./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c 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/array-memsafety/cstrlen_unsafe.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 15362e3354379e86b7768de02eb760f50ed72879 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:04:04,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:04:04,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:04:04,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:04:04,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:04:04,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:04:04,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:04:04,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:04:04,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:04:04,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:04:04,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:04:04,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:04:04,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:04:04,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:04:04,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:04:04,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:04:04,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:04:04,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:04:04,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:04:04,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:04:04,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:04:04,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:04:04,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:04:04,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:04:04,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:04:04,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:04:04,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:04:04,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:04:04,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:04:04,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:04:04,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:04:04,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:04:04,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:04:04,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:04:04,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:04:04,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:04:04,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:04:04,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:04:04,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:04:04,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:04:04,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:04:04,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:04:04,575 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:04:04,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:04:04,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:04:04,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:04:04,580 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:04:04,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:04:04,582 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:04:04,583 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:04:04,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:04:04,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:04:04,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:04:04,584 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:04:04,584 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:04:04,585 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:04:04,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:04:04,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:04:04,586 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:04:04,586 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:04:04,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:04:04,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:04:04,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:04:04,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:04:04,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:04:04,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:04:04,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:04:04,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:04:04,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:04:04,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:04:04,590 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 -> 15362e3354379e86b7768de02eb760f50ed72879 [2019-11-28 20:04:04,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:04:04,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:04:04,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:04:04,923 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:04:04,924 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:04:04,924 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2019-11-28 20:04:05,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4804dba/68b61107ca64420f94b441f8f2ffcf95/FLAG3634e08cf [2019-11-28 20:04:05,555 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:04:05,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2019-11-28 20:04:05,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4804dba/68b61107ca64420f94b441f8f2ffcf95/FLAG3634e08cf [2019-11-28 20:04:05,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4804dba/68b61107ca64420f94b441f8f2ffcf95 [2019-11-28 20:04:05,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:04:05,861 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:04:05,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:04:05,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:04:05,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:04:05,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:04:05" (1/1) ... [2019-11-28 20:04:05,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34cffb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:05, skipping insertion in model container [2019-11-28 20:04:05,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:04:05" (1/1) ... [2019-11-28 20:04:05,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:04:05,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:04:06,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:04:06,398 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:04:06,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:04:06,509 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:04:06,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06 WrapperNode [2019-11-28 20:04:06,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:04:06,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:04:06,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:04:06,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:04:06,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06" (1/1) ... [2019-11-28 20:04:06,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06" (1/1) ... [2019-11-28 20:04:06,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06" (1/1) ... [2019-11-28 20:04:06,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06" (1/1) ... [2019-11-28 20:04:06,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06" (1/1) ... [2019-11-28 20:04:06,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06" (1/1) ... [2019-11-28 20:04:06,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06" (1/1) ... [2019-11-28 20:04:06,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:04:06,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:04:06,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:04:06,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:04:06,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06" (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 20:04:06,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:04:06,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:04:06,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:04:06,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:04:06,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:04:06,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:04:06,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:04:06,649 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2019-11-28 20:04:06,649 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrlen [2019-11-28 20:04:06,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:04:06,650 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:04:06,650 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:04:06,650 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:04:06,650 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:04:06,650 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:04:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:04:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:04:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:04:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:04:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:04:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:04:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:04:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:04:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:04:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:04:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:04:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:04:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:04:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:04:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:04:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:04:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:04:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:04:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:04:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:04:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:04:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:04:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:04:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:04:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:04:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:04:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:04:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:04:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:04:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:04:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:04:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:04:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:04:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:04:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:04:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:04:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:04:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:04:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:04:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:04:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:04:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:04:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:04:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:04:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:04:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:04:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:04:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:04:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:04:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:04:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:04:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:04:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:04:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:04:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:04:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:04:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:04:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:04:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:04:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:04:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:04:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:04:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:04:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:04:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:04:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:04:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:04:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:04:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:04:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:04:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:04:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:04:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:04:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:04:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:04:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:04:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:04:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:04:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:04:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:04:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:04:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:04:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:04:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:04:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:04:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:04:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:04:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:04:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:04:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:04:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:04:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:04:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:04:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:04:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:04:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:04:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:04:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:04:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:04:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:04:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:04:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:04:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:04:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-28 20:04:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2019-11-28 20:04:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 20:04:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:04:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure cstrlen [2019-11-28 20:04:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:04:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:04:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:04:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:04:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:04:07,236 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:04:07,237 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 20:04:07,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:07 BoogieIcfgContainer [2019-11-28 20:04:07,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:04:07,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:04:07,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:04:07,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:04:07,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:04:05" (1/3) ... [2019-11-28 20:04:07,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b390639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:07, skipping insertion in model container [2019-11-28 20:04:07,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:06" (2/3) ... [2019-11-28 20:04:07,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b390639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:07, skipping insertion in model container [2019-11-28 20:04:07,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:07" (3/3) ... [2019-11-28 20:04:07,250 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrlen_unsafe.i [2019-11-28 20:04:07,258 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:04:07,265 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-28 20:04:07,276 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-28 20:04:07,295 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:04:07,295 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:04:07,295 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:04:07,296 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:04:07,296 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:04:07,296 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:04:07,296 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:04:07,296 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:04:07,311 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-11-28 20:04:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:04:07,320 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:07,321 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:07,321 INFO L410 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:07,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1978316378, now seen corresponding path program 1 times [2019-11-28 20:04:07,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:07,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986441953] [2019-11-28 20:04:07,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:07,547 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 20:04:07,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986441953] [2019-11-28 20:04:07,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:07,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:04:07,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929272293] [2019-11-28 20:04:07,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:04:07,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:07,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:04:07,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:04:07,571 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2019-11-28 20:04:07,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:07,714 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-11-28 20:04:07,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:04:07,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 20:04:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:07,729 INFO L225 Difference]: With dead ends: 41 [2019-11-28 20:04:07,729 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 20:04:07,732 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 20:04:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 20:04:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-28 20:04:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 20:04:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-11-28 20:04:07,779 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 11 [2019-11-28 20:04:07,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:07,779 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-11-28 20:04:07,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:04:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-11-28 20:04:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:04:07,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:07,781 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:07,781 INFO L410 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:07,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1978316379, now seen corresponding path program 1 times [2019-11-28 20:04:07,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:07,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015608994] [2019-11-28 20:04:07,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:07,888 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 20:04:07,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015608994] [2019-11-28 20:04:07,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:07,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:04:07,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553841372] [2019-11-28 20:04:07,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:07,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:07,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:07,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:07,893 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 5 states. [2019-11-28 20:04:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:08,017 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-11-28 20:04:08,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:08,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 20:04:08,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:08,021 INFO L225 Difference]: With dead ends: 37 [2019-11-28 20:04:08,021 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 20:04:08,023 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:04:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 20:04:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-28 20:04:08,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:04:08,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-11-28 20:04:08,032 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2019-11-28 20:04:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:08,032 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2019-11-28 20:04:08,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:08,034 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2019-11-28 20:04:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:04:08,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:08,035 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:08,035 INFO L410 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:08,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1978316432, now seen corresponding path program 1 times [2019-11-28 20:04:08,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:08,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153227948] [2019-11-28 20:04:08,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:08,116 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 20:04:08,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153227948] [2019-11-28 20:04:08,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:08,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:04:08,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827100055] [2019-11-28 20:04:08,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:08,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:08,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:08,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:08,119 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-11-28 20:04:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:08,227 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2019-11-28 20:04:08,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:08,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 20:04:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:08,231 INFO L225 Difference]: With dead ends: 43 [2019-11-28 20:04:08,232 INFO L226 Difference]: Without dead ends: 43 [2019-11-28 20:04:08,232 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:04:08,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-28 20:04:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-11-28 20:04:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 20:04:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2019-11-28 20:04:08,240 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2019-11-28 20:04:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:08,240 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2019-11-28 20:04:08,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2019-11-28 20:04:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:04:08,241 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:08,241 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:08,241 INFO L410 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:08,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:08,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1978376014, now seen corresponding path program 1 times [2019-11-28 20:04:08,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:08,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915843940] [2019-11-28 20:04:08,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:08,337 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 20:04:08,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915843940] [2019-11-28 20:04:08,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:08,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:04:08,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013168157] [2019-11-28 20:04:08,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:08,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:08,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:08,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:08,339 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 5 states. [2019-11-28 20:04:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:08,464 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-11-28 20:04:08,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:08,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 20:04:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:08,466 INFO L225 Difference]: With dead ends: 47 [2019-11-28 20:04:08,466 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 20:04:08,467 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:04:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 20:04:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2019-11-28 20:04:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-28 20:04:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2019-11-28 20:04:08,474 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 11 [2019-11-28 20:04:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:08,474 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2019-11-28 20:04:08,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2019-11-28 20:04:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 20:04:08,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:08,476 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:08,476 INFO L410 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:08,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1295904273, now seen corresponding path program 1 times [2019-11-28 20:04:08,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:08,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25633268] [2019-11-28 20:04:08,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:08,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25633268] [2019-11-28 20:04:08,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919371818] [2019-11-28 20:04:08,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:08,737 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 20:04:08,746 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:08,829 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-28 20:04:08,830 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:08,838 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:08,839 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:04:08,839 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-28 20:04:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:08,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:04:08,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-11-28 20:04:08,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257537746] [2019-11-28 20:04:08,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:04:08,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:08,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:04:08,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:04:08,879 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 7 states. [2019-11-28 20:04:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:09,030 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2019-11-28 20:04:09,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:04:09,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-28 20:04:09,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:09,031 INFO L225 Difference]: With dead ends: 46 [2019-11-28 20:04:09,031 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 20:04:09,032 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:04:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 20:04:09,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2019-11-28 20:04:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 20:04:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-11-28 20:04:09,037 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 15 [2019-11-28 20:04:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:09,038 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-11-28 20:04:09,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:04:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-11-28 20:04:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:04:09,039 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:09,039 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:09,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:09,240 INFO L410 AbstractCegarLoop]: === Iteration 6 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:09,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:09,241 INFO L82 PathProgramCache]: Analyzing trace with hash -77704130, now seen corresponding path program 1 times [2019-11-28 20:04:09,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:09,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145670299] [2019-11-28 20:04:09,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:09,410 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 20:04:09,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145670299] [2019-11-28 20:04:09,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:09,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-28 20:04:09,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013363086] [2019-11-28 20:04:09,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 20:04:09,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:09,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:04:09,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:04:09,413 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 10 states. [2019-11-28 20:04:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:09,645 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2019-11-28 20:04:09,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:04:09,645 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-28 20:04:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:09,646 INFO L225 Difference]: With dead ends: 36 [2019-11-28 20:04:09,646 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 20:04:09,647 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:04:09,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 20:04:09,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 20:04:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 20:04:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-11-28 20:04:09,652 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 18 [2019-11-28 20:04:09,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:09,652 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-11-28 20:04:09,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 20:04:09,653 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-11-28 20:04:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:04:09,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:09,654 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:09,654 INFO L410 AbstractCegarLoop]: === Iteration 7 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:09,655 INFO L82 PathProgramCache]: Analyzing trace with hash -77704129, now seen corresponding path program 1 times [2019-11-28 20:04:09,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:09,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386736644] [2019-11-28 20:04:09,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:09,843 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 20:04:09,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386736644] [2019-11-28 20:04:09,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:09,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-28 20:04:09,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822722992] [2019-11-28 20:04:09,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 20:04:09,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:09,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 20:04:09,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:04:09,846 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 12 states. [2019-11-28 20:04:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:10,178 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-11-28 20:04:10,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 20:04:10,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-28 20:04:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:10,179 INFO L225 Difference]: With dead ends: 40 [2019-11-28 20:04:10,179 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 20:04:10,180 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-11-28 20:04:10,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 20:04:10,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-11-28 20:04:10,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 20:04:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-11-28 20:04:10,185 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 18 [2019-11-28 20:04:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:10,185 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-11-28 20:04:10,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 20:04:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-11-28 20:04:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:04:10,186 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:10,186 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:10,186 INFO L410 AbstractCegarLoop]: === Iteration 8 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:10,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:10,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1659223880, now seen corresponding path program 1 times [2019-11-28 20:04:10,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:10,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309273656] [2019-11-28 20:04:10,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:10,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309273656] [2019-11-28 20:04:10,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:10,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-28 20:04:10,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733782365] [2019-11-28 20:04:10,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 20:04:10,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:10,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 20:04:10,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:04:10,401 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 13 states. [2019-11-28 20:04:10,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:10,764 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2019-11-28 20:04:10,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 20:04:10,765 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2019-11-28 20:04:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:10,766 INFO L225 Difference]: With dead ends: 55 [2019-11-28 20:04:10,766 INFO L226 Difference]: Without dead ends: 55 [2019-11-28 20:04:10,767 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2019-11-28 20:04:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-28 20:04:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2019-11-28 20:04:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 20:04:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2019-11-28 20:04:10,773 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 20 [2019-11-28 20:04:10,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:10,774 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2019-11-28 20:04:10,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 20:04:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2019-11-28 20:04:10,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:04:10,775 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:10,775 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:10,776 INFO L410 AbstractCegarLoop]: === Iteration 9 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:10,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:10,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2048937402, now seen corresponding path program 1 times [2019-11-28 20:04:10,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:10,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430233203] [2019-11-28 20:04:10,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:10,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430233203] [2019-11-28 20:04:10,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:10,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-28 20:04:10,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33871394] [2019-11-28 20:04:10,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 20:04:10,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:10,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 20:04:10,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:04:10,978 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 14 states. [2019-11-28 20:04:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:11,410 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2019-11-28 20:04:11,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 20:04:11,411 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2019-11-28 20:04:11,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:11,413 INFO L225 Difference]: With dead ends: 71 [2019-11-28 20:04:11,413 INFO L226 Difference]: Without dead ends: 71 [2019-11-28 20:04:11,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2019-11-28 20:04:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-28 20:04:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 49. [2019-11-28 20:04:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-28 20:04:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2019-11-28 20:04:11,420 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 20 [2019-11-28 20:04:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:11,420 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2019-11-28 20:04:11,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 20:04:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2019-11-28 20:04:11,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 20:04:11,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:11,421 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:11,422 INFO L410 AbstractCegarLoop]: === Iteration 10 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:04:11,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:11,422 INFO L82 PathProgramCache]: Analyzing trace with hash 863431255, now seen corresponding path program 1 times [2019-11-28 20:04:11,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:11,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722507618] [2019-11-28 20:04:11,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:04:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:04:11,479 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:04:11,480 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:04:11,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:04:11 BoogieIcfgContainer [2019-11-28 20:04:11,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:04:11,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:04:11,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:04:11,512 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:04:11,513 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:07" (3/4) ... [2019-11-28 20:04:11,515 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:04:11,567 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:04:11,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:04:11,572 INFO L168 Benchmark]: Toolchain (without parser) took 5709.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.5 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -40.5 MB). Peak memory consumption was 175.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:11,573 INFO L168 Benchmark]: CDTParser took 0.28 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 20:04:11,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:11,576 INFO L168 Benchmark]: Boogie Preprocessor took 65.50 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 20:04:11,580 INFO L168 Benchmark]: RCFGBuilder took 664.88 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: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:11,581 INFO L168 Benchmark]: TraceAbstraction took 4269.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 62.9 MB). Peak memory consumption was 132.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:11,582 INFO L168 Benchmark]: Witness Printer took 56.46 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 20:04:11,585 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 647.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.50 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 664.88 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: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4269.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 62.9 MB). Peak memory consumption was 132.7 MB. Max. memory is 11.5 GB. * Witness Printer took 56.46 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.plugins.generator.traceabstraction: - CounterExampleResult [Line: 532]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L537] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) VAL [length=2] [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=2, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L521] COND TRUE i < length - 1 [L523] nondetString[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=1, i=0, length=2, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L521] i++ VAL [i=1, length=2, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L521] COND FALSE !(i < length - 1) VAL [i=1, length=2, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L526] nondetString[length-1] = '\0' VAL [i=1, length=2, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L527] return nondetString; VAL [\result={-1:0}, i=1, length=2, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L537] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-1:0}] [L537] char* p = build_nondet_String(); [L538] CALL cstrlen(p) VAL [s={-1:0}] [L531] const char *p = s; VAL [p={-1:0}, s={-1:0}, s={-1:0}] [L532] EXPR \read(*p) VAL [\read(*p)=1, p={-1:0}, s={-1:0}, s={-1:0}] [L532] COND TRUE *p != '\0' [L533] p = p+2 VAL [p={-1:2}, s={-1:0}, s={-1:0}] [L532] \read(*p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 58 locations, 10 error locations. Result: UNSAFE, OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 232 SDtfs, 341 SDslu, 454 SDs, 0 SdLazy, 1201 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=9, 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, 9 MinimizatonAttempts, 51 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 11072 SizeOfPredicates, 3 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 4/6 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 proved your program to be incorrect! Received shutdown request...