./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer --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 b1c981e5c0ba7a15ac143c5240d22ecf11476d0a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-02 20:26:53,935 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 20:26:53,936 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 20:26:53,942 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 20:26:53,943 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 20:26:53,943 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 20:26:53,944 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 20:26:53,946 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 20:26:53,947 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 20:26:53,947 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 20:26:53,948 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 20:26:53,948 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 20:26:53,949 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 20:26:53,950 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 20:26:53,950 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 20:26:53,951 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 20:26:53,952 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 20:26:53,953 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 20:26:53,954 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 20:26:53,955 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 20:26:53,956 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 20:26:53,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 20:26:53,958 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 20:26:53,958 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 20:26:53,959 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 20:26:53,959 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 20:26:53,960 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 20:26:53,960 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 20:26:53,961 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 20:26:53,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 20:26:53,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 20:26:53,962 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 20:26:53,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 20:26:53,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 20:26:53,963 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 20:26:53,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 20:26:53,964 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-02 20:26:53,974 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 20:26:53,974 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 20:26:53,975 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 20:26:53,975 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 20:26:53,975 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 20:26:53,975 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 20:26:53,975 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 20:26:53,976 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 20:26:53,976 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 20:26:53,976 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 20:26:53,976 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 20:26:53,976 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 20:26:53,976 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 20:26:53,977 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 20:26:53,977 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 20:26:53,977 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 20:26:53,977 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 20:26:53,977 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 20:26:53,977 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 20:26:53,977 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 20:26:53,978 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 20:26:53,978 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 20:26:53,978 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 20:26:53,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:26:53,978 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 20:26:53,978 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 20:26:53,979 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 20:26:53,979 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 20:26:53,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer 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 -> b1c981e5c0ba7a15ac143c5240d22ecf11476d0a [2018-12-02 20:26:54,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 20:26:54,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 20:26:54,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 20:26:54,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 20:26:54,013 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 20:26:54,013 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe_false-valid-deref.i [2018-12-02 20:26:54,058 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/data/04590e110/7a3d2394823543a28240a8faaa99b2e1/FLAG90eed536f [2018-12-02 20:26:54,548 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 20:26:54,548 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/sv-benchmarks/c/array-memsafety/cstrchr_unsafe_false-valid-deref.i [2018-12-02 20:26:54,554 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/data/04590e110/7a3d2394823543a28240a8faaa99b2e1/FLAG90eed536f [2018-12-02 20:26:55,047 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/data/04590e110/7a3d2394823543a28240a8faaa99b2e1 [2018-12-02 20:26:55,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 20:26:55,056 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-02 20:26:55,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 20:26:55,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 20:26:55,062 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 20:26:55,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:26:55" (1/1) ... [2018-12-02 20:26:55,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@725a737b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55, skipping insertion in model container [2018-12-02 20:26:55,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:26:55" (1/1) ... [2018-12-02 20:26:55,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 20:26:55,098 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 20:26:55,251 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:26:55,256 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 20:26:55,312 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:26:55,334 INFO L195 MainTranslator]: Completed translation [2018-12-02 20:26:55,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55 WrapperNode [2018-12-02 20:26:55,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 20:26:55,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 20:26:55,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 20:26:55,335 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 20:26:55,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55" (1/1) ... [2018-12-02 20:26:55,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55" (1/1) ... [2018-12-02 20:26:55,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55" (1/1) ... [2018-12-02 20:26:55,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55" (1/1) ... [2018-12-02 20:26:55,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55" (1/1) ... [2018-12-02 20:26:55,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55" (1/1) ... [2018-12-02 20:26:55,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55" (1/1) ... [2018-12-02 20:26:55,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 20:26:55,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 20:26:55,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 20:26:55,365 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 20:26:55,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/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 [2018-12-02 20:26:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 20:26:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 20:26:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-12-02 20:26:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-12-02 20:26:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-12-02 20:26:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrchr [2018-12-02 20:26:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-02 20:26:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-02 20:26:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-02 20:26:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-02 20:26:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-02 20:26:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-02 20:26:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-02 20:26:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure cstrchr [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 20:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 20:26:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 20:26:55,609 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 20:26:55,609 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 20:26:55,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:26:55 BoogieIcfgContainer [2018-12-02 20:26:55,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 20:26:55,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 20:26:55,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 20:26:55,612 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 20:26:55,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:26:55" (1/3) ... [2018-12-02 20:26:55,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3b6c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:26:55, skipping insertion in model container [2018-12-02 20:26:55,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:55" (2/3) ... [2018-12-02 20:26:55,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3b6c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:26:55, skipping insertion in model container [2018-12-02 20:26:55,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:26:55" (3/3) ... [2018-12-02 20:26:55,614 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrchr_unsafe_false-valid-deref.i [2018-12-02 20:26:55,620 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 20:26:55,625 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-12-02 20:26:55,635 INFO L257 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2018-12-02 20:26:55,650 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 20:26:55,650 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 20:26:55,650 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 20:26:55,650 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 20:26:55,651 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 20:26:55,651 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 20:26:55,651 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 20:26:55,651 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 20:26:55,651 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 20:26:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-12-02 20:26:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 20:26:55,665 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:55,666 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:26:55,667 INFO L423 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:55,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:55,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1404214304, now seen corresponding path program 1 times [2018-12-02 20:26:55,672 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:55,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:55,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:55,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:55,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:55,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:26:55,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 20:26:55,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 20:26:55,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 20:26:55,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 20:26:55,775 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2018-12-02 20:26:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:26:55,813 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-12-02 20:26:55,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 20:26:55,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 20:26:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:26:55,819 INFO L225 Difference]: With dead ends: 47 [2018-12-02 20:26:55,819 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 20:26:55,820 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 20:26:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 20:26:55,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-02 20:26:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 20:26:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-12-02 20:26:55,842 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 10 [2018-12-02 20:26:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:26:55,842 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-12-02 20:26:55,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 20:26:55,842 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-12-02 20:26:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 20:26:55,843 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:55,843 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:26:55,843 INFO L423 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:55,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:55,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1404214305, now seen corresponding path program 1 times [2018-12-02 20:26:55,843 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:55,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:55,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:55,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:55,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:55,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:26:55,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 20:26:55,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 20:26:55,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 20:26:55,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 20:26:55,878 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 4 states. [2018-12-02 20:26:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:26:55,892 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-12-02 20:26:55,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 20:26:55,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-02 20:26:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:26:55,893 INFO L225 Difference]: With dead ends: 43 [2018-12-02 20:26:55,893 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 20:26:55,893 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 20:26:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 20:26:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-02 20:26:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 20:26:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-12-02 20:26:55,896 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 10 [2018-12-02 20:26:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:26:55,896 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-12-02 20:26:55,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 20:26:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-12-02 20:26:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 20:26:55,897 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:55,897 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:26:55,897 INFO L423 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:55,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:55,897 INFO L82 PathProgramCache]: Analyzing trace with hash 846297827, now seen corresponding path program 1 times [2018-12-02 20:26:55,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:55,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:55,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:55,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:55,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:55,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:26:55,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 20:26:55,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 20:26:55,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 20:26:55,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 20:26:55,957 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 8 states. [2018-12-02 20:26:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:26:56,043 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-12-02 20:26:56,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 20:26:56,043 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-12-02 20:26:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:26:56,044 INFO L225 Difference]: With dead ends: 39 [2018-12-02 20:26:56,044 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 20:26:56,044 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-12-02 20:26:56,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 20:26:56,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-02 20:26:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 20:26:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-12-02 20:26:56,047 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 17 [2018-12-02 20:26:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:26:56,047 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-12-02 20:26:56,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 20:26:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-12-02 20:26:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 20:26:56,047 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:56,047 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:26:56,048 INFO L423 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:56,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:56,048 INFO L82 PathProgramCache]: Analyzing trace with hash 846297828, now seen corresponding path program 1 times [2018-12-02 20:26:56,048 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:56,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:56,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:56,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:56,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:56,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:26:56,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-02 20:26:56,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 20:26:56,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 20:26:56,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-02 20:26:56,136 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 10 states. [2018-12-02 20:26:56,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:26:56,239 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-12-02 20:26:56,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 20:26:56,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-12-02 20:26:56,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:26:56,242 INFO L225 Difference]: With dead ends: 49 [2018-12-02 20:26:56,242 INFO L226 Difference]: Without dead ends: 49 [2018-12-02 20:26:56,242 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-02 20:26:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-02 20:26:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-12-02 20:26:56,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-02 20:26:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-12-02 20:26:56,246 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 17 [2018-12-02 20:26:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:26:56,246 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-12-02 20:26:56,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 20:26:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-12-02 20:26:56,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 20:26:56,246 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:56,246 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:26:56,247 INFO L423 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:56,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:56,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1436098427, now seen corresponding path program 1 times [2018-12-02 20:26:56,247 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:56,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:56,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:56,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:56,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:56,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:26:56,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 20:26:56,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 20:26:56,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 20:26:56,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 20:26:56,269 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 3 states. [2018-12-02 20:26:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:26:56,274 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2018-12-02 20:26:56,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 20:26:56,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-02 20:26:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:26:56,275 INFO L225 Difference]: With dead ends: 47 [2018-12-02 20:26:56,275 INFO L226 Difference]: Without dead ends: 47 [2018-12-02 20:26:56,275 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 20:26:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-02 20:26:56,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-12-02 20:26:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-02 20:26:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2018-12-02 20:26:56,278 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 21 [2018-12-02 20:26:56,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:26:56,278 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2018-12-02 20:26:56,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 20:26:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2018-12-02 20:26:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 20:26:56,278 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:56,278 INFO L402 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] [2018-12-02 20:26:56,279 INFO L423 AbstractCegarLoop]: === Iteration 6 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:56,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:56,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1400225912, now seen corresponding path program 1 times [2018-12-02 20:26:56,279 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:56,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:56,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:56,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:56,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:56,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:26:56,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-02 20:26:56,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 20:26:56,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 20:26:56,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-12-02 20:26:56,395 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 12 states. [2018-12-02 20:26:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:26:56,531 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2018-12-02 20:26:56,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-02 20:26:56,531 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2018-12-02 20:26:56,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:26:56,532 INFO L225 Difference]: With dead ends: 72 [2018-12-02 20:26:56,532 INFO L226 Difference]: Without dead ends: 72 [2018-12-02 20:26:56,532 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-12-02 20:26:56,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-12-02 20:26:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2018-12-02 20:26:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-12-02 20:26:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2018-12-02 20:26:56,536 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 23 [2018-12-02 20:26:56,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:26:56,536 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2018-12-02 20:26:56,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 20:26:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2018-12-02 20:26:56,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 20:26:56,537 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:56,537 INFO L402 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] [2018-12-02 20:26:56,537 INFO L423 AbstractCegarLoop]: === Iteration 7 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:56,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:56,537 INFO L82 PathProgramCache]: Analyzing trace with hash 379157558, now seen corresponding path program 1 times [2018-12-02 20:26:56,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:56,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:56,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:56,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:56,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:56,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 20:26:56,711 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 20:26:56,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:56,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:26:56,771 INFO L478 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 [2018-12-02 20:26:56,773 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 20:26:56,778 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 20:26:56,778 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-02 20:26:56,796 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-02 20:26:56,797 INFO L478 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 12 treesize of output 11 [2018-12-02 20:26:56,798 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 20:26:56,799 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 20:26:56,800 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 20:26:56,800 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-12-02 20:26:56,892 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-12-02 20:26:56,898 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 12 [2018-12-02 20:26:56,898 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-02 20:26:56,901 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 20:26:56,906 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 20:26:56,906 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:34 [2018-12-02 20:26:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:57,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 20:26:57,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2018-12-02 20:26:57,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-02 20:26:57,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-02 20:26:57,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2018-12-02 20:26:57,033 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 24 states. [2018-12-02 20:26:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:26:57,694 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2018-12-02 20:26:57,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-02 20:26:57,694 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 23 [2018-12-02 20:26:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:26:57,695 INFO L225 Difference]: With dead ends: 75 [2018-12-02 20:26:57,695 INFO L226 Difference]: Without dead ends: 75 [2018-12-02 20:26:57,695 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406 [2018-12-02 20:26:57,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-12-02 20:26:57,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2018-12-02 20:26:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-12-02 20:26:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2018-12-02 20:26:57,698 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 23 [2018-12-02 20:26:57,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:26:57,698 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2018-12-02 20:26:57,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-02 20:26:57,698 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2018-12-02 20:26:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 20:26:57,699 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:57,699 INFO L402 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, 1, 1] [2018-12-02 20:26:57,699 INFO L423 AbstractCegarLoop]: === Iteration 8 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:57,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:57,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1269912289, now seen corresponding path program 1 times [2018-12-02 20:26:57,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:57,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:57,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:57,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:57,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:57,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:26:57,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-02 20:26:57,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 20:26:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 20:26:57,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-02 20:26:57,736 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 10 states. [2018-12-02 20:26:57,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:26:57,810 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-12-02 20:26:57,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 20:26:57,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-12-02 20:26:57,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:26:57,811 INFO L225 Difference]: With dead ends: 61 [2018-12-02 20:26:57,811 INFO L226 Difference]: Without dead ends: 61 [2018-12-02 20:26:57,811 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-12-02 20:26:57,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-12-02 20:26:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2018-12-02 20:26:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-02 20:26:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-12-02 20:26:57,814 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 26 [2018-12-02 20:26:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:26:57,815 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-12-02 20:26:57,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 20:26:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-12-02 20:26:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 20:26:57,815 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:57,816 INFO L402 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, 1, 1] [2018-12-02 20:26:57,816 INFO L423 AbstractCegarLoop]: === Iteration 9 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:57,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:57,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1269912288, now seen corresponding path program 1 times [2018-12-02 20:26:57,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:57,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:57,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:57,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:57,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:26:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:26:57,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:26:57,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-02 20:26:57,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 20:26:57,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 20:26:57,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-12-02 20:26:57,890 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 11 states. [2018-12-02 20:26:57,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:26:57,967 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2018-12-02 20:26:57,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 20:26:57,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-12-02 20:26:57,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:26:57,968 INFO L225 Difference]: With dead ends: 77 [2018-12-02 20:26:57,968 INFO L226 Difference]: Without dead ends: 77 [2018-12-02 20:26:57,969 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2018-12-02 20:26:57,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-02 20:26:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2018-12-02 20:26:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-12-02 20:26:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2018-12-02 20:26:57,972 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 26 [2018-12-02 20:26:57,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:26:57,972 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2018-12-02 20:26:57,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 20:26:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2018-12-02 20:26:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 20:26:57,972 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:26:57,972 INFO L402 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, 1, 1] [2018-12-02 20:26:57,973 INFO L423 AbstractCegarLoop]: === Iteration 10 === [build_nondet_StringErr0REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-02 20:26:57,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:26:57,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1268065247, now seen corresponding path program 1 times [2018-12-02 20:26:57,973 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:26:57,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:26:57,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:57,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:26:57,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:26:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:26:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:26:58,007 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 20:26:58,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:26:58 BoogieIcfgContainer [2018-12-02 20:26:58,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 20:26:58,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 20:26:58,031 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 20:26:58,031 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 20:26:58,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:26:55" (3/4) ... [2018-12-02 20:26:58,033 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 20:26:58,069 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a863efff-379c-4224-a76e-e3f3c7a388b2/bin-2019/uautomizer/witness.graphml [2018-12-02 20:26:58,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 20:26:58,070 INFO L168 Benchmark]: Toolchain (without parser) took 3015.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 949.5 MB in the beginning and 933.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 186.4 MB. Max. memory is 11.5 GB. [2018-12-02 20:26:58,071 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:26:58,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.5 MB). Free memory was 949.5 MB in the beginning and 1.0 GB in the end (delta: -99.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-02 20:26:58,071 INFO L168 Benchmark]: Boogie Preprocessor took 29.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2018-12-02 20:26:58,072 INFO L168 Benchmark]: RCFGBuilder took 244.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 11.5 GB. [2018-12-02 20:26:58,072 INFO L168 Benchmark]: TraceAbstraction took 2420.57 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 104.9 MB). Free memory was 1.0 GB in the beginning and 933.5 MB in the end (delta: 67.2 MB). Peak memory consumption was 172.0 MB. Max. memory is 11.5 GB. [2018-12-02 20:26:58,072 INFO L168 Benchmark]: Witness Printer took 38.71 ms. Allocated memory is still 1.2 GB. Free memory is still 933.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:26:58,074 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.5 MB). Free memory was 949.5 MB in the beginning and 1.0 GB in the end (delta: -99.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 244.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2420.57 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 104.9 MB). Free memory was 1.0 GB in the beginning and 933.5 MB in the end (delta: 67.2 MB). Peak memory consumption was 172.0 MB. Max. memory is 11.5 GB. * Witness Printer took 38.71 ms. Allocated memory is still 1.2 GB. Free memory is still 933.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 557]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L556] CALL, EXPR build_nondet_String() [L541] int length = __VERIFIER_nondet_int(); [L542] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L545] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L546] nondetString[length-1] = '\0' VAL [length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L547] return nondetString; VAL [\result={4:0}, length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L556] RET, EXPR build_nondet_String() VAL [build_nondet_String()={4:0}] [L556] char* s = build_nondet_String(); [L557] CALL cstrchr(s,__VERIFIER_nondet_int()) VAL [\old(c)=1, s={4:0}] [L551] EXPR \read(*s) VAL [\old(c)=1, \read(*s)=0, c=1, s={4:0}, s={4:0}] [L551] *s != '\0' && *s != (char)c VAL [*s != '\0' && *s != (char)c=0, \old(c)=1, \read(*s)=0, c=1, s={4:0}, s={4:0}] [L551] COND FALSE !(*s != '\0' && *s != (char)c) [L553] EXPR \read(*s) VAL [\old(c)=1, \read(*s)=0, c=1, s={4:0}, s={4:0}] [L553] EXPR (*s == c) ? (char *) s : 0 VAL [(*s == c) ? (char *) s : 0={0:0}, \old(c)=1, \read(*s)=0, c=1, s={4:0}, s={4:0}] [L553] return ( (*s == c) ? (char *) s : 0 ); [L557] RET cstrchr(s,__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=1, cstrchr(s,__VERIFIER_nondet_int())={0:0}, s={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 54 locations, 13 error locations. UNSAFE Result, 2.3s OverallTime, 10 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 287 SDtfs, 368 SDslu, 1353 SDs, 0 SdLazy, 1310 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 39 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 19785 SizeOfPredicates, 9 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...