04:31:05,745 INFO L226 Difference]: Without dead ends: 87 [2021-08-27 04:31:05,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:31:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-08-27 04:31:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2021-08-27 04:31:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.565217391304348) internal successors, (72), 65 states have internal predecessors, (72), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2021-08-27 04:31:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2021-08-27 04:31:05,777 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 9 [2021-08-27 04:31:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:31:05,777 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2021-08-27 04:31:05,777 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) [2021-08-27 04:31:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2021-08-27 04:31:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:31:05,778 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:31:05,779 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:31:05,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 04:31:05,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:31:05,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:31:05,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:31:05,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1137100953, now seen corresponding path program 1 times [2021-08-27 04:31:05,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:31:05,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279370816] [2021-08-27 04:31:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:31:05,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:31:05,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:31:05,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:31:05,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 04:31:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:31:06,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 04:31:06,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:31:06,382 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-08-27 04:31:06,382 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 [2021-08-27 04:31:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:06,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:31:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:06,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:31:06,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279370816] [2021-08-27 04:31:06,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279370816] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:31:06,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:31:06,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-27 04:31:06,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345118201] [2021-08-27 04:31:06,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:31:06,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:31:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:31:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:31:06,789 INFO L87 Difference]: Start difference. First operand 83 states and 99 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) [2021-08-27 04:31:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:31:07,258 INFO L93 Difference]: Finished difference Result 172 states and 231 transitions. [2021-08-27 04:31:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:31:07,259 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 [2021-08-27 04:31:07,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:31:07,262 INFO L225 Difference]: With dead ends: 172 [2021-08-27 04:31:07,262 INFO L226 Difference]: Without dead ends: 172 [2021-08-27 04:31:07,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:31:07,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-08-27 04:31:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 140. [2021-08-27 04:31:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 91 states have (on average 1.5714285714285714) internal successors, (143), 110 states have internal predecessors, (143), 16 states have call successors, (16), 11 states have call predecessors, (16), 15 states have return successors, (41), 18 states have call predecessors, (41), 15 states have call successors, (41) [2021-08-27 04:31:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 200 transitions. [2021-08-27 04:31:07,298 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 200 transitions. Word has length 9 [2021-08-27 04:31:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:31:07,299 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 200 transitions. [2021-08-27 04:31:07,299 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) [2021-08-27 04:31:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 200 transitions. [2021-08-27 04:31:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 04:31:07,299 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:31:07,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:31:07,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 04:31:07,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:31:07,501 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:31:07,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:31:07,501 INFO L82 PathProgramCache]: Analyzing trace with hash -890391164, now seen corresponding path program 1 times [2021-08-27 04:31:07,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:31:07,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051601941] [2021-08-27 04:31:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:31:07,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:31:07,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:31:07,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:31:07,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 04:31:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:31:07,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 04:31:07,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:31:08,035 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-08-27 04:31:08,035 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 255 treesize of output 299 [2021-08-27 04:31:12,255 INFO L354 Elim1Store]: treesize reduction 36, result has 41.0 percent of original size [2021-08-27 04:31:12,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 126 [2021-08-27 04:31:20,048 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 137 treesize of output 109 [2021-08-27 04:31:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:21,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:31:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:21,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:31:21,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051601941] [2021-08-27 04:31:21,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051601941] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:31:21,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:31:21,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 04:31:21,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909445802] [2021-08-27 04:31:21,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:31:21,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:31:21,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:31:21,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:31:21,952 INFO L87 Difference]: Start difference. First operand 140 states and 200 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) [2021-08-27 04:31:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:31:23,849 INFO L93 Difference]: Finished difference Result 260 states and 372 transitions. [2021-08-27 04:31:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:31:23,850 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 [2021-08-27 04:31:23,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:31:23,854 INFO L225 Difference]: With dead ends: 260 [2021-08-27 04:31:23,854 INFO L226 Difference]: Without dead ends: 260 [2021-08-27 04:31:23,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 995.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:31:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-08-27 04:31:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 213. [2021-08-27 04:31:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 150 states have (on average 1.5666666666666667) internal successors, (235), 170 states have internal predecessors, (235), 23 states have call successors, (23), 18 states have call predecessors, (23), 22 states have return successors, (59), 24 states have call predecessors, (59), 22 states have call successors, (59) [2021-08-27 04:31:23,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 317 transitions. [2021-08-27 04:31:23,876 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 317 transitions. Word has length 10 [2021-08-27 04:31:23,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:31:23,876 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 317 transitions. [2021-08-27 04:31:23,877 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) [2021-08-27 04:31:23,877 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 317 transitions. [2021-08-27 04:31:23,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 04:31:23,877 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:31:23,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:31:23,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 04:31:24,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:31:24,090 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:31:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:31:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1832322202, now seen corresponding path program 1 times [2021-08-27 04:31:24,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:31:24,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422371078] [2021-08-27 04:31:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:31:24,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:31:24,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:31:24,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:31:24,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 04:31:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:31:24,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 04:31:24,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:31:24,651 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-08-27 04:31:24,652 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 91 treesize of output 124 [2021-08-27 04:31:24,660 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 04:31:24,660 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 171 treesize of output 167 [2021-08-27 04:31:27,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-27 04:31:27,294 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-27 04:31:27,295 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 86 treesize of output 76 [2021-08-27 04:31:31,777 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 [2021-08-27 04:31:31,781 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 [2021-08-27 04:31:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:34,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:31:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:34,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:31:34,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422371078] [2021-08-27 04:31:34,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422371078] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:31:34,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:31:34,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 04:31:34,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329971657] [2021-08-27 04:31:34,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:31:34,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:31:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:31:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:31:34,671 INFO L87 Difference]: Start difference. First operand 213 states and 317 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) [2021-08-27 04:31:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:31:35,996 INFO L93 Difference]: Finished difference Result 394 states and 571 transitions. [2021-08-27 04:31:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 04:31:35,997 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 [2021-08-27 04:31:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:31:36,001 INFO L225 Difference]: With dead ends: 394 [2021-08-27 04:31:36,001 INFO L226 Difference]: Without dead ends: 394 [2021-08-27 04:31:36,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 666.1ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-08-27 04:31:36,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-08-27 04:31:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 319. [2021-08-27 04:31:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 230 states have (on average 1.5521739130434782) internal successors, (357), 255 states have internal predecessors, (357), 34 states have call successors, (34), 27 states have call predecessors, (34), 37 states have return successors, (114), 36 states have call predecessors, (114), 33 states have call successors, (114) [2021-08-27 04:31:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 505 transitions. [2021-08-27 04:31:36,030 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 505 transitions. Word has length 11 [2021-08-27 04:31:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:31:36,030 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 505 transitions. [2021-08-27 04:31:36,030 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) [2021-08-27 04:31:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 505 transitions. [2021-08-27 04:31:36,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 04:31:36,031 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:31:36,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:31:36,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 04:31:36,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:31:36,243 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 04:31:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:31:36,244 INFO L82 PathProgramCache]: Analyzing trace with hash -967413306, now seen corresponding path program 1 times [2021-08-27 04:31:36,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:31:36,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357696654] [2021-08-27 04:31:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:31:36,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:31:36,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:31:36,246 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:31:36,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 04:31:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:31:36,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 04:31:36,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:31:36,723 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-08-27 04:31:36,724 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 91 treesize of output 133 [2021-08-27 04:31:38,975 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 04:31:38,975 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 [2021-08-27 04:31:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:45,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:31:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:31:45,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:31:45,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357696654] [2021-08-27 04:31:45,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357696654] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:31:45,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:31:45,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 04:31:45,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103229526] [2021-08-27 04:31:45,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:31:45,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:31:45,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:31:45,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:31:45,627 INFO L87 Difference]: Start difference. First operand 319 states and 505 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) [2021-08-27 04:31:54,385 WARN L207 SmtUtils]: Spent 8.44 s on a formula simplification that was a NOOP. DAG size: 102 [2021-08-27 04:32:19,114 WARN L224 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-27 04:32:19,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-08-27 04:32:19,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 04:32:19,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:32:19,316 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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:310) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:154) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:152) ... 35 more [2021-08-27 04:32:19,320 INFO L168 Benchmark]: Toolchain (without parser) took 76383.68 ms. Allocated memory was 67.1 MB in the beginning and 176.2 MB in the end (delta: 109.1 MB). Free memory was 45.2 MB in the beginning and 71.9 MB in the end (delta: -26.6 MB). Peak memory consumption was 82.4 MB. Max. memory is 16.1 GB. [2021-08-27 04:32:19,320 INFO L168 Benchmark]: CDTParser took 1.43 ms. Allocated memory is still 67.1 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:32:19,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.04 ms. Allocated memory is still 67.1 MB. Free memory was 45.1 MB in the beginning and 39.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:32:19,321 INFO L168 Benchmark]: Boogie Preprocessor took 96.17 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 35.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:32:19,321 INFO L168 Benchmark]: RCFGBuilder took 692.64 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 35.6 MB in the beginning and 56.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-08-27 04:32:19,322 INFO L168 Benchmark]: TraceAbstraction took 75179.10 ms. Allocated memory was 83.9 MB in the beginning and 176.2 MB in the end (delta: 92.3 MB). Free memory was 56.2 MB in the beginning and 71.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 76.8 MB. Max. memory is 16.1 GB. [2021-08-27 04:32:19,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.43 ms. Allocated memory is still 67.1 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 412.04 ms. Allocated memory is still 67.1 MB. Free memory was 45.1 MB in the beginning and 39.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.17 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 35.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 692.64 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 35.6 MB in the beginning and 56.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 75179.10 ms. Allocated memory was 83.9 MB in the beginning and 176.2 MB in the end (delta: 92.3 MB). Free memory was 56.2 MB in the beginning and 71.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 76.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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:310) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...