./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b33005346e6b80bc2289c235b2b7a5c7f83b2de ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/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_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b33005346e6b80bc2289c235b2b7a5c7f83b2de ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /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 07:52:10,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:52:10,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:52:10,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:52:10,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:52:10,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:52:10,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:52:10,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:52:10,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:52:10,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:52:10,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:52:10,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:52:10,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:52:10,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:52:10,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:52:10,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:52:10,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:52:10,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:52:10,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:52:10,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:52:10,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:52:10,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:52:10,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:52:10,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:52:10,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:52:10,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:52:10,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:52:10,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:52:10,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:52:10,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:52:10,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:52:10,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:52:10,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:52:10,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:52:10,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:52:10,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:52:10,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:52:10,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:52:10,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:52:10,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:52:10,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:52:10,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 07:52:10,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:52:10,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:52:10,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:52:10,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:52:10,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:52:10,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:52:10,518 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:52:10,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:52:10,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:52:10,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:52:10,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:52:10,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:52:10,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:52:10,519 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:52:10,519 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:52:10,519 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:52:10,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:52:10,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:52:10,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:52:10,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:52:10,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:52:10,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:52:10,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:52:10,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:52:10,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:52:10,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:52:10,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 07:52:10,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 07:52:10,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:52:10,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b33005346e6b80bc2289c235b2b7a5c7f83b2de [2021-08-27 07:52:10,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:52:10,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:52:10,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:52:10,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:52:10,777 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:52:10,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-08-27 07:52:10,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1e061ba7/7650ee68180f428a9fdfed0561d88e86/FLAG6059304bb [2021-08-27 07:52:11,263 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:52:11,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-08-27 07:52:11,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1e061ba7/7650ee68180f428a9fdfed0561d88e86/FLAG6059304bb [2021-08-27 07:52:11,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1e061ba7/7650ee68180f428a9fdfed0561d88e86 [2021-08-27 07:52:11,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:52:11,294 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:52:11,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:52:11,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:52:11,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:52:11,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6726c553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11, skipping insertion in model container [2021-08-27 07:52:11,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:52:11,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:52:11,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:52:11,586 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:52:11,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:52:11,645 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:52:11,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11 WrapperNode [2021-08-27 07:52:11,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:52:11,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:52:11,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:52:11,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:52:11,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:52:11,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:52:11,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:52:11,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:52:11,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11" (1/1) ... [2021-08-27 07:52:11,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:52:11,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:11,722 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 07:52:11,737 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 07:52:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:52:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:52:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-08-27 07:52:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 07:52:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 07:52:11,756 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-08-27 07:52:11,756 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-08-27 07:52:11,756 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-08-27 07:52:11,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:52:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 07:52:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 07:52:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 07:52:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 07:52:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 07:52:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 07:52:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 07:52:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 07:52:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 07:52:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 07:52:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 07:52:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 07:52:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 07:52:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 07:52:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 07:52:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 07:52:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 07:52:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 07:52:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 07:52:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 07:52:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 07:52:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 07:52:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 07:52:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 07:52:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 07:52:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 07:52:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 07:52:11,760 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 07:52:11,760 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 07:52:11,760 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 07:52:11,760 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 07:52:11,760 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 07:52:11,760 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 07:52:11,760 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 07:52:11,760 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 07:52:11,760 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 07:52:11,761 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 07:52:11,761 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 07:52:11,761 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 07:52:11,761 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 07:52:11,761 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 07:52:11,761 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 07:52:11,761 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 07:52:11,761 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 07:52:11,762 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 07:52:11,762 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 07:52:11,762 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 07:52:11,762 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 07:52:11,762 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 07:52:11,762 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 07:52:11,762 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 07:52:11,762 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 07:52:11,762 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 07:52:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 07:52:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 07:52:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 07:52:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 07:52:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 07:52:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 07:52:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 07:52:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 07:52:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:52:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 07:52:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 07:52:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 07:52:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 07:52:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 07:52:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 07:52:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 07:52:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 07:52:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 07:52:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 07:52:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 07:52:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 07:52:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 07:52:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 07:52:11,772 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 07:52:11,772 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 07:52:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 07:52:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 07:52:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 07:52:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 07:52:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 07:52:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 07:52:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 07:52:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 07:52:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 07:52:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 07:52:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 07:52:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 07:52:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 07:52:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 07:52:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 07:52:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 07:52:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 07:52:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 07:52:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 07:52:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 07:52:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 07:52:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 07:52:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 07:52:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 07:52:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 07:52:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 07:52:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 07:52:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 07:52:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 07:52:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-08-27 07:52:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:52:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 07:52:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 07:52:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:52:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 07:52:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 07:52:12,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:52:12,258 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 07:52:12,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:52:12 BoogieIcfgContainer [2021-08-27 07:52:12,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:52:12,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:52:12,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:52:12,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:52:12,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:52:11" (1/3) ... [2021-08-27 07:52:12,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786f12f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:52:12, skipping insertion in model container [2021-08-27 07:52:12,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:11" (2/3) ... [2021-08-27 07:52:12,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786f12f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:52:12, skipping insertion in model container [2021-08-27 07:52:12,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:52:12" (3/3) ... [2021-08-27 07:52:12,266 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-08-27 07:52:12,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:52:12,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-08-27 07:52:12,305 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:52:12,310 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 07:52:12,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-08-27 07:52:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-27 07:52:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:52:12,329 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:12,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:12,329 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:12,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:12,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1891287210, now seen corresponding path program 1 times [2021-08-27 07:52:12,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:12,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73126398] [2021-08-27 07:52:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:12,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:12,655 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 07:52:12,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:12,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73126398] [2021-08-27 07:52:12,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73126398] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:12,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:12,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 07:52:12,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498073694] [2021-08-27 07:52:12,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:52:12,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:12,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:52:12,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:52:12,671 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:12,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:12,974 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-08-27 07:52:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:52:12,975 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 07:52:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:12,984 INFO L225 Difference]: With dead ends: 106 [2021-08-27 07:52:12,984 INFO L226 Difference]: Without dead ends: 97 [2021-08-27 07:52:12,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:12,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-08-27 07:52:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2021-08-27 07:52:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 50 states have (on average 1.58) internal successors, (79), 73 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2021-08-27 07:52:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2021-08-27 07:52:13,029 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 9 [2021-08-27 07:52:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:13,029 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2021-08-27 07:52:13,030 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 07:52:13,030 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2021-08-27 07:52:13,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:52:13,031 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:13,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:13,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 07:52:13,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:13,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1891287209, now seen corresponding path program 1 times [2021-08-27 07:52:13,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:13,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743017640] [2021-08-27 07:52:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:13,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:13,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:13,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:13,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743017640] [2021-08-27 07:52:13,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743017640] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:13,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:13,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:52:13,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93524808] [2021-08-27 07:52:13,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 07:52:13,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 07:52:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:13,207 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:13,692 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2021-08-27 07:52:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:52:13,693 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 07:52:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:13,694 INFO L225 Difference]: With dead ends: 175 [2021-08-27 07:52:13,694 INFO L226 Difference]: Without dead ends: 175 [2021-08-27 07:52:13,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 138.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:13,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-08-27 07:52:13,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2021-08-27 07:52:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 115 states have internal predecessors, (149), 17 states have call successors, (17), 11 states have call predecessors, (17), 14 states have return successors, (47), 17 states have call predecessors, (47), 16 states have call successors, (47) [2021-08-27 07:52:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 213 transitions. [2021-08-27 07:52:13,706 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 213 transitions. Word has length 9 [2021-08-27 07:52:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:13,706 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 213 transitions. [2021-08-27 07:52:13,706 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 07:52:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 213 transitions. [2021-08-27 07:52:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 07:52:13,706 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:13,707 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:13,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 07:52:13,707 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:13,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1499638660, now seen corresponding path program 1 times [2021-08-27 07:52:13,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:13,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249969658] [2021-08-27 07:52:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:13,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:13,969 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 07:52:13,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:13,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249969658] [2021-08-27 07:52:13,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249969658] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:13,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:13,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 07:52:13,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101734361] [2021-08-27 07:52:13,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:52:13,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:13,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:52:13,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 07:52:13,973 INFO L87 Difference]: Start difference. First operand 144 states and 213 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:14,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:14,731 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-08-27 07:52:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:52:14,731 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 07:52:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:14,733 INFO L225 Difference]: With dead ends: 262 [2021-08-27 07:52:14,734 INFO L226 Difference]: Without dead ends: 262 [2021-08-27 07:52:14,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 327.1ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-08-27 07:52:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-08-27 07:52:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6170212765957446) internal successors, (228), 165 states have internal predecessors, (228), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-08-27 07:52:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 306 transitions. [2021-08-27 07:52:14,745 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 306 transitions. Word has length 10 [2021-08-27 07:52:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:14,745 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 306 transitions. [2021-08-27 07:52:14,745 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 07:52:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 306 transitions. [2021-08-27 07:52:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 07:52:14,746 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:14,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:14,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 07:52:14,746 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:14,747 INFO L82 PathProgramCache]: Analyzing trace with hash -755841706, now seen corresponding path program 1 times [2021-08-27 07:52:14,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:14,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27887116] [2021-08-27 07:52:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:14,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:14,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:15,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:15,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27887116] [2021-08-27 07:52:15,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27887116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:15,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:15,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 07:52:15,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187924095] [2021-08-27 07:52:15,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:52:15,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:52:15,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:15,018 INFO L87 Difference]: Start difference. First operand 202 states and 306 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:15,795 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2021-08-27 07:52:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:52:15,806 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 07:52:15,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:15,807 INFO L225 Difference]: With dead ends: 236 [2021-08-27 07:52:15,807 INFO L226 Difference]: Without dead ends: 236 [2021-08-27 07:52:15,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 383.1ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:15,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-08-27 07:52:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 202. [2021-08-27 07:52:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6028368794326242) internal successors, (226), 165 states have internal predecessors, (226), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-08-27 07:52:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-08-27 07:52:15,820 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 11 [2021-08-27 07:52:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:15,821 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-08-27 07:52:15,821 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 07:52:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2021-08-27 07:52:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 07:52:15,822 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:15,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:15,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 07:52:15,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:15,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:15,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1956256314, now seen corresponding path program 1 times [2021-08-27 07:52:15,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:15,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085659589] [2021-08-27 07:52:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:15,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:15,976 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 07:52:15,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:15,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085659589] [2021-08-27 07:52:15,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085659589] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:15,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:15,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 07:52:15,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560140629] [2021-08-27 07:52:15,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:52:15,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:52:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:15,979 INFO L87 Difference]: Start difference. First operand 202 states and 304 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:16,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:16,645 INFO L93 Difference]: Finished difference Result 287 states and 397 transitions. [2021-08-27 07:52:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:52:16,647 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 07:52:16,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:16,648 INFO L225 Difference]: With dead ends: 287 [2021-08-27 07:52:16,648 INFO L226 Difference]: Without dead ends: 287 [2021-08-27 07:52:16,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 294.8ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:52:16,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-08-27 07:52:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 233. [2021-08-27 07:52:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 195 states have internal predecessors, (269), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 07:52:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2021-08-27 07:52:16,668 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 12 [2021-08-27 07:52:16,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:16,668 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2021-08-27 07:52:16,669 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 07:52:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2021-08-27 07:52:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 07:52:16,669 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:16,669 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:16,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 07:52:16,670 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:16,670 INFO L82 PathProgramCache]: Analyzing trace with hash -514403496, now seen corresponding path program 1 times [2021-08-27 07:52:16,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:16,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269206524] [2021-08-27 07:52:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:16,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:16,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:16,825 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 07:52:16,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:16,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269206524] [2021-08-27 07:52:16,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269206524] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:16,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:16,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 07:52:16,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487014795] [2021-08-27 07:52:16,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:52:16,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:16,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:52:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:16,827 INFO L87 Difference]: Start difference. First operand 233 states and 348 transitions. Second operand has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:17,456 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2021-08-27 07:52:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:52:17,457 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 07:52:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:17,458 INFO L225 Difference]: With dead ends: 265 [2021-08-27 07:52:17,458 INFO L226 Difference]: Without dead ends: 265 [2021-08-27 07:52:17,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 329.7ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:52:17,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-08-27 07:52:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 233. [2021-08-27 07:52:17,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5705882352941176) internal successors, (267), 195 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 07:52:17,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2021-08-27 07:52:17,475 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 13 [2021-08-27 07:52:17,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:17,475 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2021-08-27 07:52:17,476 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 07:52:17,476 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2021-08-27 07:52:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 07:52:17,476 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:17,476 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:17,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 07:52:17,477 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:17,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:17,478 INFO L82 PathProgramCache]: Analyzing trace with hash -389968098, now seen corresponding path program 1 times [2021-08-27 07:52:17,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:17,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802756077] [2021-08-27 07:52:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:17,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:17,612 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 07:52:17,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:17,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802756077] [2021-08-27 07:52:17,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802756077] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:17,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019231208] [2021-08-27 07:52:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:17,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:17,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:17,615 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 07:52:17,648 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 07:52:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:17,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 07:52:17,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:17,980 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-08-27 07:52:17,981 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 07:52:18,207 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 07:52:18,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019231208] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:18,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:18,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-08-27 07:52:18,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128243383] [2021-08-27 07:52:18,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:52:18,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:18,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:52:18,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:52:18,210 INFO L87 Difference]: Start difference. First operand 233 states and 346 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:18,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:18,776 INFO L93 Difference]: Finished difference Result 267 states and 370 transitions. [2021-08-27 07:52:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:52:18,776 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 07:52:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:18,778 INFO L225 Difference]: With dead ends: 267 [2021-08-27 07:52:18,778 INFO L226 Difference]: Without dead ends: 267 [2021-08-27 07:52:18,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 221.3ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:52:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-08-27 07:52:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 237. [2021-08-27 07:52:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 174 states have (on average 1.5114942528735633) internal successors, (263), 199 states have internal predecessors, (263), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 07:52:18,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2021-08-27 07:52:18,785 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 17 [2021-08-27 07:52:18,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:18,785 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2021-08-27 07:52:18,786 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 07:52:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2021-08-27 07:52:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 07:52:18,786 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:18,786 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:18,808 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 07:52:19,000 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 07:52:19,001 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:19,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:19,001 INFO L82 PathProgramCache]: Analyzing trace with hash 795890845, now seen corresponding path program 1 times [2021-08-27 07:52:19,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:19,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410960725] [2021-08-27 07:52:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:19,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:19,262 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 07:52:19,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:19,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410960725] [2021-08-27 07:52:19,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410960725] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:19,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271136541] [2021-08-27 07:52:19,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:19,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:19,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:19,269 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 07:52:19,270 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 07:52:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:19,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 07:52:19,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:19,608 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-08-27 07:52:19,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 74 treesize of output 108 [2021-08-27 07:52:26,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 66 [2021-08-27 07:52:26,809 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 07:52:26,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271136541] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:26,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:26,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-08-27 07:52:26,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995890573] [2021-08-27 07:52:26,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:52:26,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:52:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:52:26,811 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:52:28,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:28,475 INFO L93 Difference]: Finished difference Result 294 states and 408 transitions. [2021-08-27 07:52:28,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 07:52:28,476 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-08-27 07:52:28,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:28,477 INFO L225 Difference]: With dead ends: 294 [2021-08-27 07:52:28,478 INFO L226 Difference]: Without dead ends: 294 [2021-08-27 07:52:28,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 721.7ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-08-27 07:52:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-08-27 07:52:28,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2021-08-27 07:52:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.5) internal successors, (270), 205 states have internal predecessors, (270), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 07:52:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 349 transitions. [2021-08-27 07:52:28,484 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 349 transitions. Word has length 18 [2021-08-27 07:52:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:28,485 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 349 transitions. [2021-08-27 07:52:28,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:52:28,485 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 349 transitions. [2021-08-27 07:52:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 07:52:28,485 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:28,486 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:28,507 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 07:52:28,705 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 07:52:28,705 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:28,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:28,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1097187491, now seen corresponding path program 1 times [2021-08-27 07:52:28,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:28,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306412703] [2021-08-27 07:52:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:28,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:29,027 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 07:52:29,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:29,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306412703] [2021-08-27 07:52:29,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306412703] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:29,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466110088] [2021-08-27 07:52:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:29,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:29,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:29,033 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 07:52:29,061 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 07:52:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:29,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 07:52:29,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:29,392 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-08-27 07:52:29,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 83 [2021-08-27 07:52:29,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 164 [2021-08-27 07:52:31,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 62 [2021-08-27 07:52:31,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-08-27 07:52:31,936 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 07:52:31,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466110088] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:31,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:31,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-08-27 07:52:31,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588163321] [2021-08-27 07:52:31,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 07:52:31,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 07:52:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:52:31,938 INFO L87 Difference]: Start difference. First operand 243 states and 349 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:52:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:33,012 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2021-08-27 07:52:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 07:52:33,013 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 07:52:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:33,014 INFO L225 Difference]: With dead ends: 272 [2021-08-27 07:52:33,014 INFO L226 Difference]: Without dead ends: 272 [2021-08-27 07:52:33,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 630.8ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-08-27 07:52:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-08-27 07:52:33,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2021-08-27 07:52:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 205 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 07:52:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 346 transitions. [2021-08-27 07:52:33,021 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 346 transitions. Word has length 19 [2021-08-27 07:52:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:33,021 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 346 transitions. [2021-08-27 07:52:33,021 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 07:52:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 346 transitions. [2021-08-27 07:52:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 07:52:33,022 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:33,022 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 07:52:33,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:33,236 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 07:52:33,237 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:33,237 INFO L82 PathProgramCache]: Analyzing trace with hash -321978897, now seen corresponding path program 1 times [2021-08-27 07:52:33,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:33,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901399372] [2021-08-27 07:52:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:33,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:33,305 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 07:52:33,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:33,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901399372] [2021-08-27 07:52:33,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901399372] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:33,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:33,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 07:52:33,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270234490] [2021-08-27 07:52:33,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:52:33,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:33,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:52:33,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:52:33,306 INFO L87 Difference]: Start difference. First operand 243 states and 346 transitions. Second operand has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:33,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:33,514 INFO L93 Difference]: Finished difference Result 352 states and 523 transitions. [2021-08-27 07:52:33,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:52:33,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-27 07:52:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:33,518 INFO L225 Difference]: With dead ends: 352 [2021-08-27 07:52:33,518 INFO L226 Difference]: Without dead ends: 352 [2021-08-27 07:52:33,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:33,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-08-27 07:52:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 338. [2021-08-27 07:52:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 254 states have (on average 1.5) internal successors, (381), 282 states have internal predecessors, (381), 30 states have call successors, (30), 25 states have call predecessors, (30), 33 states have return successors, (110), 30 states have call predecessors, (110), 29 states have call successors, (110) [2021-08-27 07:52:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 521 transitions. [2021-08-27 07:52:33,535 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 521 transitions. Word has length 23 [2021-08-27 07:52:33,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:33,536 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 521 transitions. [2021-08-27 07:52:33,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 521 transitions. [2021-08-27 07:52:33,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 07:52:33,538 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:33,538 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 07:52:33,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 07:52:33,539 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting c2Err3ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:33,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:33,539 INFO L82 PathProgramCache]: Analyzing trace with hash -321978673, now seen corresponding path program 1 times [2021-08-27 07:52:33,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:33,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463097657] [2021-08-27 07:52:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:33,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:33,625 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 07:52:33,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:33,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463097657] [2021-08-27 07:52:33,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463097657] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:33,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:33,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:52:33,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034072624] [2021-08-27 07:52:33,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:52:33,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:33,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:52:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:52:33,627 INFO L87 Difference]: Start difference. First operand 338 states and 521 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:33,829 INFO L93 Difference]: Finished difference Result 391 states and 559 transitions. [2021-08-27 07:52:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:52:33,829 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 07:52:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:33,832 INFO L225 Difference]: With dead ends: 391 [2021-08-27 07:52:33,832 INFO L226 Difference]: Without dead ends: 391 [2021-08-27 07:52:33,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-08-27 07:52:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2021-08-27 07:52:33,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4858156028368794) internal successors, (419), 311 states have internal predecessors, (419), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-08-27 07:52:33,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 553 transitions. [2021-08-27 07:52:33,841 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 553 transitions. Word has length 23 [2021-08-27 07:52:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:33,841 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 553 transitions. [2021-08-27 07:52:33,841 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 07:52:33,842 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 553 transitions. [2021-08-27 07:52:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 07:52:33,845 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:33,845 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:33,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 07:52:33,846 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting c2Err1ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1391411157, now seen corresponding path program 1 times [2021-08-27 07:52:33,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:33,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760216344] [2021-08-27 07:52:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:33,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:33,917 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 07:52:33,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:33,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760216344] [2021-08-27 07:52:33,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760216344] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:33,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:33,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 07:52:33,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342496300] [2021-08-27 07:52:33,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:52:33,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:52:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:52:33,919 INFO L87 Difference]: Start difference. First operand 375 states and 553 transitions. Second operand has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:34,175 INFO L93 Difference]: Finished difference Result 390 states and 557 transitions. [2021-08-27 07:52:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:52:34,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-08-27 07:52:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:34,177 INFO L225 Difference]: With dead ends: 390 [2021-08-27 07:52:34,177 INFO L226 Difference]: Without dead ends: 390 [2021-08-27 07:52:34,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:34,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-08-27 07:52:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2021-08-27 07:52:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4787234042553192) internal successors, (417), 311 states have internal predecessors, (417), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-08-27 07:52:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 551 transitions. [2021-08-27 07:52:34,186 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 551 transitions. Word has length 24 [2021-08-27 07:52:34,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:34,187 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 551 transitions. [2021-08-27 07:52:34,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:52:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 551 transitions. [2021-08-27 07:52:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 07:52:34,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:34,190 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 07:52:34,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-27 07:52:34,190 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:34,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:34,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1350782223, now seen corresponding path program 1 times [2021-08-27 07:52:34,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:34,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998834082] [2021-08-27 07:52:34,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:34,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:34,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:34,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:52:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:52:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:34,269 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 07:52:34,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:34,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998834082] [2021-08-27 07:52:34,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998834082] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:34,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:34,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 07:52:34,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806512423] [2021-08-27 07:52:34,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 07:52:34,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 07:52:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:34,273 INFO L87 Difference]: Start difference. First operand 375 states and 551 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 07:52:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:34,419 INFO L93 Difference]: Finished difference Result 284 states and 399 transitions. [2021-08-27 07:52:34,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:52:34,420 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 07:52:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:34,421 INFO L225 Difference]: With dead ends: 284 [2021-08-27 07:52:34,421 INFO L226 Difference]: Without dead ends: 284 [2021-08-27 07:52:34,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-08-27 07:52:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-08-27 07:52:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 213 states have (on average 1.4507042253521127) internal successors, (309), 238 states have internal predecessors, (309), 26 states have call successors, (26), 23 states have call predecessors, (26), 24 states have return successors, (64), 22 states have call predecessors, (64), 25 states have call successors, (64) [2021-08-27 07:52:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 399 transitions. [2021-08-27 07:52:34,427 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 399 transitions. Word has length 33 [2021-08-27 07:52:34,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:34,428 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 399 transitions. [2021-08-27 07:52:34,428 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 07:52:34,428 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 399 transitions. [2021-08-27 07:52:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 07:52:34,429 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:34,429 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 07:52:34,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-27 07:52:34,430 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:52:34,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:34,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1784623764, now seen corresponding path program 1 times [2021-08-27 07:52:34,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:34,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639071157] [2021-08-27 07:52:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:34,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:34,577 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 07:52:34,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:34,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639071157] [2021-08-27 07:52:34,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639071157] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:34,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485454784] [2021-08-27 07:52:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:34,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:34,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:34,580 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 07:52:34,591 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 07:52:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:34,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 07:52:34,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:35,024 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-08-27 07:52:35,024 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 07:52:36,122 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-08-27 07:52:36,123 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 07:52:38,030 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 07:52:38,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485454784] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:38,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:38,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-08-27 07:52:38,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844623055] [2021-08-27 07:52:38,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:52:38,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:38,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:52:38,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:52:38,031 INFO L87 Difference]: Start difference. First operand 284 states and 399 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 07:52:47,297 WARN L207 SmtUtils]: Spent 8.24 s on a formula simplification that was a NOOP. DAG size: 97 [2021-08-27 07:53:01,672 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 07:53:01,682 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 07:53:01,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:01,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:01,891 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 07:53:01,894 INFO L168 Benchmark]: Toolchain (without parser) took 50600.74 ms. Allocated memory was 52.4 MB in the beginning and 318.8 MB in the end (delta: 266.3 MB). Free memory was 28.4 MB in the beginning and 171.1 MB in the end (delta: -142.7 MB). Peak memory consumption was 124.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:01,895 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:53:01,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.66 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 28.2 MB in the beginning and 44.1 MB in the end (delta: -16.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:01,895 INFO L168 Benchmark]: Boogie Preprocessor took 45.77 ms. Allocated memory is still 69.2 MB. Free memory was 44.1 MB in the beginning and 40.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:01,895 INFO L168 Benchmark]: RCFGBuilder took 566.33 ms. Allocated memory is still 69.2 MB. Free memory was 40.7 MB in the beginning and 44.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:01,895 INFO L168 Benchmark]: TraceAbstraction took 49632.02 ms. Allocated memory was 69.2 MB in the beginning and 318.8 MB in the end (delta: 249.6 MB). Free memory was 43.9 MB in the beginning and 171.1 MB in the end (delta: -127.2 MB). Peak memory consumption was 124.7 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:01,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.66 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 28.2 MB in the beginning and 44.1 MB in the end (delta: -16.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.77 ms. Allocated memory is still 69.2 MB. Free memory was 44.1 MB in the beginning and 40.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 566.33 ms. Allocated memory is still 69.2 MB. Free memory was 40.7 MB in the beginning and 44.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 49632.02 ms. Allocated memory was 69.2 MB in the beginning and 318.8 MB in the end (delta: 249.6 MB). Free memory was 43.9 MB in the beginning and 171.1 MB in the end (delta: -127.2 MB). Peak memory consumption was 124.7 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 07:53:03,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:53:03,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:53:03,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:53:03,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:53:03,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:53:03,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:53:03,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:53:03,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:53:03,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:53:03,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:53:03,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:53:03,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:53:03,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:53:03,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:53:03,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:53:03,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:53:03,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:53:03,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:53:03,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:53:03,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:53:03,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:53:03,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:53:03,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:53:03,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:53:03,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:53:03,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:53:03,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:53:03,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:53:03,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:53:03,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:53:03,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:53:03,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:53:03,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:53:03,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:53:03,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:53:03,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:53:03,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:53:03,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:53:03,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:53:03,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:53:03,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 07:53:03,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:53:03,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:53:03,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:53:03,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:53:03,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:53:03,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:53:03,299 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:53:03,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:53:03,299 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:53:03,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:53:03,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:53:03,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:53:03,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:53:03,301 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:53:03,301 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:53:03,301 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:53:03,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:53:03,301 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:53:03,301 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 07:53:03,302 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 07:53:03,302 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:53:03,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:53:03,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:53:03,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:53:03,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:53:03,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:53:03,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:53:03,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:53:03,303 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 07:53:03,303 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 07:53:03,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:53:03,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 07:53:03,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b33005346e6b80bc2289c235b2b7a5c7f83b2de [2021-08-27 07:53:03,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:53:03,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:53:03,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:53:03,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:53:03,583 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:53:03,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-08-27 07:53:03,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5ec5f92/c14de08f70194280857ca1f29312d541/FLAGa3fa326ac [2021-08-27 07:53:04,046 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:53:04,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-08-27 07:53:04,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5ec5f92/c14de08f70194280857ca1f29312d541/FLAGa3fa326ac [2021-08-27 07:53:04,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5ec5f92/c14de08f70194280857ca1f29312d541 [2021-08-27 07:53:04,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:53:04,069 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:53:04,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:53:04,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:53:04,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:53:04,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a138621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04, skipping insertion in model container [2021-08-27 07:53:04,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:53:04,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:53:04,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:53:04,369 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:53:04,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:53:04,449 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:53:04,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04 WrapperNode [2021-08-27 07:53:04,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:53:04,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:53:04,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:53:04,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:53:04,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:53:04,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:53:04,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:53:04,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:53:04,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04" (1/1) ... [2021-08-27 07:53:04,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:53:04,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:04,558 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 07:53:04,588 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 07:53:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:53:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:53:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-08-27 07:53:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 07:53:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 07:53:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 07:53:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-08-27 07:53:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-08-27 07:53:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-08-27 07:53:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 07:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 07:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 07:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 07:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 07:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 07:53:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 07:53:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 07:53:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 07:53:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 07:53:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 07:53:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 07:53:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 07:53:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 07:53:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 07:53:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 07:53:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 07:53:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 07:53:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 07:53:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 07:53:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 07:53:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 07:53:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 07:53:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 07:53:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 07:53:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 07:53:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 07:53:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 07:53:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 07:53:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 07:53:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 07:53:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 07:53:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 07:53:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 07:53:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 07:53:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 07:53:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 07:53:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 07:53:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 07:53:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 07:53:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 07:53:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 07:53:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 07:53:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 07:53:04,632 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 07:53:04,632 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 07:53:04,632 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 07:53:04,632 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 07:53:04,632 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 07:53:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 07:53:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 07:53:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 07:53:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 07:53:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 07:53:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 07:53:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 07:53:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 07:53:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 07:53:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 07:53:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 07:53:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 07:53:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:53:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 07:53:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 07:53:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 07:53:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 07:53:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 07:53:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 07:53:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 07:53:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 07:53:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 07:53:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 07:53:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 07:53:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 07:53:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 07:53:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 07:53:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 07:53:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 07:53:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 07:53:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 07:53:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 07:53:04,639 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 07:53:04,639 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 07:53:04,639 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 07:53:04,639 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 07:53:04,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 07:53:04,639 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 07:53:04,639 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 07:53:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 07:53:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 07:53:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 07:53:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 07:53:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 07:53:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 07:53:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 07:53:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 07:53:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 07:53:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 07:53:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 07:53:04,642 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 07:53:04,642 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 07:53:04,642 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 07:53:04,642 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 07:53:04,642 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 07:53:04,642 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 07:53:04,643 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 07:53:04,643 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 07:53:04,643 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 07:53:04,643 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 07:53:04,643 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 07:53:04,643 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 07:53:04,643 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 07:53:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 07:53:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 07:53:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 07:53:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 07:53:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 07:53:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 07:53:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 07:53:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 07:53:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 07:53:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 07:53:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 07:53:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 07:53:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 07:53:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 07:53:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 07:53:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 07:53:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 07:53:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 07:53:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 07:53:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 07:53:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 07:53:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 07:53:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 07:53:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 07:53:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 07:53:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-08-27 07:53:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 07:53:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 07:53:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 07:53:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 07:53:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 07:53:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 07:53:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 07:53:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 07:53:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 07:53:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 07:53:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 07:53:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 07:53:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 07:53:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 07:53:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-08-27 07:53:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-08-27 07:53:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:53:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-08-27 07:53:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-08-27 07:53:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 07:53:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 07:53:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 07:53:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:53:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:53:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:53:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 07:53:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 07:53:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:53:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 07:53:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 07:53:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 07:53:05,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:53:05,451 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 07:53:05,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:53:05 BoogieIcfgContainer [2021-08-27 07:53:05,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:53:05,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:53:05,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:53:05,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:53:05,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:53:04" (1/3) ... [2021-08-27 07:53:05,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2d34c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:53:05, skipping insertion in model container [2021-08-27 07:53:05,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:04" (2/3) ... [2021-08-27 07:53:05,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2d34c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:53:05, skipping insertion in model container [2021-08-27 07:53:05,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:53:05" (3/3) ... [2021-08-27 07:53:05,463 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-08-27 07:53:05,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:53:05,468 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-08-27 07:53:05,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:53:05,521 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 07:53:05,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-08-27 07:53:05,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-27 07:53:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:53:05,557 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:05,557 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:05,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:53:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:05,561 INFO L82 PathProgramCache]: Analyzing trace with hash -317410196, now seen corresponding path program 1 times [2021-08-27 07:53:05,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:05,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253989698] [2021-08-27 07:53:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:05,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:05,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:05,571 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 07:53:05,572 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 07:53:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:05,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:53:05,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:06,185 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-08-27 07:53:06,189 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 07:53:06,779 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 07:53:06,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:53:06,842 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 07:53:06,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:53:06,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253989698] [2021-08-27 07:53:06,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253989698] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:06,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:53:06,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 07:53:06,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471450752] [2021-08-27 07:53:06,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:53:06,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:53:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:53:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:53:06,858 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:53:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:06,966 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2021-08-27 07:53:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:53:06,968 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 07:53:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:06,975 INFO L225 Difference]: With dead ends: 97 [2021-08-27 07:53:06,975 INFO L226 Difference]: Without dead ends: 91 [2021-08-27 07:53:06,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:53:06,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-27 07:53:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-08-27 07:53:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 69 states have internal predecessors, (77), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2021-08-27 07:53:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-08-27 07:53:07,006 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 9 [2021-08-27 07:53:07,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:07,007 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-08-27 07:53:07,007 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 07:53:07,007 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-08-27 07:53:07,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:53:07,008 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:07,008 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:07,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-27 07:53:07,215 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 07:53:07,216 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:53:07,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:07,218 INFO L82 PathProgramCache]: Analyzing trace with hash -317410195, now seen corresponding path program 1 times [2021-08-27 07:53:07,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:07,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892897243] [2021-08-27 07:53:07,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:07,219 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:07,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:07,220 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 07:53:07,223 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 07:53:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:07,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 07:53:07,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:07,583 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-08-27 07:53:07,583 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 07:53:07,731 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 07:53:07,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:53:07,941 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 07:53:07,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:53:07,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892897243] [2021-08-27 07:53:07,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892897243] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:07,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:53:07,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-27 07:53:07,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756970444] [2021-08-27 07:53:07,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:53:07,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:53:07,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:53:07,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-27 07:53:07,943 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:53:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:08,314 INFO L93 Difference]: Finished difference Result 174 states and 228 transitions. [2021-08-27 07:53:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:53:08,315 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 07:53:08,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:08,316 INFO L225 Difference]: With dead ends: 174 [2021-08-27 07:53:08,316 INFO L226 Difference]: Without dead ends: 174 [2021-08-27 07:53:08,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:53:08,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-08-27 07:53:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-08-27 07:53:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 93 states have (on average 1.6236559139784945) internal successors, (151), 114 states have internal predecessors, (151), 16 states have call successors, (16), 11 states have call predecessors, (16), 12 states have return successors, (38), 16 states have call predecessors, (38), 15 states have call successors, (38) [2021-08-27 07:53:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2021-08-27 07:53:08,344 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 9 [2021-08-27 07:53:08,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:08,344 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2021-08-27 07:53:08,344 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 07:53:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2021-08-27 07:53:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 07:53:08,344 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:08,345 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:08,354 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 07:53:08,545 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 07:53:08,546 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:53:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1249781436, now seen corresponding path program 1 times [2021-08-27 07:53:08,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:08,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245399196] [2021-08-27 07:53:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:08,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:08,548 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 07:53:08,549 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 07:53:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:08,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 07:53:08,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:08,965 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-08-27 07:53:08,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 234 treesize of output 278 [2021-08-27 07:53:12,831 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-08-27 07:53:12,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 118 [2021-08-27 07:53:18,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 105 [2021-08-27 07:53:19,622 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 07:53:19,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:53:19,890 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 07:53:19,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:53:19,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245399196] [2021-08-27 07:53:19,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245399196] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:19,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:53:19,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 07:53:19,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922707326] [2021-08-27 07:53:19,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:53:19,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:53:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:53:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:53:19,892 INFO L87 Difference]: Start difference. First operand 142 states and 205 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:53:21,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:21,725 INFO L93 Difference]: Finished difference Result 261 states and 376 transitions. [2021-08-27 07:53:21,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:53:21,726 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 07:53:21,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:21,728 INFO L225 Difference]: With dead ends: 261 [2021-08-27 07:53:21,728 INFO L226 Difference]: Without dead ends: 261 [2021-08-27 07:53:21,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1076.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:53:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-08-27 07:53:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 202. [2021-08-27 07:53:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 144 states have (on average 1.6180555555555556) internal successors, (233), 165 states have internal predecessors, (233), 21 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (51), 20 states have call predecessors, (51), 20 states have call successors, (51) [2021-08-27 07:53:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2021-08-27 07:53:21,742 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 10 [2021-08-27 07:53:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:21,742 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2021-08-27 07:53:21,742 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 07:53:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2021-08-27 07:53:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 07:53:21,743 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:21,743 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:21,755 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 07:53:21,953 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 07:53:21,954 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:53:21,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:21,954 INFO L82 PathProgramCache]: Analyzing trace with hash -88518740, now seen corresponding path program 1 times [2021-08-27 07:53:21,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:21,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023538926] [2021-08-27 07:53:21,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:21,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:21,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:21,957 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 07:53:21,958 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 07:53:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:22,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 07:53:22,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:22,435 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-08-27 07:53:22,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 117 [2021-08-27 07:53:22,445 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 07:53:22,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 451 treesize of output 433 [2021-08-27 07:53:24,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-27 07:53:24,864 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-27 07:53:24,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 72 [2021-08-27 07:53:28,963 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 07:53:28,967 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 07:53:31,324 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 07:53:31,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:53:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:31,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:53:31,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023538926] [2021-08-27 07:53:31,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023538926] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:31,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:53:31,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 07:53:31,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304212478] [2021-08-27 07:53:31,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:53:31,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:53:31,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:53:31,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:53:31,841 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:53:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:33,184 INFO L93 Difference]: Finished difference Result 379 states and 540 transitions. [2021-08-27 07:53:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:53:33,185 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 07:53:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:33,187 INFO L225 Difference]: With dead ends: 379 [2021-08-27 07:53:33,187 INFO L226 Difference]: Without dead ends: 379 [2021-08-27 07:53:33,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 539.3ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:53:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-08-27 07:53:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 304. [2021-08-27 07:53:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 223 states have (on average 1.5964125560538116) internal successors, (356), 247 states have internal predecessors, (356), 31 states have call successors, (31), 24 states have call predecessors, (31), 29 states have return successors, (99), 32 states have call predecessors, (99), 30 states have call successors, (99) [2021-08-27 07:53:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 486 transitions. [2021-08-27 07:53:33,205 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 486 transitions. Word has length 11 [2021-08-27 07:53:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:33,205 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 486 transitions. [2021-08-27 07:53:33,206 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 07:53:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 486 transitions. [2021-08-27 07:53:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 07:53:33,206 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:33,206 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:33,225 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 07:53:33,425 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 07:53:33,427 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 07:53:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:33,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1550886470, now seen corresponding path program 1 times [2021-08-27 07:53:33,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:33,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749297994] [2021-08-27 07:53:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:33,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:33,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:33,429 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 07:53:33,430 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 07:53:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:33,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 07:53:33,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:33,874 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-08-27 07:53:33,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 150 treesize of output 190 [2021-08-27 07:53:35,881 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:53:35,881 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 07:53:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:42,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:53:42,311 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 07:53:42,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:53:42,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749297994] [2021-08-27 07:53:42,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749297994] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:42,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:53:42,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 07:53:42,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776634636] [2021-08-27 07:53:42,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:53:42,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:53:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:53:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:53:42,313 INFO L87 Difference]: Start difference. First operand 304 states and 486 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:53:51,031 WARN L207 SmtUtils]: Spent 8.48 s on a formula simplification that was a NOOP. DAG size: 102 [2021-08-27 07:54:16,856 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 07:54:16,864 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 07:54:16,865 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 07:54:17,057 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 07:54:17,057 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 07:54:17,059 INFO L168 Benchmark]: Toolchain (without parser) took 72990.14 ms. Allocated memory was 54.5 MB in the beginning and 188.7 MB in the end (delta: 134.2 MB). Free memory was 31.5 MB in the beginning and 68.8 MB in the end (delta: -37.3 MB). Peak memory consumption was 97.3 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:17,059 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.3 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:54:17,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.54 ms. Allocated memory is still 54.5 MB. Free memory was 31.4 MB in the beginning and 28.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:17,060 INFO L168 Benchmark]: Boogie Preprocessor took 76.35 ms. Allocated memory is still 54.5 MB. Free memory was 28.1 MB in the beginning and 24.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:17,060 INFO L168 Benchmark]: RCFGBuilder took 925.60 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 24.5 MB in the beginning and 35.0 MB in the end (delta: -10.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:17,060 INFO L168 Benchmark]: TraceAbstraction took 71601.55 ms. Allocated memory was 71.3 MB in the beginning and 188.7 MB in the end (delta: 117.4 MB). Free memory was 34.6 MB in the beginning and 68.8 MB in the end (delta: -34.2 MB). Peak memory consumption was 83.5 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:17,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.3 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.54 ms. Allocated memory is still 54.5 MB. Free memory was 31.4 MB in the beginning and 28.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.35 ms. Allocated memory is still 54.5 MB. Free memory was 28.1 MB in the beginning and 24.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 925.60 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 24.5 MB in the beginning and 35.0 MB in the end (delta: -10.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 71601.55 ms. Allocated memory was 71.3 MB in the beginning and 188.7 MB in the end (delta: 117.4 MB). Free memory was 34.6 MB in the beginning and 68.8 MB in the end (delta: -34.2 MB). Peak memory consumption was 83.5 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...