./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.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/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.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 aa22a20876a8e4326d678ff2db099090fa4b56ec ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 22:43:41,117 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:43:41,119 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:43:41,134 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:43:41,135 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:43:41,137 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:43:41,142 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:43:41,144 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:43:41,146 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:43:41,147 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:43:41,147 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:43:41,148 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:43:41,149 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:43:41,150 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:43:41,152 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:43:41,153 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:43:41,154 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:43:41,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:43:41,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:43:41,160 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:43:41,161 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:43:41,163 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:43:41,165 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:43:41,166 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:43:41,166 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:43:41,167 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:43:41,168 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:43:41,169 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:43:41,170 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:43:41,172 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:43:41,172 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:43:41,173 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:43:41,173 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:43:41,174 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:43:41,175 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:43:41,175 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:43:41,176 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:43:41,191 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:43:41,192 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:43:41,193 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:43:41,193 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:43:41,193 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:43:41,194 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:43:41,194 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:43:41,194 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:43:41,195 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:43:41,195 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:43:41,195 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:43:41,195 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:43:41,195 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:43:41,196 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:43:41,196 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:43:41,196 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:43:41,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:43:41,196 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:43:41,198 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:43:41,198 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:43:41,199 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:43:41,199 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:43:41,199 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:43:41,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:43:41,199 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:43:41,200 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:43:41,201 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:43:41,201 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:43:41,201 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 -> aa22a20876a8e4326d678ff2db099090fa4b56ec [2018-11-28 22:43:41,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:43:41,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:43:41,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:43:41,263 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:43:41,263 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:43:41,265 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-11-28 22:43:41,332 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab445a760/b447a5544b4548ff845f1d3b0524347a/FLAGc1e7e198b [2018-11-28 22:43:41,807 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:43:41,808 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-11-28 22:43:41,819 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab445a760/b447a5544b4548ff845f1d3b0524347a/FLAGc1e7e198b [2018-11-28 22:43:42,136 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab445a760/b447a5544b4548ff845f1d3b0524347a [2018-11-28 22:43:42,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:43:42,142 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:43:42,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:42,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:43:42,147 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:43:42,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:42" (1/1) ... [2018-11-28 22:43:42,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7e58fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42, skipping insertion in model container [2018-11-28 22:43:42,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:42" (1/1) ... [2018-11-28 22:43:42,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:43:42,225 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:43:42,535 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:42,546 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:43:42,589 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:42,652 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:43:42,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42 WrapperNode [2018-11-28 22:43:42,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:42,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:43:42,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:43:42,655 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:43:42,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42" (1/1) ... [2018-11-28 22:43:42,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42" (1/1) ... [2018-11-28 22:43:42,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42" (1/1) ... [2018-11-28 22:43:42,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42" (1/1) ... [2018-11-28 22:43:42,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42" (1/1) ... [2018-11-28 22:43:42,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42" (1/1) ... [2018-11-28 22:43:42,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42" (1/1) ... [2018-11-28 22:43:42,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:43:42,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:43:42,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:43:42,813 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:43:42,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42" (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 22:43:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:43:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:43:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 22:43:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 22:43:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2018-11-28 22:43:42,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:43:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 22:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 22:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:43:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:43:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:43:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:43:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:43:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:43:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:43:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:43:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:43:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:43:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:43:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:43:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:43:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:43:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:43:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:43:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:43:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:43:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:43:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:43:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:43:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:43:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:43:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:43:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:43:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:43:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:43:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:43:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:43:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:43:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:43:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:43:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:43:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:43:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:43:42,910 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:43:42,910 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:43:42,910 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:43:42,910 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:43:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:43:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:43:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:43:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:43:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:43:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:43:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:43:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:43:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:43:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:43:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:43:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:43:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:43:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:43:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:43:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:43:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:43:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:43:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:43:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:43:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:43:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:43:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:43:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:43:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:43:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:43:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:43:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:43:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:43:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:43:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:43:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:43:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:43:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:43:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:43:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:43:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:43:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:43:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:43:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:43:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:43:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:43:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:43:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:43:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2018-11-28 22:43:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:43:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:43:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:43:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:43:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:43:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:43:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:43:43,521 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:43:43,521 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 22:43:43,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:43 BoogieIcfgContainer [2018-11-28 22:43:43,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:43:43,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:43:43,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:43:43,526 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:43:43,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:43:42" (1/3) ... [2018-11-28 22:43:43,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a529851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:43, skipping insertion in model container [2018-11-28 22:43:43,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:42" (2/3) ... [2018-11-28 22:43:43,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a529851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:43, skipping insertion in model container [2018-11-28 22:43:43,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:43" (3/3) ... [2018-11-28 22:43:43,530 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-11-28 22:43:43,540 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:43:43,549 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 22:43:43,569 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 22:43:43,598 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:43:43,599 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:43:43,599 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:43:43,599 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:43:43,602 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:43:43,602 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:43:43,602 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:43:43,602 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:43:43,602 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:43:43,624 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-28 22:43:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:43:43,649 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:43,651 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:43,653 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:43,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:43,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1895989102, now seen corresponding path program 1 times [2018-11-28 22:43:43,665 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:43,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:43,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:43,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:43,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:43,902 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 22:43:43,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:43,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:43:43,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:43:43,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:43:43,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:43:43,928 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2018-11-28 22:43:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:44,077 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-28 22:43:44,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:43:44,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 22:43:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:44,087 INFO L225 Difference]: With dead ends: 29 [2018-11-28 22:43:44,088 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 22:43:44,089 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:43:44,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 22:43:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-11-28 22:43:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 22:43:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-11-28 22:43:44,125 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2018-11-28 22:43:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:44,125 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-11-28 22:43:44,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:43:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-11-28 22:43:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:43:44,126 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:44,126 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:44,127 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:44,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:44,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1895991024, now seen corresponding path program 1 times [2018-11-28 22:43:44,127 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:44,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:44,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:44,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:44,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:44,208 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 22:43:44,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:44,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:43:44,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:43:44,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:43:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:43:44,211 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2018-11-28 22:43:44,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:44,298 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-11-28 22:43:44,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:43:44,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 22:43:44,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:44,300 INFO L225 Difference]: With dead ends: 24 [2018-11-28 22:43:44,300 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 22:43:44,301 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 22:43:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 22:43:44,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-11-28 22:43:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 22:43:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-11-28 22:43:44,308 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2018-11-28 22:43:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:44,308 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-11-28 22:43:44,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:43:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-11-28 22:43:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:43:44,310 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:44,310 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:44,310 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:44,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:44,311 INFO L82 PathProgramCache]: Analyzing trace with hash 633507385, now seen corresponding path program 1 times [2018-11-28 22:43:44,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:44,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:44,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:44,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:44,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:44,534 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 22:43:44,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:44,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:43:44,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:43:44,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:43:44,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:44,536 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2018-11-28 22:43:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:44,861 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-28 22:43:44,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:43:44,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-28 22:43:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:44,862 INFO L225 Difference]: With dead ends: 21 [2018-11-28 22:43:44,862 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 22:43:44,863 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:43:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 22:43:44,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-28 22:43:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 22:43:44,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-28 22:43:44,867 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2018-11-28 22:43:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:44,868 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-28 22:43:44,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:43:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-28 22:43:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:43:44,869 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:44,869 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:44,869 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:44,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:44,870 INFO L82 PathProgramCache]: Analyzing trace with hash 633507386, now seen corresponding path program 1 times [2018-11-28 22:43:44,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:44,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:44,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:44,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:44,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:45,066 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 22:43:45,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:45,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 22:43:45,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 22:43:45,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 22:43:45,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 22:43:45,068 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 7 states. [2018-11-28 22:43:45,244 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 22:43:45,496 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 22:43:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:45,601 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-28 22:43:45,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:43:45,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-28 22:43:45,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:45,605 INFO L225 Difference]: With dead ends: 27 [2018-11-28 22:43:45,606 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 22:43:45,606 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-28 22:43:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 22:43:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-11-28 22:43:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 22:43:45,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-28 22:43:45,611 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2018-11-28 22:43:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:45,612 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-28 22:43:45,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 22:43:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-11-28 22:43:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:43:45,613 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:45,613 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:45,613 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:45,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:45,614 INFO L82 PathProgramCache]: Analyzing trace with hash 730618770, now seen corresponding path program 1 times [2018-11-28 22:43:45,614 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:45,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:45,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:45,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:45,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:45,785 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 22:43:45,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:45,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 22:43:45,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:43:45,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:43:45,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:45,788 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 6 states. [2018-11-28 22:43:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:45,847 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-28 22:43:45,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:43:45,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-28 22:43:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:45,850 INFO L225 Difference]: With dead ends: 31 [2018-11-28 22:43:45,850 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 22:43:45,851 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:45,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 22:43:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-11-28 22:43:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 22:43:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-28 22:43:45,861 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2018-11-28 22:43:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:45,865 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-28 22:43:45,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:43:45,865 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-28 22:43:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:43:45,868 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:45,868 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:45,868 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:45,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:45,869 INFO L82 PathProgramCache]: Analyzing trace with hash 337591760, now seen corresponding path program 1 times [2018-11-28 22:43:45,869 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:45,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:45,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:45,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:45,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:45,991 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 22:43:45,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:45,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:43:45,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:43:45,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:43:45,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:43:45,992 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2018-11-28 22:43:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:46,083 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2018-11-28 22:43:46,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:43:46,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-28 22:43:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:46,085 INFO L225 Difference]: With dead ends: 27 [2018-11-28 22:43:46,085 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 22:43:46,085 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:43:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 22:43:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-11-28 22:43:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 22:43:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-28 22:43:46,089 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 17 [2018-11-28 22:43:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:46,089 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-28 22:43:46,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:43:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-28 22:43:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 22:43:46,090 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:46,090 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:46,090 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:46,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:46,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1223076658, now seen corresponding path program 1 times [2018-11-28 22:43:46,091 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:46,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:46,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:46,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:46,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:46,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:46,257 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 22:43:46,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:46,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:46,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:43:46,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 22:43:46,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 22:43:46,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 22:43:46,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:43:46,459 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 8 states. [2018-11-28 22:43:46,760 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-28 22:43:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:46,761 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-28 22:43:46,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:43:46,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-11-28 22:43:46,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:46,764 INFO L225 Difference]: With dead ends: 28 [2018-11-28 22:43:46,764 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 22:43:46,765 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:43:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 22:43:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-28 22:43:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 22:43:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-28 22:43:46,768 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 18 [2018-11-28 22:43:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:46,768 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-28 22:43:46,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 22:43:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-28 22:43:46,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 22:43:46,769 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:46,769 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:46,770 INFO L423 AbstractCegarLoop]: === Iteration 8 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:46,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:46,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1924141236, now seen corresponding path program 1 times [2018-11-28 22:43:46,770 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:46,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:46,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:46,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:46,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:47,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:47,415 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:47,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:47,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:47,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:43:47,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-28 22:43:47,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 22:43:47,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 22:43:47,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-28 22:43:47,569 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-11-28 22:43:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:47,693 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-28 22:43:47,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 22:43:47,693 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-11-28 22:43:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:47,695 INFO L225 Difference]: With dead ends: 29 [2018-11-28 22:43:47,696 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 22:43:47,697 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-11-28 22:43:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 22:43:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-28 22:43:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 22:43:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-28 22:43:47,700 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2018-11-28 22:43:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:47,700 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-28 22:43:47,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 22:43:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-28 22:43:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 22:43:47,701 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:47,701 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:47,701 INFO L423 AbstractCegarLoop]: === Iteration 9 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:47,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:47,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2112660622, now seen corresponding path program 1 times [2018-11-28 22:43:47,702 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:47,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:47,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:47,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:47,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:48,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:48,104 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:48,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:48,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:48,169 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 [2018-11-28 22:43:48,171 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:43:48,187 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:43:48,188 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:12 [2018-11-28 22:43:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:48,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:43:48,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-11-28 22:43:48,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 22:43:48,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 22:43:48,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2018-11-28 22:43:48,495 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 19 states. [2018-11-28 22:43:48,865 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2018-11-28 22:43:49,038 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-28 22:43:49,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:49,144 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-28 22:43:49,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 22:43:49,146 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2018-11-28 22:43:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:49,147 INFO L225 Difference]: With dead ends: 24 [2018-11-28 22:43:49,147 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 22:43:49,148 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2018-11-28 22:43:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 22:43:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-11-28 22:43:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 22:43:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-28 22:43:49,152 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-11-28 22:43:49,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:49,152 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-28 22:43:49,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 22:43:49,152 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-28 22:43:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 22:43:49,153 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:49,153 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:49,154 INFO L423 AbstractCegarLoop]: === Iteration 10 === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:49,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:49,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1226710122, now seen corresponding path program 2 times [2018-11-28 22:43:49,154 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:49,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:49,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:49,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:49,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:49,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:49,533 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:49,545 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 22:43:49,571 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 22:43:49,571 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 22:43:49,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:49,590 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 [2018-11-28 22:43:49,590 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:43:49,718 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:43:49,718 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:12 [2018-11-28 22:43:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:50,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:43:50,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2018-11-28 22:43:50,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-28 22:43:50,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-28 22:43:50,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2018-11-28 22:43:50,102 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 24 states. [2018-11-28 22:43:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:51,398 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-28 22:43:51,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 22:43:51,399 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 22 [2018-11-28 22:43:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:51,399 INFO L225 Difference]: With dead ends: 27 [2018-11-28 22:43:51,399 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 22:43:51,400 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 22:43:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 22:43:51,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 22:43:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 22:43:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 22:43:51,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-28 22:43:51,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:51,401 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 22:43:51,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-28 22:43:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 22:43:51,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 22:43:51,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:43:51 BoogieIcfgContainer [2018-11-28 22:43:51,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:43:51,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:43:51,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:43:51,407 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:43:51,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:43" (3/4) ... [2018-11-28 22:43:51,411 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 22:43:51,417 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 22:43:51,417 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-11-28 22:43:51,418 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-11-28 22:43:51,418 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2018-11-28 22:43:51,418 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 22:43:51,422 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-11-28 22:43:51,422 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 22:43:51,422 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 22:43:51,475 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 22:43:51,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:43:51,476 INFO L168 Benchmark]: Toolchain (without parser) took 9335.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.4 MB). Free memory was 952.7 MB in the beginning and 985.5 MB in the end (delta: -32.8 MB). Peak memory consumption was 159.6 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:51,478 INFO L168 Benchmark]: CDTParser took 0.19 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 22:43:51,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.33 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 931.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:51,478 INFO L168 Benchmark]: Boogie Preprocessor took 158.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -169.2 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:51,479 INFO L168 Benchmark]: RCFGBuilder took 708.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:51,480 INFO L168 Benchmark]: TraceAbstraction took 7884.28 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 993.0 MB in the end (delta: 68.3 MB). Peak memory consumption was 141.7 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:51,480 INFO L168 Benchmark]: Witness Printer took 68.41 ms. Allocated memory is still 1.2 GB. Free memory was 993.0 MB in the beginning and 985.5 MB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:51,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 511.33 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 931.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 158.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -169.2 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 708.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7884.28 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 993.0 MB in the end (delta: 68.3 MB). Peak memory consumption was 141.7 MB. Max. memory is 11.5 GB. * Witness Printer took 68.41 ms. Allocated memory is still 1.2 GB. Free memory was 993.0 MB in the beginning and 985.5 MB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 3 error locations. SAFE Result, 7.8s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 174 SDtfs, 126 SDslu, 630 SDs, 0 SdLazy, 465 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=5, 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, 10 MinimizatonAttempts, 12 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 220 ConstructedInterpolants, 2 QuantifiedInterpolants, 24381 SizeOfPredicates, 30 NumberOfNonLiveVariables, 425 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 4/38 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...