./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0158-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/test-0158-2.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 0e7174a28ac52b04ed4de9f759628aa0f94f2add ......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/test-0158-2.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 0e7174a28ac52b04ed4de9f759628aa0f94f2add ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:34:52,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:34:52,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:34:52,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:34:52,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:34:52,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:34:52,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:34:52,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:34:52,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:34:52,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:34:52,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:34:52,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:34:52,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:34:52,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:34:52,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:34:52,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:34:52,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:34:52,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:34:52,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:34:52,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:34:52,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:34:52,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:34:52,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:34:52,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:34:52,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:34:52,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:34:52,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:34:52,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:34:52,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:34:52,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:34:52,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:34:52,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:34:52,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:34:52,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:34:52,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:34:52,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:34:52,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:34:52,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:34:52,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:34:52,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:34:52,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:34:52,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:34:52,551 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:34:52,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:34:52,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:34:52,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:34:52,554 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:34:52,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:34:52,554 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:34:52,554 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:34:52,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:34:52,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:34:52,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:34:52,556 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:34:52,556 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:34:52,556 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:34:52,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:34:52,557 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:34:52,557 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:34:52,557 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:34:52,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:34:52,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:34:52,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:34:52,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:34:52,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:34:52,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:34:52,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:34:52,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:34:52,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:34:52,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 0e7174a28ac52b04ed4de9f759628aa0f94f2add [2019-11-28 02:34:52,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:34:52,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:34:52,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:34:52,922 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:34:52,922 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:34:52,923 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2019-11-28 02:34:53,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2801c8c12/ad62215daf0e4f248e67ba9e62b03f59/FLAG3a70ef26e [2019-11-28 02:34:53,613 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:34:53,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2019-11-28 02:34:53,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2801c8c12/ad62215daf0e4f248e67ba9e62b03f59/FLAG3a70ef26e [2019-11-28 02:34:53,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2801c8c12/ad62215daf0e4f248e67ba9e62b03f59 [2019-11-28 02:34:53,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:34:53,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:34:53,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:34:53,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:34:53,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:34:53,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:34:53" (1/1) ... [2019-11-28 02:34:53,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72e966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:53, skipping insertion in model container [2019-11-28 02:34:53,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:34:53" (1/1) ... [2019-11-28 02:34:53,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:34:53,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:34:54,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:34:54,349 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:34:54,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:34:54,461 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:34:54,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54 WrapperNode [2019-11-28 02:34:54,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:34:54,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:34:54,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:34:54,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:34:54,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54" (1/1) ... [2019-11-28 02:34:54,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54" (1/1) ... [2019-11-28 02:34:54,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54" (1/1) ... [2019-11-28 02:34:54,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54" (1/1) ... [2019-11-28 02:34:54,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54" (1/1) ... [2019-11-28 02:34:54,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54" (1/1) ... [2019-11-28 02:34:54,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54" (1/1) ... [2019-11-28 02:34:54,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:34:54,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:34:54,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:34:54,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:34:54,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:34:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:34:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:34:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:34:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:34:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:34:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:34:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:34:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:34:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 02:34:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:34:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:34:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:34:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:34:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:34:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:34:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:34:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:34:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:34:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:34:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:34:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:34:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:34:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:34:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:34:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:34:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:34:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:34:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:34:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:34:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:34:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:34:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:34:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:34:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:34:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:34:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:34:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:34:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:34:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:34:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:34:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:34:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:34:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:34:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:34:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:34:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:34:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:34:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:34:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:34:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:34:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:34:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:34:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:34:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:34:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:34:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:34:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:34:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:34:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:34:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:34:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:34:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:34:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:34:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:34:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:34:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:34:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:34:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:34:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:34:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:34:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:34:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:34:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:34:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:34:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:34:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:34:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:34:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:34:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:34:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:34:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:34:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:34:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:34:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:34:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:34:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:34:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:34:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:34:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:34:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:34:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:34:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:34:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:34:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:34:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:34:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:34:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:34:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:34:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:34:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:34:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:34:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:34:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:34:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:34:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:34:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:34:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:34:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:34:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:34:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:34:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:34:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:34:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:34:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:34:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:34:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:34:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:34:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:34:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:34:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 02:34:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:34:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:34:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:34:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:34:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 02:34:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:34:55,075 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:34:55,076 INFO L297 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-28 02:34:55,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:34:55 BoogieIcfgContainer [2019-11-28 02:34:55,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:34:55,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:34:55,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:34:55,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:34:55,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:34:53" (1/3) ... [2019-11-28 02:34:55,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35113b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:34:55, skipping insertion in model container [2019-11-28 02:34:55,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:54" (2/3) ... [2019-11-28 02:34:55,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35113b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:34:55, skipping insertion in model container [2019-11-28 02:34:55,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:34:55" (3/3) ... [2019-11-28 02:34:55,086 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2019-11-28 02:34:55,097 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:34:55,105 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-28 02:34:55,118 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-28 02:34:55,139 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:34:55,140 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:34:55,140 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:34:55,148 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:34:55,150 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:34:55,150 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:34:55,150 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:34:55,150 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:34:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-28 02:34:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:34:55,173 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:34:55,174 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:34:55,174 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:34:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:34:55,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1002242207, now seen corresponding path program 1 times [2019-11-28 02:34:55,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:34:55,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325697033] [2019-11-28 02:34:55,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:34:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:34:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:34:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:34:55,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325697033] [2019-11-28 02:34:55,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:34:55,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:34:55,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841843285] [2019-11-28 02:34:55,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:34:55,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:34:55,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:34:55,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:34:55,439 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2019-11-28 02:34:55,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:34:55,531 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2019-11-28 02:34:55,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:34:55,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 02:34:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:34:55,543 INFO L225 Difference]: With dead ends: 18 [2019-11-28 02:34:55,544 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 02:34:55,546 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:34:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 02:34:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 02:34:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 02:34:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-11-28 02:34:55,583 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 7 [2019-11-28 02:34:55,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:34:55,584 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-11-28 02:34:55,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:34:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-11-28 02:34:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:34:55,584 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:34:55,585 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:34:55,585 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:34:55,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:34:55,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1002242208, now seen corresponding path program 1 times [2019-11-28 02:34:55,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:34:55,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445797753] [2019-11-28 02:34:55,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:34:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:34:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:34:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:34:55,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445797753] [2019-11-28 02:34:55,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:34:55,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:34:55,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465258673] [2019-11-28 02:34:55,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:34:55,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:34:55,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:34:55,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:34:55,693 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 4 states. [2019-11-28 02:34:55,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:34:55,736 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-11-28 02:34:55,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:34:55,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 02:34:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:34:55,738 INFO L225 Difference]: With dead ends: 12 [2019-11-28 02:34:55,738 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 02:34:55,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:34:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 02:34:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 02:34:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:34:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-11-28 02:34:55,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 7 [2019-11-28 02:34:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:34:55,745 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-11-28 02:34:55,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:34:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-11-28 02:34:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:34:55,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:34:55,747 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:34:55,747 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:34:55,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:34:55,748 INFO L82 PathProgramCache]: Analyzing trace with hash 502608035, now seen corresponding path program 1 times [2019-11-28 02:34:55,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:34:55,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878702377] [2019-11-28 02:34:55,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:34:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:34:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:34:55,844 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:34:55,844 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:34:55,856 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 02:34:55,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:34:55 BoogieIcfgContainer [2019-11-28 02:34:55,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:34:55,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:34:55,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:34:55,866 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:34:55,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:34:55" (3/4) ... [2019-11-28 02:34:55,870 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:34:55,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:34:55,873 INFO L168 Benchmark]: Toolchain (without parser) took 1979.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -60.6 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:34:55,874 INFO L168 Benchmark]: CDTParser took 1.58 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:34:55,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:34:55,876 INFO L168 Benchmark]: Boogie Preprocessor took 59.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:34:55,877 INFO L168 Benchmark]: RCFGBuilder took 554.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:34:55,878 INFO L168 Benchmark]: TraceAbstraction took 786.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:34:55,878 INFO L168 Benchmark]: Witness Printer took 4.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:34:55,883 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.58 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 569.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 59.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 554.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 786.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 512]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 512. Possible FailurePath: [L514-L521] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L522] data.p0 = malloc(37U) VAL [data={2:0}, malloc(37U)={-1:0}] [L523] data.str.p2 = &data VAL [data={2:0}, malloc(37U)={-1:0}] [L524] data.str.c[1] = sizeof data.str.p1 VAL [data={2:0}, malloc(37U)={-1:0}] [L525] return 0; [L525] return 0; VAL [\result=0, malloc(37U)={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 36 locations, 7 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 9 SDslu, 15 SDs, 0 SdLazy, 40 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:34:57,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:34:57,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:34:58,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:34:58,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:34:58,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:34:58,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:34:58,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:34:58,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:34:58,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:34:58,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:34:58,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:34:58,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:34:58,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:34:58,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:34:58,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:34:58,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:34:58,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:34:58,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:34:58,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:34:58,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:34:58,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:34:58,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:34:58,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:34:58,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:34:58,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:34:58,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:34:58,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:34:58,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:34:58,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:34:58,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:34:58,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:34:58,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:34:58,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:34:58,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:34:58,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:34:58,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:34:58,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:34:58,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:34:58,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:34:58,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:34:58,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-28 02:34:58,093 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:34:58,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:34:58,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:34:58,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:34:58,098 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:34:58,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:34:58,099 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:34:58,099 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:34:58,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:34:58,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:34:58,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:34:58,100 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:34:58,100 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:34:58,100 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:34:58,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:34:58,101 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:34:58,101 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 02:34:58,101 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 02:34:58,101 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:34:58,101 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:34:58,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:34:58,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:34:58,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:34:58,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:34:58,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:34:58,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:34:58,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:34:58,103 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 02:34:58,103 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 02:34:58,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 02:34:58,104 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 0e7174a28ac52b04ed4de9f759628aa0f94f2add [2019-11-28 02:34:58,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:34:58,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:34:58,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:34:58,444 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:34:58,444 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:34:58,446 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2019-11-28 02:34:58,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb796f032/46759151f4e344e39cf557bd61540254/FLAG9ef172b8c [2019-11-28 02:34:59,036 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:34:59,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2019-11-28 02:34:59,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb796f032/46759151f4e344e39cf557bd61540254/FLAG9ef172b8c [2019-11-28 02:34:59,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb796f032/46759151f4e344e39cf557bd61540254 [2019-11-28 02:34:59,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:34:59,344 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:34:59,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:34:59,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:34:59,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:34:59,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:34:59" (1/1) ... [2019-11-28 02:34:59,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab6e674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59, skipping insertion in model container [2019-11-28 02:34:59,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:34:59" (1/1) ... [2019-11-28 02:34:59,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:34:59,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:34:59,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:34:59,844 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:34:59,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:34:59,968 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:34:59,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59 WrapperNode [2019-11-28 02:34:59,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:34:59,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:34:59,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:34:59,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:34:59,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59" (1/1) ... [2019-11-28 02:34:59,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59" (1/1) ... [2019-11-28 02:35:00,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59" (1/1) ... [2019-11-28 02:35:00,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59" (1/1) ... [2019-11-28 02:35:00,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59" (1/1) ... [2019-11-28 02:35:00,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59" (1/1) ... [2019-11-28 02:35:00,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59" (1/1) ... [2019-11-28 02:35:00,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:35:00,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:35:00,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:35:00,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:35:00,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:35:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:35:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:35:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 02:35:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:35:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:35:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:35:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:35:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:35:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:35:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 02:35:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:35:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:35:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:35:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:35:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:35:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:35:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:35:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:35:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:35:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:35:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:35:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:35:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:35:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:35:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:35:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:35:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:35:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:35:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:35:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:35:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:35:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:35:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:35:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:35:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:35:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:35:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:35:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:35:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:35:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:35:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:35:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:35:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:35:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:35:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:35:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:35:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:35:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:35:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:35:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:35:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:35:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:35:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:35:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:35:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:35:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:35:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:35:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:35:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:35:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:35:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:35:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:35:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:35:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:35:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:35:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:35:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:35:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:35:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:35:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:35:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:35:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:35:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:35:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:35:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:35:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:35:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:35:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:35:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:35:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:35:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:35:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:35:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:35:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:35:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:35:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:35:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:35:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:35:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:35:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:35:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:35:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:35:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:35:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:35:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:35:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:35:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:35:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:35:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:35:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:35:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:35:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:35:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:35:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:35:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:35:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:35:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:35:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:35:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:35:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:35:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:35:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:35:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:35:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:35:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:35:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:35:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:35:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:35:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:35:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:35:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 02:35:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-28 02:35:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:35:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:35:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:35:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 02:35:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 02:35:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-28 02:35:00,655 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:35:00,655 INFO L297 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-28 02:35:00,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:35:00 BoogieIcfgContainer [2019-11-28 02:35:00,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:35:00,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:35:00,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:35:00,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:35:00,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:34:59" (1/3) ... [2019-11-28 02:35:00,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759983fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:35:00, skipping insertion in model container [2019-11-28 02:35:00,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:34:59" (2/3) ... [2019-11-28 02:35:00,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759983fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:35:00, skipping insertion in model container [2019-11-28 02:35:00,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:35:00" (3/3) ... [2019-11-28 02:35:00,665 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2019-11-28 02:35:00,676 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:35:00,684 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-28 02:35:00,697 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-28 02:35:00,717 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:35:00,718 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:35:00,718 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:35:00,718 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:35:00,718 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:35:00,718 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:35:00,719 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:35:00,719 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:35:00,730 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-28 02:35:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:35:00,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:35:00,739 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:35:00,739 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:35:00,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:35:00,744 INFO L82 PathProgramCache]: Analyzing trace with hash -296677259, now seen corresponding path program 1 times [2019-11-28 02:35:00,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:35:00,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280772982] [2019-11-28 02:35:00,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 02:35:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:35:00,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:35:00,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:35:01,015 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-28 02:35:01,016 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-28 02:35:01,017 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:35:01,025 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:35:01,028 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 02:35:01,029 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-28 02:35:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:35:01,049 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:35:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:35:01,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280772982] [2019-11-28 02:35:01,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:35:01,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 02:35:01,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964643718] [2019-11-28 02:35:01,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:35:01,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:35:01,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:35:01,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:35:01,093 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-11-28 02:35:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:35:01,170 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2019-11-28 02:35:01,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:35:01,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 02:35:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:35:01,182 INFO L225 Difference]: With dead ends: 18 [2019-11-28 02:35:01,183 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 02:35:01,185 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:35:01,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 02:35:01,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 02:35:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 02:35:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-11-28 02:35:01,225 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 7 [2019-11-28 02:35:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:35:01,226 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-11-28 02:35:01,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:35:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-11-28 02:35:01,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:35:01,227 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:35:01,227 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:35:01,440 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 02:35:01,441 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:35:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:35:01,441 INFO L82 PathProgramCache]: Analyzing trace with hash -296677258, now seen corresponding path program 1 times [2019-11-28 02:35:01,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:35:01,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700517935] [2019-11-28 02:35:01,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 02:35:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:35:01,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:35:01,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:35:01,568 INFO L404 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2019-11-28 02:35:01,579 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 02:35:01,582 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-28 02:35:01,582 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:35:01,601 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:35:01,607 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 02:35:01,613 INFO L377 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 5 treesize of output 3 [2019-11-28 02:35:01,614 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:35:01,627 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:35:01,628 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 02:35:01,628 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-11-28 02:35:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:35:01,646 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:35:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:35:01,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700517935] [2019-11-28 02:35:01,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:35:01,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-28 02:35:01,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24393324] [2019-11-28 02:35:01,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:35:01,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:35:01,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:35:01,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:35:01,731 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 4 states. [2019-11-28 02:35:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:35:01,776 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-11-28 02:35:01,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:35:01,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 02:35:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:35:01,779 INFO L225 Difference]: With dead ends: 12 [2019-11-28 02:35:01,779 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 02:35:01,780 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:35:01,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 02:35:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 02:35:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:35:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-11-28 02:35:01,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 7 [2019-11-28 02:35:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:35:01,787 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-11-28 02:35:01,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:35:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-11-28 02:35:01,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:35:01,792 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:35:01,792 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:35:01,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 02:35:01,993 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:35:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:35:01,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1169931001, now seen corresponding path program 1 times [2019-11-28 02:35:01,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:35:01,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988613871] [2019-11-28 02:35:01,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-28 02:35:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:35:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:35:02,218 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 02:35:02,219 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:35:02,419 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 02:35:02,436 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 02:35:02,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:35:02 BoogieIcfgContainer [2019-11-28 02:35:02,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:35:02,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:35:02,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:35:02,465 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:35:02,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:35:00" (3/4) ... [2019-11-28 02:35:02,473 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:35:02,474 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:35:02,477 INFO L168 Benchmark]: Toolchain (without parser) took 3132.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 960.4 MB in the beginning and 908.4 MB in the end (delta: 51.9 MB). Peak memory consumption was 162.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:35:02,479 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:35:02,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -132.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:35:02,480 INFO L168 Benchmark]: Boogie Preprocessor took 78.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:35:02,481 INFO L168 Benchmark]: RCFGBuilder took 608.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:35:02,482 INFO L168 Benchmark]: TraceAbstraction took 1805.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 908.4 MB in the end (delta: 128.5 MB). Peak memory consumption was 128.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:35:02,483 INFO L168 Benchmark]: Witness Printer took 10.69 ms. Allocated memory is still 1.1 GB. Free memory is still 908.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:35:02,488 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 623.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -132.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 608.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1805.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 908.4 MB in the end (delta: 128.5 MB). Peak memory consumption was 128.5 MB. Max. memory is 11.5 GB. * Witness Printer took 10.69 ms. Allocated memory is still 1.1 GB. Free memory is still 908.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 512]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 512. Possible FailurePath: [L514-L521] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L522] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={1:0}] [L523] data.str.p2 = &data VAL [data={3:0}, malloc(37U)={1:0}] [L524] data.str.c[1] = sizeof data.str.p1 VAL [data={3:0}, malloc(37U)={1:0}] [L525] return 0; [L525] return 0; VAL [\result=0, malloc(37U)={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 42 locations, 7 error locations. Result: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 9 SDslu, 18 SDs, 0 SdLazy, 17 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 1 QuantifiedInterpolants, 396 SizeOfPredicates, 5 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...