./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 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/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 0.1.24-30f4e4a [2019-11-28 02:31:19,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:31:19,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:31:19,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:31:19,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:31:19,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:31:19,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:31:19,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:31:19,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:31:19,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:31:19,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:31:19,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:31:19,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:31:19,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:31:19,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:31:19,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:31:19,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:31:19,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:31:19,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:31:19,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:31:19,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:31:19,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:31:19,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:31:19,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:31:19,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:31:19,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:31:19,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:31:19,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:31:19,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:31:19,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:31:19,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:31:19,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:31:19,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:31:19,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:31:19,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:31:19,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:31:19,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:31:19,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:31:19,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:31:19,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:31:19,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:31:19,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:31:19,379 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:31:19,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:31:19,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:31:19,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:31:19,386 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:31:19,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:31:19,387 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:31:19,388 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:31:19,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:31:19,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:31:19,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:31:19,389 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:31:19,390 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:31:19,391 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:31:19,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:31:19,391 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:31:19,391 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:31:19,392 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:31:19,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:31:19,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:31:19,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:31:19,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:31:19,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:31:19,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:31:19,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:31:19,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:31:19,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:31:19,394 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 02:31:19,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:31:19,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:31:19,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:31:19,720 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:31:19,721 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:31:19,721 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2019-11-28 02:31:19,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60181be6e/2a65e12b303b47ddb19b57cd1e7a86b2/FLAGf2093e374 [2019-11-28 02:31:20,261 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:31:20,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2019-11-28 02:31:20,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60181be6e/2a65e12b303b47ddb19b57cd1e7a86b2/FLAGf2093e374 [2019-11-28 02:31:20,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60181be6e/2a65e12b303b47ddb19b57cd1e7a86b2 [2019-11-28 02:31:20,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:31:20,647 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:31:20,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:31:20,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:31:20,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:31:20,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:20" (1/1) ... [2019-11-28 02:31:20,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8bbb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:20, skipping insertion in model container [2019-11-28 02:31:20,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:20" (1/1) ... [2019-11-28 02:31:20,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:31:20,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:31:21,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:31:21,094 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:31:21,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:31:21,239 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:31:21,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21 WrapperNode [2019-11-28 02:31:21,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:31:21,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:31:21,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:31:21,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:31:21,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21" (1/1) ... [2019-11-28 02:31:21,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21" (1/1) ... [2019-11-28 02:31:21,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21" (1/1) ... [2019-11-28 02:31:21,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21" (1/1) ... [2019-11-28 02:31:21,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21" (1/1) ... [2019-11-28 02:31:21,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21" (1/1) ... [2019-11-28 02:31:21,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21" (1/1) ... [2019-11-28 02:31:21,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:31:21,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:31:21,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:31:21,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:31:21,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21" (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 02:31:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:31:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:31:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:31:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:31:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:31:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:31:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:31:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2019-11-28 02:31:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrlen [2019-11-28 02:31:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:31:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:31:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:31:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:31:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:31:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:31:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:31:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:31:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:31:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:31:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:31:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:31:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:31:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:31:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:31:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:31:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:31:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:31:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:31:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:31:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:31:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:31:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:31:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:31:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:31:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:31:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:31:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:31:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:31:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:31:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:31:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:31:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:31:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:31:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:31:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:31:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:31:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:31:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:31:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:31:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:31:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:31:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:31:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:31:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:31:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:31:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:31:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:31:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:31:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:31:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:31:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:31:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:31:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:31:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:31:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:31:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:31:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:31:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:31:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:31:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:31:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:31:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:31:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:31:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:31:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:31:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:31:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:31:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:31:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:31:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:31:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:31:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:31:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:31:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:31:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:31:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:31:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:31:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:31:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:31:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:31:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:31:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:31:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:31:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:31:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:31:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:31:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:31:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:31:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:31:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:31:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:31:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:31:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:31:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:31:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:31:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:31:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:31:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:31:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:31:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:31:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:31:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:31:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:31:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:31:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:31:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:31:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:31:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:31:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-28 02:31:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2019-11-28 02:31:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:31:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:31:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure cstrlen [2019-11-28 02:31:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:31:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:31:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:31:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:31:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:31:22,076 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:31:22,077 INFO L297 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 02:31:22,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:22 BoogieIcfgContainer [2019-11-28 02:31:22,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:31:22,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:31:22,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:31:22,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:31:22,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:31:20" (1/3) ... [2019-11-28 02:31:22,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfbb370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:22, skipping insertion in model container [2019-11-28 02:31:22,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:21" (2/3) ... [2019-11-28 02:31:22,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfbb370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:22, skipping insertion in model container [2019-11-28 02:31:22,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:22" (3/3) ... [2019-11-28 02:31:22,089 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrlen_unsafe.i [2019-11-28 02:31:22,099 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:31:22,108 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-28 02:31:22,121 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-28 02:31:22,141 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:31:22,142 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:31:22,142 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:31:22,142 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:31:22,143 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:31:22,143 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:31:22,143 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:31:22,144 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:31:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-11-28 02:31:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:31:22,174 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:22,174 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:22,175 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 02:31:22,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:22,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1978316378, now seen corresponding path program 1 times [2019-11-28 02:31:22,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:22,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700722762] [2019-11-28 02:31:22,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:22,392 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 02:31:22,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700722762] [2019-11-28 02:31:22,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:22,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:31:22,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503092573] [2019-11-28 02:31:22,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:31:22,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:22,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:31:22,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:31:22,420 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2019-11-28 02:31:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:22,599 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-11-28 02:31:22,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:31:22,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 02:31:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:22,612 INFO L225 Difference]: With dead ends: 41 [2019-11-28 02:31:22,613 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 02:31:22,615 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 02:31:22,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 02:31:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-28 02:31:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 02:31:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-11-28 02:31:22,656 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 11 [2019-11-28 02:31:22,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:22,657 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-11-28 02:31:22,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:31:22,657 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-11-28 02:31:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:31:22,658 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:22,658 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:22,658 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 02:31:22,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:22,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1978316379, now seen corresponding path program 1 times [2019-11-28 02:31:22,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:22,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929328753] [2019-11-28 02:31:22,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:22,765 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 02:31:22,765 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929328753] [2019-11-28 02:31:22,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:22,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:31:22,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677123896] [2019-11-28 02:31:22,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:31:22,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:22,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:31:22,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:31:22,769 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 5 states. [2019-11-28 02:31:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:22,890 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-11-28 02:31:22,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:31:22,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 02:31:22,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:22,893 INFO L225 Difference]: With dead ends: 37 [2019-11-28 02:31:22,893 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 02:31:22,894 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 02:31:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 02:31:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-28 02:31:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 02:31:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-11-28 02:31:22,900 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2019-11-28 02:31:22,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:22,901 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2019-11-28 02:31:22,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:31:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2019-11-28 02:31:22,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:31:22,902 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:22,902 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:22,902 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 02:31:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1978316432, now seen corresponding path program 1 times [2019-11-28 02:31:22,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:22,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986586940] [2019-11-28 02:31:22,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:22,978 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 02:31:22,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986586940] [2019-11-28 02:31:22,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:22,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:31:22,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818496504] [2019-11-28 02:31:22,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:31:22,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:22,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:31:22,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:31:22,981 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-11-28 02:31:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:23,098 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2019-11-28 02:31:23,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:31:23,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 02:31:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:23,103 INFO L225 Difference]: With dead ends: 43 [2019-11-28 02:31:23,103 INFO L226 Difference]: Without dead ends: 43 [2019-11-28 02:31:23,104 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 02:31:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-28 02:31:23,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-11-28 02:31:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 02:31:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2019-11-28 02:31:23,112 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2019-11-28 02:31:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:23,113 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2019-11-28 02:31:23,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:31:23,113 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2019-11-28 02:31:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:31:23,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:23,114 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:23,115 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 02:31:23,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:23,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1978376014, now seen corresponding path program 1 times [2019-11-28 02:31:23,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:23,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032941918] [2019-11-28 02:31:23,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:23,234 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 02:31:23,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032941918] [2019-11-28 02:31:23,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:23,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:31:23,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777993744] [2019-11-28 02:31:23,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:31:23,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:23,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:31:23,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:31:23,243 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 5 states. [2019-11-28 02:31:23,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:23,372 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-11-28 02:31:23,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:31:23,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 02:31:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:23,374 INFO L225 Difference]: With dead ends: 47 [2019-11-28 02:31:23,374 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 02:31:23,375 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 02:31:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 02:31:23,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2019-11-28 02:31:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-28 02:31:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2019-11-28 02:31:23,388 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 11 [2019-11-28 02:31:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:23,389 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2019-11-28 02:31:23,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:31:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2019-11-28 02:31:23,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 02:31:23,391 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:23,391 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:23,392 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 02:31:23,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:23,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1295904273, now seen corresponding path program 1 times [2019-11-28 02:31:23,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:23,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215346772] [2019-11-28 02:31:23,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:23,553 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 02:31:23,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215346772] [2019-11-28 02:31:23,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328733903] [2019-11-28 02:31:23,554 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 02:31:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:23,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:31:23,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:31:23,786 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 02:31:23,787 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:31:23,803 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:31:23,804 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:31:23,804 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-28 02:31:23,831 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 02:31:23,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:31:23,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-11-28 02:31:23,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406898546] [2019-11-28 02:31:23,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:31:23,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:23,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:31:23,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:31:23,837 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 7 states. [2019-11-28 02:31:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:23,992 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2019-11-28 02:31:23,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:31:23,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-28 02:31:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:23,993 INFO L225 Difference]: With dead ends: 46 [2019-11-28 02:31:23,994 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 02:31:23,994 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:31:23,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 02:31:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2019-11-28 02:31:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 02:31:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-11-28 02:31:24,000 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 15 [2019-11-28 02:31:24,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:24,000 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-11-28 02:31:24,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:31:24,000 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-11-28 02:31:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:31:24,001 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:24,001 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 02:31:24,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:31:24,203 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 02:31:24,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:24,204 INFO L82 PathProgramCache]: Analyzing trace with hash -77704130, now seen corresponding path program 1 times [2019-11-28 02:31:24,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:24,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777600380] [2019-11-28 02:31:24,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:24,381 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 02:31:24,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777600380] [2019-11-28 02:31:24,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:24,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-28 02:31:24,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37263028] [2019-11-28 02:31:24,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 02:31:24,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:24,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 02:31:24,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:31:24,385 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 10 states. [2019-11-28 02:31:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:24,636 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2019-11-28 02:31:24,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:31:24,637 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-28 02:31:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:24,638 INFO L225 Difference]: With dead ends: 36 [2019-11-28 02:31:24,638 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 02:31:24,638 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 02:31:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 02:31:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 02:31:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 02:31:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-11-28 02:31:24,643 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 18 [2019-11-28 02:31:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:24,643 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-11-28 02:31:24,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 02:31:24,643 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-11-28 02:31:24,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:31:24,644 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:24,644 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 02:31:24,644 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 02:31:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash -77704129, now seen corresponding path program 1 times [2019-11-28 02:31:24,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:24,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700297066] [2019-11-28 02:31:24,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:24,852 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 02:31:24,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700297066] [2019-11-28 02:31:24,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:24,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-28 02:31:24,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252667786] [2019-11-28 02:31:24,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 02:31:24,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:24,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 02:31:24,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:31:24,855 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 12 states. [2019-11-28 02:31:25,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:25,181 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-11-28 02:31:25,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 02:31:25,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-28 02:31:25,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:25,182 INFO L225 Difference]: With dead ends: 40 [2019-11-28 02:31:25,183 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 02:31:25,183 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 02:31:25,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 02:31:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-11-28 02:31:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 02:31:25,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-11-28 02:31:25,188 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 18 [2019-11-28 02:31:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:25,188 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-11-28 02:31:25,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 02:31:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-11-28 02:31:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:31:25,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:25,189 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 02:31:25,190 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 02:31:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:25,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1659223880, now seen corresponding path program 1 times [2019-11-28 02:31:25,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:25,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365619846] [2019-11-28 02:31:25,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:25,480 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 02:31:25,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365619846] [2019-11-28 02:31:25,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:25,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-28 02:31:25,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536362227] [2019-11-28 02:31:25,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 02:31:25,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:25,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 02:31:25,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:31:25,483 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 13 states. [2019-11-28 02:31:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:25,945 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2019-11-28 02:31:25,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 02:31:25,945 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2019-11-28 02:31:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:25,947 INFO L225 Difference]: With dead ends: 55 [2019-11-28 02:31:25,947 INFO L226 Difference]: Without dead ends: 55 [2019-11-28 02:31:25,948 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2019-11-28 02:31:25,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-28 02:31:25,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2019-11-28 02:31:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 02:31:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2019-11-28 02:31:25,953 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 20 [2019-11-28 02:31:25,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:25,954 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2019-11-28 02:31:25,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 02:31:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2019-11-28 02:31:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:31:25,955 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:25,955 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 02:31:25,955 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 02:31:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2048937402, now seen corresponding path program 1 times [2019-11-28 02:31:25,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:25,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786993104] [2019-11-28 02:31:25,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:26,200 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 02:31:26,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786993104] [2019-11-28 02:31:26,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:26,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-28 02:31:26,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436497019] [2019-11-28 02:31:26,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 02:31:26,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:26,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 02:31:26,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-11-28 02:31:26,202 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 14 states. [2019-11-28 02:31:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:26,639 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2019-11-28 02:31:26,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 02:31:26,639 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2019-11-28 02:31:26,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:26,641 INFO L225 Difference]: With dead ends: 71 [2019-11-28 02:31:26,641 INFO L226 Difference]: Without dead ends: 71 [2019-11-28 02:31:26,641 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 02:31:26,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-28 02:31:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 49. [2019-11-28 02:31:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-28 02:31:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2019-11-28 02:31:26,647 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 20 [2019-11-28 02:31:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:26,648 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2019-11-28 02:31:26,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 02:31:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2019-11-28 02:31:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 02:31:26,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:26,649 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 02:31:26,649 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 02:31:26,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:26,650 INFO L82 PathProgramCache]: Analyzing trace with hash 863431255, now seen corresponding path program 1 times [2019-11-28 02:31:26,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:26,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225022984] [2019-11-28 02:31:26,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:31:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:31:26,740 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:31:26,741 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:31:26,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:31:26 BoogieIcfgContainer [2019-11-28 02:31:26,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:31:26,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:31:26,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:31:26,786 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:31:26,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:22" (3/4) ... [2019-11-28 02:31:26,789 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:31:26,843 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:31:26,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:31:26,845 INFO L168 Benchmark]: Toolchain (without parser) took 6198.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 216.0 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -42.2 MB). Peak memory consumption was 173.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:26,846 INFO L168 Benchmark]: CDTParser took 0.51 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 02:31:26,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -175.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:26,847 INFO L168 Benchmark]: Boogie Preprocessor took 68.80 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:26,848 INFO L168 Benchmark]: RCFGBuilder took 769.80 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:26,849 INFO L168 Benchmark]: TraceAbstraction took 4705.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.6 MB). Peak memory consumption was 142.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:26,849 INFO L168 Benchmark]: Witness Printer took 57.93 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 02:31:26,852 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 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 591.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -175.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.80 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 769.80 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4705.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.6 MB). Peak memory consumption was 142.2 MB. Max. memory is 11.5 GB. * Witness Printer took 57.93 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: 4.6s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 232 SDtfs, 341 SDslu, 454 SDs, 0 SdLazy, 1201 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.4s 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, 1.4s 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...