./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/heap-manipulation/tree-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/heap-manipulation/tree-1.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 daa6bd618e8acf5db639c256f6cad62f101e97d0 ................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:04:46,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:04:46,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:04:46,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:04:46,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:04:46,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:04:46,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:04:46,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:04:46,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:04:46,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:04:46,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:04:46,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:04:46,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:04:46,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:04:46,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:04:46,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:04:46,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:04:46,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:04:46,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:04:46,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:04:46,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:04:46,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:04:46,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:04:46,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:04:46,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:04:46,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:04:46,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:04:46,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:04:46,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:04:46,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:04:46,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:04:46,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:04:46,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:04:46,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:04:46,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:04:46,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:04:46,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:04:46,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:04:46,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:04:46,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:04:46,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:04:46,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:04:46,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:04:46,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:04:46,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:04:46,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:04:46,173 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:04:46,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:04:46,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:04:46,174 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:04:46,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:04:46,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:04:46,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:04:46,175 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:04:46,175 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:04:46,175 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:04:46,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:04:46,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:04:46,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:04:46,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:04:46,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:04:46,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:04:46,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:04:46,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:04:46,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:04:46,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:04:46,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:04:46,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:04:46,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:04:46,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:04:46,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> daa6bd618e8acf5db639c256f6cad62f101e97d0 [2020-10-20 06:04:46,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:04:46,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:04:46,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:04:46,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:04:46,407 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:04:46,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-1.i [2020-10-20 06:04:46,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f65a9d3c9/ea6958c772124b85982faf087cbb647c/FLAG125e0c4f6 [2020-10-20 06:04:47,007 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:04:47,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-1.i [2020-10-20 06:04:47,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f65a9d3c9/ea6958c772124b85982faf087cbb647c/FLAG125e0c4f6 [2020-10-20 06:04:47,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f65a9d3c9/ea6958c772124b85982faf087cbb647c [2020-10-20 06:04:47,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:04:47,301 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:04:47,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:04:47,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:04:47,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:04:47,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:04:47" (1/1) ... [2020-10-20 06:04:47,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b09410a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47, skipping insertion in model container [2020-10-20 06:04:47,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:04:47" (1/1) ... [2020-10-20 06:04:47,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:04:47,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:04:47,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:04:47,848 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:04:47,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:04:47,988 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:04:47,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47 WrapperNode [2020-10-20 06:04:47,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:04:47,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:04:47,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:04:47,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:04:48,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47" (1/1) ... [2020-10-20 06:04:48,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47" (1/1) ... [2020-10-20 06:04:48,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47" (1/1) ... [2020-10-20 06:04:48,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47" (1/1) ... [2020-10-20 06:04:48,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47" (1/1) ... [2020-10-20 06:04:48,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47" (1/1) ... [2020-10-20 06:04:48,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47" (1/1) ... [2020-10-20 06:04:48,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:04:48,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:04:48,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:04:48,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:04:48,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47" (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 [2020-10-20 06:04:48,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:04:48,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:04:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:04:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:04:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:04:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-20 06:04:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2020-10-20 06:04:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2020-10-20 06:04:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2020-10-20 06:04:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:04:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:04:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:04:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:04:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:04:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:04:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:04:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:04:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:04:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:04:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:04:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:04:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:04:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:04:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:04:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:04:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:04:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:04:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:04:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:04:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:04:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:04:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:04:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:04:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:04:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:04:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:04:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:04:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:04:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:04:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:04:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:04:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:04:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:04:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:04:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:04:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:04:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:04:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:04:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:04:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:04:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:04:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:04:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:04:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:04:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:04:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:04:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:04:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:04:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:04:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:04:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:04:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:04:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:04:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:04:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:04:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:04:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:04:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:04:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:04:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:04:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:04:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:04:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-20 06:04:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:04:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:04:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:04:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:04:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:04:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:04:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:04:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:04:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:04:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:04:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:04:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:04:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:04:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:04:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:04:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:04:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:04:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:04:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:04:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:04:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:04:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:04:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:04:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:04:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:04:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:04:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:04:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:04:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:04:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:04:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:04:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:04:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:04:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:04:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:04:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:04:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:04:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:04:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:04:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:04:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:04:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:04:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:04:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:04:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:04:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-20 06:04:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2020-10-20 06:04:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:04:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:04:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2020-10-20 06:04:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:04:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:04:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:04:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2020-10-20 06:04:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:04:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:04:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:04:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:04:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:04:48,971 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:04:48,972 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-20 06:04:48,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:04:48 BoogieIcfgContainer [2020-10-20 06:04:48,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:04:48,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:04:48,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:04:48,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:04:48,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:04:47" (1/3) ... [2020-10-20 06:04:48,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48486653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:04:48, skipping insertion in model container [2020-10-20 06:04:48,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:47" (2/3) ... [2020-10-20 06:04:48,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48486653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:04:48, skipping insertion in model container [2020-10-20 06:04:48,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:04:48" (3/3) ... [2020-10-20 06:04:48,984 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-1.i [2020-10-20 06:04:48,996 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:04:49,004 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2020-10-20 06:04:49,020 INFO L253 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2020-10-20 06:04:49,042 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:04:49,043 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:04:49,043 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:04:49,043 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:04:49,043 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:04:49,044 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:04:49,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:04:49,044 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:04:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-10-20 06:04:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:04:49,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:04:49,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:04:49,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, create_treeErr13REQUIRES_VIOLATION, create_treeErr14REQUIRES_VIOLATION, create_treeErr15REQUIRES_VIOLATION, create_treeErr10REQUIRES_VIOLATION, create_treeErr11REQUIRES_VIOLATION, create_treeErr12REQUIRES_VIOLATION, create_treeErr18REQUIRES_VIOLATION, create_treeErr19REQUIRES_VIOLATION, create_treeErr20REQUIRES_VIOLATION, create_treeErr16REQUIRES_VIOLATION, create_treeErr17REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION, create_treeErr24REQUIRES_VIOLATION, create_treeErr0REQUIRES_VIOLATION, create_treeErr25REQUIRES_VIOLATION, create_treeErr4REQUIRES_VIOLATION, create_treeErr21REQUIRES_VIOLATION, create_treeErr3REQUIRES_VIOLATION, create_treeErr22REQUIRES_VIOLATION, create_treeErr2REQUIRES_VIOLATION, create_treeErr23REQUIRES_VIOLATION, create_treeErr7REQUIRES_VIOLATION, create_treeErr29REQUIRES_VIOLATION, create_treeErr6REQUIRES_VIOLATION, create_treeErr9REQUIRES_VIOLATION, create_treeErr5REQUIRES_VIOLATION, create_treeErr26REQUIRES_VIOLATION, create_treeErr27REQUIRES_VIOLATION, create_treeErr8REQUIRES_VIOLATION, create_treeErr28REQUIRES_VIOLATION, inspectErr9REQUIRES_VIOLATION, inspectErr4REQUIRES_VIOLATION, inspectErr2REQUIRES_VIOLATION, inspectErr8REQUIRES_VIOLATION, inspectErr3REQUIRES_VIOLATION, inspectErr6REQUIRES_VIOLATION, inspectErr1REQUIRES_VIOLATION, inspectErr7REQUIRES_VIOLATION, inspectErr5REQUIRES_VIOLATION, inspectErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_treeErr17ASSERT_VIOLATIONMEMORY_FREE, free_treeErr5REQUIRES_VIOLATION, free_treeErr10ASSERT_VIOLATIONMEMORY_FREE, free_treeErr7REQUIRES_VIOLATION, free_treeErr6REQUIRES_VIOLATION, free_treeErr8ASSERT_VIOLATIONMEMORY_FREE, free_treeErr19REQUIRES_VIOLATION, free_treeErr18REQUIRES_VIOLATION, free_treeErr9ASSERT_VIOLATIONMEMORY_FREE, free_treeErr11REQUIRES_VIOLATION, free_treeErr0REQUIRES_VIOLATION, free_treeErr21ASSERT_VIOLATIONMEMORY_FREE, free_treeErr20ASSERT_VIOLATIONMEMORY_FREE, free_treeErr12REQUIRES_VIOLATION, free_treeErr1REQUIRES_VIOLATION, free_treeErr22ASSERT_VIOLATIONMEMORY_FREE, free_treeErr3REQUIRES_VIOLATION, free_treeErr13REQUIRES_VIOLATION, free_treeErr2REQUIRES_VIOLATION, free_treeErr15ASSERT_VIOLATIONMEMORY_FREE, free_treeErr4REQUIRES_VIOLATION, free_treeErr16ASSERT_VIOLATIONMEMORY_FREE, free_treeErr14REQUIRES_VIOLATION]=== [2020-10-20 06:04:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:04:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1314657269, now seen corresponding path program 1 times [2020-10-20 06:04:49,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:04:49,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011125175] [2020-10-20 06:04:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:04:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:49,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:04:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:04:49,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011125175] [2020-10-20 06:04:49,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:04:49,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:04:49,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665618268] [2020-10-20 06:04:49,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:04:49,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:04:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:04:49,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:04:49,371 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-10-20 06:04:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:04:49,816 INFO L93 Difference]: Finished difference Result 216 states and 236 transitions. [2020-10-20 06:04:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:04:49,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 06:04:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:04:49,833 INFO L225 Difference]: With dead ends: 216 [2020-10-20 06:04:49,833 INFO L226 Difference]: Without dead ends: 211 [2020-10-20 06:04:49,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:04:49,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-20 06:04:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 169. [2020-10-20 06:04:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-20 06:04:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 185 transitions. [2020-10-20 06:04:49,906 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 185 transitions. Word has length 9 [2020-10-20 06:04:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:04:49,907 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 185 transitions. [2020-10-20 06:04:49,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:04:49,908 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 185 transitions. [2020-10-20 06:04:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:04:49,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:04:49,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:04:49,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:04:49,910 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, create_treeErr13REQUIRES_VIOLATION, create_treeErr14REQUIRES_VIOLATION, create_treeErr15REQUIRES_VIOLATION, create_treeErr10REQUIRES_VIOLATION, create_treeErr11REQUIRES_VIOLATION, create_treeErr12REQUIRES_VIOLATION, create_treeErr18REQUIRES_VIOLATION, create_treeErr19REQUIRES_VIOLATION, create_treeErr20REQUIRES_VIOLATION, create_treeErr16REQUIRES_VIOLATION, create_treeErr17REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION, create_treeErr24REQUIRES_VIOLATION, create_treeErr0REQUIRES_VIOLATION, create_treeErr25REQUIRES_VIOLATION, create_treeErr4REQUIRES_VIOLATION, create_treeErr21REQUIRES_VIOLATION, create_treeErr3REQUIRES_VIOLATION, create_treeErr22REQUIRES_VIOLATION, create_treeErr2REQUIRES_VIOLATION, create_treeErr23REQUIRES_VIOLATION, create_treeErr7REQUIRES_VIOLATION, create_treeErr29REQUIRES_VIOLATION, create_treeErr6REQUIRES_VIOLATION, create_treeErr9REQUIRES_VIOLATION, create_treeErr5REQUIRES_VIOLATION, create_treeErr26REQUIRES_VIOLATION, create_treeErr27REQUIRES_VIOLATION, create_treeErr8REQUIRES_VIOLATION, create_treeErr28REQUIRES_VIOLATION, inspectErr9REQUIRES_VIOLATION, inspectErr4REQUIRES_VIOLATION, inspectErr2REQUIRES_VIOLATION, inspectErr8REQUIRES_VIOLATION, inspectErr3REQUIRES_VIOLATION, inspectErr6REQUIRES_VIOLATION, inspectErr1REQUIRES_VIOLATION, inspectErr7REQUIRES_VIOLATION, inspectErr5REQUIRES_VIOLATION, inspectErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_treeErr17ASSERT_VIOLATIONMEMORY_FREE, free_treeErr5REQUIRES_VIOLATION, free_treeErr10ASSERT_VIOLATIONMEMORY_FREE, free_treeErr7REQUIRES_VIOLATION, free_treeErr6REQUIRES_VIOLATION, free_treeErr8ASSERT_VIOLATIONMEMORY_FREE, free_treeErr19REQUIRES_VIOLATION, free_treeErr18REQUIRES_VIOLATION, free_treeErr9ASSERT_VIOLATIONMEMORY_FREE, free_treeErr11REQUIRES_VIOLATION, free_treeErr0REQUIRES_VIOLATION, free_treeErr21ASSERT_VIOLATIONMEMORY_FREE, free_treeErr20ASSERT_VIOLATIONMEMORY_FREE, free_treeErr12REQUIRES_VIOLATION, free_treeErr1REQUIRES_VIOLATION, free_treeErr22ASSERT_VIOLATIONMEMORY_FREE, free_treeErr3REQUIRES_VIOLATION, free_treeErr13REQUIRES_VIOLATION, free_treeErr2REQUIRES_VIOLATION, free_treeErr15ASSERT_VIOLATIONMEMORY_FREE, free_treeErr4REQUIRES_VIOLATION, free_treeErr16ASSERT_VIOLATIONMEMORY_FREE, free_treeErr14REQUIRES_VIOLATION]=== [2020-10-20 06:04:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:04:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2099708289, now seen corresponding path program 1 times [2020-10-20 06:04:49,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:04:49,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704566457] [2020-10-20 06:04:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:04:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:04:49,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:04:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:04:49,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:04:49,982 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:04:49,982 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:04:49,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:04:50,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:04:50 BoogieIcfgContainer [2020-10-20 06:04:50,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:04:50,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:04:50,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:04:50,008 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:04:50,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:04:48" (3/4) ... [2020-10-20 06:04:50,011 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:04:50,052 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:04:50,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:04:50,055 INFO L168 Benchmark]: Toolchain (without parser) took 2757.77 ms. Allocated memory was 36.7 MB in the beginning and 57.7 MB in the end (delta: 21.0 MB). Free memory was 17.6 MB in the beginning and 23.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:50,056 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 34.1 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:04:50,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.19 ms. Allocated memory was 36.7 MB in the beginning and 46.1 MB in the end (delta: 9.4 MB). Free memory was 16.7 MB in the beginning and 26.5 MB in the end (delta: -9.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:50,058 INFO L168 Benchmark]: Boogie Preprocessor took 113.17 ms. Allocated memory is still 46.1 MB. Free memory was 26.5 MB in the beginning and 23.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:50,059 INFO L168 Benchmark]: RCFGBuilder took 870.66 ms. Allocated memory was 46.1 MB in the beginning and 52.4 MB in the end (delta: 6.3 MB). Free memory was 23.0 MB in the beginning and 30.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:50,060 INFO L168 Benchmark]: TraceAbstraction took 1031.42 ms. Allocated memory was 52.4 MB in the beginning and 57.7 MB in the end (delta: 5.2 MB). Free memory was 29.8 MB in the beginning and 25.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:50,061 INFO L168 Benchmark]: Witness Printer took 44.80 ms. Allocated memory is still 57.7 MB. Free memory was 25.1 MB in the beginning and 23.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:50,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 34.1 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 687.19 ms. Allocated memory was 36.7 MB in the beginning and 46.1 MB in the end (delta: 9.4 MB). Free memory was 16.7 MB in the beginning and 26.5 MB in the end (delta: -9.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 113.17 ms. Allocated memory is still 46.1 MB. Free memory was 26.5 MB in the beginning and 23.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 870.66 ms. Allocated memory was 46.1 MB in the beginning and 52.4 MB in the end (delta: 6.3 MB). Free memory was 23.0 MB in the beginning and 30.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1031.42 ms. Allocated memory was 52.4 MB in the beginning and 57.7 MB in the end (delta: 5.2 MB). Free memory was 29.8 MB in the beginning and 25.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Witness Printer took 44.80 ms. Allocated memory is still 57.7 MB. Free memory was 25.1 MB in the beginning and 23.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 601]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L633] CALL create_tree() [L585] struct node *nodelast = ((void *)0); [L586] struct node *node = ((void *)0); VAL [node={0:0}, nodelast={0:0}] [L587] COND FALSE !(__VERIFIER_nondet_int()) [L601] node->parent = ((void *)0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 174 locations, 65 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 95 SDslu, 4 SDs, 0 SdLazy, 169 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 42 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...