./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/reverse_array_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/array-memsafety/reverse_array_unsafe_false-valid-deref.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 2b641e49e75a310172f60778d80b34a59b72d2ae ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-91b1670 [2018-11-28 22:43:12,822 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:43:12,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:43:12,844 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:43:12,845 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:43:12,846 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:43:12,847 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:43:12,850 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:43:12,852 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:43:12,853 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:43:12,854 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:43:12,854 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:43:12,856 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:43:12,857 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:43:12,859 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:43:12,859 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:43:12,861 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:43:12,863 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:43:12,865 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:43:12,867 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:43:12,868 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:43:12,870 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:43:12,873 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:43:12,873 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:43:12,874 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:43:12,875 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:43:12,876 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:43:12,877 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:43:12,878 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:43:12,880 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:43:12,880 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:43:12,881 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:43:12,882 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:43:12,882 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:43:12,883 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:43:12,884 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:43:12,885 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:43:12,908 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:43:12,908 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:43:12,909 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:43:12,913 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:43:12,914 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:43:12,914 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:43:12,914 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:43:12,914 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:43:12,914 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:43:12,914 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:43:12,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:43:12,916 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:43:12,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:43:12,916 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:43:12,916 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:43:12,916 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:43:12,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:43:12,917 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:43:12,917 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:43:12,917 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:43:12,917 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:43:12,917 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:43:12,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:43:12,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:43:12,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:43:12,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:43:12,918 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:43:12,918 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:43:12,919 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 -> /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 -> 2b641e49e75a310172f60778d80b34a59b72d2ae [2018-11-28 22:43:12,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:43:12,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:43:12,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:43:13,001 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:43:13,001 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:43:13,003 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/reverse_array_unsafe_false-valid-deref.i [2018-11-28 22:43:13,082 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275db5bdb/5f7162132d264b46a17d88d0eb9e0419/FLAGb9e8f28e2 [2018-11-28 22:43:13,644 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:43:13,649 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/reverse_array_unsafe_false-valid-deref.i [2018-11-28 22:43:13,664 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275db5bdb/5f7162132d264b46a17d88d0eb9e0419/FLAGb9e8f28e2 [2018-11-28 22:43:13,942 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275db5bdb/5f7162132d264b46a17d88d0eb9e0419 [2018-11-28 22:43:13,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:43:13,948 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:43:13,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:13,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:43:13,954 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:43:13,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:13" (1/1) ... [2018-11-28 22:43:13,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a68dabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:13, skipping insertion in model container [2018-11-28 22:43:13,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:13" (1/1) ... [2018-11-28 22:43:13,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:43:14,022 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:43:14,447 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:14,463 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:43:14,614 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:14,665 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:43:14,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14 WrapperNode [2018-11-28 22:43:14,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:14,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:43:14,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:43:14,667 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:43:14,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14" (1/1) ... [2018-11-28 22:43:14,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14" (1/1) ... [2018-11-28 22:43:14,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14" (1/1) ... [2018-11-28 22:43:14,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14" (1/1) ... [2018-11-28 22:43:14,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14" (1/1) ... [2018-11-28 22:43:14,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14" (1/1) ... [2018-11-28 22:43:14,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14" (1/1) ... [2018-11-28 22:43:14,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:43:14,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:43:14,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:43:14,766 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:43:14,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14" (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 [2018-11-28 22:43:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:43:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:43:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 22:43:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 22:43:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:43:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 22:43:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 22:43:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:43:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:43:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:43:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:43:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:43:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:43:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:43:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:43:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:43:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:43:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:43:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:43:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:43:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:43:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:43:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:43:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:43:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:43:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:43:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:43:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:43:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:43:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:43:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:43:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:43:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:43:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:43:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:43:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:43:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:43:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:43:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:43:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:43:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:43:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:43:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:43:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:43:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:43:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:43:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:43:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:43:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:43:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:43:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:43:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:43:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:43:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:43:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:43:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:43:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:43:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:43:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:43:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:43:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:43:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:43:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:43:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:43:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:43:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:43:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:43:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:43:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:43:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:43:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:43:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:43:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:43:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:43:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:43:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:43:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:43:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:43:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:43:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:43:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:43:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:43:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:43:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:43:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:43:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:43:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:43:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:43:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:43:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:43:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:43:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:43:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:43:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:43:14,860 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:43:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:43:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:43:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:43:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:43:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:43:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:43:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:43:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:43:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:43:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:43:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:43:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:43:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:43:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:43:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:43:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:43:14,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:43:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:43:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:43:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:43:15,678 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:43:15,679 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 22:43:15,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:15 BoogieIcfgContainer [2018-11-28 22:43:15,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:43:15,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:43:15,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:43:15,684 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:43:15,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:43:13" (1/3) ... [2018-11-28 22:43:15,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f499e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:15, skipping insertion in model container [2018-11-28 22:43:15,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:14" (2/3) ... [2018-11-28 22:43:15,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f499e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:15, skipping insertion in model container [2018-11-28 22:43:15,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:15" (3/3) ... [2018-11-28 22:43:15,688 INFO L112 eAbstractionObserver]: Analyzing ICFG reverse_array_unsafe_false-valid-deref.i [2018-11-28 22:43:15,699 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:43:15,709 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-11-28 22:43:15,729 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2018-11-28 22:43:15,756 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:43:15,757 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:43:15,757 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:43:15,758 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:43:15,758 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:43:15,758 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:43:15,758 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:43:15,758 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:43:15,758 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:43:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-11-28 22:43:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:43:15,788 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:15,789 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:15,792 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:43:15,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:15,798 INFO L82 PathProgramCache]: Analyzing trace with hash -315217275, now seen corresponding path program 1 times [2018-11-28 22:43:15,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:15,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:15,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:15,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:15,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:16,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:16,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:43:16,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:43:16,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:43:16,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:43:16,022 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2018-11-28 22:43:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:16,200 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2018-11-28 22:43:16,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:43:16,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 22:43:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:16,217 INFO L225 Difference]: With dead ends: 54 [2018-11-28 22:43:16,218 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 22:43:16,220 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 [2018-11-28 22:43:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 22:43:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-28 22:43:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-28 22:43:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-11-28 22:43:16,265 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 11 [2018-11-28 22:43:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:16,266 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-11-28 22:43:16,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:43:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-11-28 22:43:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:43:16,267 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:16,267 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:16,268 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:43:16,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:16,268 INFO L82 PathProgramCache]: Analyzing trace with hash -315217274, now seen corresponding path program 1 times [2018-11-28 22:43:16,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:16,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:16,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:16,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:16,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:16,483 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 8 [2018-11-28 22:43:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:16,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:16,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:43:16,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:43:16,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:43:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:43:16,488 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 3 states. [2018-11-28 22:43:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:16,617 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2018-11-28 22:43:16,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:43:16,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 22:43:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:16,620 INFO L225 Difference]: With dead ends: 95 [2018-11-28 22:43:16,621 INFO L226 Difference]: Without dead ends: 95 [2018-11-28 22:43:16,622 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:43:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-28 22:43:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 52. [2018-11-28 22:43:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 22:43:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-11-28 22:43:16,633 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 11 [2018-11-28 22:43:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:16,633 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-11-28 22:43:16,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:43:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-11-28 22:43:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:43:16,634 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:16,634 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:16,635 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:43:16,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:16,635 INFO L82 PathProgramCache]: Analyzing trace with hash -315157692, now seen corresponding path program 1 times [2018-11-28 22:43:16,635 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:16,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:16,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:16,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:16,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:16,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:16,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:43:16,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:43:16,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:43:16,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:43:16,715 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 4 states. [2018-11-28 22:43:16,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:16,865 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2018-11-28 22:43:16,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:43:16,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 22:43:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:16,868 INFO L225 Difference]: With dead ends: 63 [2018-11-28 22:43:16,868 INFO L226 Difference]: Without dead ends: 63 [2018-11-28 22:43:16,869 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:43:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-28 22:43:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2018-11-28 22:43:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-28 22:43:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2018-11-28 22:43:16,877 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 11 [2018-11-28 22:43:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:16,877 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2018-11-28 22:43:16,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:43:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2018-11-28 22:43:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:43:16,879 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:16,879 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:16,879 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:43:16,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash -315157651, now seen corresponding path program 1 times [2018-11-28 22:43:16,880 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:16,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:16,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:16,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:16,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:43:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:43:16,939 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:43:16,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:43:16 BoogieIcfgContainer [2018-11-28 22:43:16,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:43:16,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:43:16,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:43:16,965 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:43:16,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:15" (3/4) ... [2018-11-28 22:43:16,969 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 22:43:17,018 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 22:43:17,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:43:17,019 INFO L168 Benchmark]: Toolchain (without parser) took 3071.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -63.5 MB). Peak memory consumption was 74.4 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:17,020 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:17,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -161.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:17,022 INFO L168 Benchmark]: Boogie Preprocessor took 95.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:17,022 INFO L168 Benchmark]: RCFGBuilder took 916.25 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: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:17,023 INFO L168 Benchmark]: TraceAbstraction took 1283.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:17,024 INFO L168 Benchmark]: Witness Printer took 54.11 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. [2018-11-28 22:43:17,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 716.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -161.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 95.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 916.25 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: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1283.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. * Witness Printer took 54.11 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: 547]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j, tmp; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L544] COND FALSE !(length % 2 == 0) VAL [length=1] [L545] int *arr = __builtin_alloca (length); [L546] i=0 VAL [__builtin_alloca (length)={3:0}, arr={3:0}, i=0, length=1] [L546] COND TRUE i