./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 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 044ef52817dc7382960a6f0241b98ee90ba1b40d ................................................................................................................................................................................................................................................................................................................................................... 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 --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 01:38:41,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:38:41,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:38:41,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:38:41,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:38:41,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:38:41,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:38:41,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:38:41,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:38:41,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:38:41,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:38:41,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:38:41,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:38:41,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:38:41,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:38:41,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:38:41,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:38:41,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:38:41,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:38:41,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:38:41,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:38:41,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:38:41,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:38:41,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:38:41,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:38:41,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:38:41,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:38:41,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:38:41,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:38:41,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:38:41,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:38:41,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:38:41,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:38:41,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:38:41,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:38:41,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:38:41,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:38:41,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:38:41,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:38:41,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:38:41,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:38:41,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 01:38:41,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:38:41,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:38:41,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:38:41,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:38:41,875 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:38:41,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:38:41,875 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:38:41,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:38:41,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:38:41,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:38:41,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:38:41,877 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 01:38:41,877 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 01:38:41,877 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 01:38:41,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:38:41,877 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 01:38:41,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 01:38:41,878 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:38:41,878 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:38:41,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:38:41,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:38:41,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:38:41,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 01:38:41,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:38:41,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:38:41,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:38:41,880 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 01:38:41,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 01:38:41,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 01:38:41,880 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 044ef52817dc7382960a6f0241b98ee90ba1b40d [2019-11-20 01:38:42,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:38:42,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:38:42,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:38:42,027 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:38:42,027 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:38:42,027 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/../../sv-benchmarks/c/heap-manipulation/tree-1.i [2019-11-20 01:38:42,079 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/data/bb11e4068/fca4857d6de8418d89017483ed3a47d3/FLAGc2a554396 [2019-11-20 01:38:42,542 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:38:42,543 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/sv-benchmarks/c/heap-manipulation/tree-1.i [2019-11-20 01:38:42,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/data/bb11e4068/fca4857d6de8418d89017483ed3a47d3/FLAGc2a554396 [2019-11-20 01:38:42,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/data/bb11e4068/fca4857d6de8418d89017483ed3a47d3 [2019-11-20 01:38:42,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:38:42,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 01:38:42,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:38:42,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:38:42,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:38:42,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:38:42" (1/1) ... [2019-11-20 01:38:42,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15658a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:42, skipping insertion in model container [2019-11-20 01:38:42,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:38:42" (1/1) ... [2019-11-20 01:38:42,580 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:38:42,629 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:38:42,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:38:42,953 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:38:42,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:38:43,046 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:38:43,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43 WrapperNode [2019-11-20 01:38:43,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:38:43,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:38:43,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:38:43,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:38:43,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43" (1/1) ... [2019-11-20 01:38:43,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43" (1/1) ... [2019-11-20 01:38:43,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43" (1/1) ... [2019-11-20 01:38:43,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43" (1/1) ... [2019-11-20 01:38:43,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43" (1/1) ... [2019-11-20 01:38:43,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43" (1/1) ... [2019-11-20 01:38:43,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43" (1/1) ... [2019-11-20 01:38:43,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:38:43,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:38:43,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:38:43,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:38:43,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:38:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 01:38:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:38:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 01:38:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 01:38:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-11-20 01:38:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2019-11-20 01:38:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2019-11-20 01:38:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2019-11-20 01:38:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 01:38:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 01:38:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 01:38:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 01:38:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 01:38:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 01:38:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 01:38:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 01:38:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 01:38:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 01:38:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 01:38:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 01:38:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 01:38:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 01:38:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 01:38:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 01:38:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 01:38:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 01:38:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 01:38:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 01:38:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 01:38:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 01:38:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 01:38:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 01:38:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 01:38:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 01:38:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 01:38:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 01:38:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 01:38:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 01:38:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 01:38:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 01:38:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 01:38:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 01:38:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 01:38:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 01:38:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 01:38:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 01:38:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 01:38:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 01:38:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 01:38:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 01:38:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 01:38:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 01:38:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 01:38:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 01:38:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 01:38:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 01:38:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 01:38:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 01:38:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 01:38:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 01:38:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 01:38:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 01:38:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 01:38:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 01:38:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 01:38:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 01:38:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 01:38:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 01:38:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 01:38:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 01:38:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 01:38:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 01:38:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 01:38:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 01:38:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 01:38:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 01:38:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 01:38:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 01:38:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 01:38:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 01:38:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 01:38:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 01:38:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 01:38:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 01:38:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 01:38:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 01:38:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 01:38:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 01:38:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 01:38:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 01:38:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 01:38:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 01:38:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 01:38:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 01:38:43,215 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 01:38:43,215 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 01:38:43,215 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 01:38:43,215 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 01:38:43,215 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 01:38:43,215 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 01:38:43,215 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 01:38:43,216 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 01:38:43,216 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 01:38:43,216 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 01:38:43,216 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 01:38:43,216 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 01:38:43,216 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 01:38:43,217 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 01:38:43,217 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 01:38:43,217 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 01:38:43,217 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 01:38:43,217 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 01:38:43,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 01:38:43,218 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-11-20 01:38:43,218 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2019-11-20 01:38:43,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 01:38:43,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 01:38:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2019-11-20 01:38:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 01:38:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 01:38:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 01:38:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2019-11-20 01:38:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:38:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 01:38:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 01:38:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:38:44,247 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:38:44,247 INFO L285 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-20 01:38:44,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:38:44 BoogieIcfgContainer [2019-11-20 01:38:44,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:38:44,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 01:38:44,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 01:38:44,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 01:38:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:38:42" (1/3) ... [2019-11-20 01:38:44,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3318401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:38:44, skipping insertion in model container [2019-11-20 01:38:44,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:38:43" (2/3) ... [2019-11-20 01:38:44,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3318401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:38:44, skipping insertion in model container [2019-11-20 01:38:44,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:38:44" (3/3) ... [2019-11-20 01:38:44,255 INFO L109 eAbstractionObserver]: Analyzing ICFG tree-1.i [2019-11-20 01:38:44,264 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 01:38:44,270 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 64 error locations. [2019-11-20 01:38:44,280 INFO L249 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2019-11-20 01:38:44,297 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 01:38:44,298 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 01:38:44,298 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 01:38:44,298 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:38:44,298 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:38:44,298 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 01:38:44,298 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:38:44,299 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 01:38:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2019-11-20 01:38:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 01:38:44,329 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:38:44,330 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:38:44,330 INFO L410 AbstractCegarLoop]: === Iteration 1 === [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]=== [2019-11-20 01:38:44,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:38:44,335 INFO L82 PathProgramCache]: Analyzing trace with hash -210505210, now seen corresponding path program 1 times [2019-11-20 01:38:44,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:38:44,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [490201311] [2019-11-20 01:38:44,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:38:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:38:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:38:44,597 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 01:38:44,598 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 01:38:44,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:38:44,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 01:38:44 BoogieIcfgContainer [2019-11-20 01:38:44,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 01:38:44,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:38:44,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:38:44,814 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:38:44,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:38:44" (3/4) ... [2019-11-20 01:38:44,816 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 01:38:44,846 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fd5450fb-c233-4ed0-a76e-612fa649d293/bin/uautomizer/witness.graphml [2019-11-20 01:38:44,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:38:44,848 INFO L168 Benchmark]: Toolchain (without parser) took 2280.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 944.7 MB in the beginning and 993.2 MB in the end (delta: -48.5 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. [2019-11-20 01:38:44,849 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:38:44,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 01:38:44,850 INFO L168 Benchmark]: Boogie Preprocessor took 72.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:38:44,850 INFO L168 Benchmark]: RCFGBuilder took 1128.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. [2019-11-20 01:38:44,851 INFO L168 Benchmark]: TraceAbstraction took 564.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 993.2 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:38:44,851 INFO L168 Benchmark]: Witness Printer took 32.82 ms. Allocated memory is still 1.2 GB. Free memory is still 993.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:38:44,854 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 479.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1128.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 564.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 993.2 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 11.5 GB. * Witness Printer took 32.82 ms. Allocated memory is still 1.2 GB. Free memory is still 993.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 590]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L622] CALL create_tree() [L574] struct node *nodelast = ((void *)0); [L575] struct node *node = ((void *)0); VAL [node={0:0}, nodelast={0:0}] [L576] COND FALSE !(__VERIFIER_nondet_int()) [L590] node->parent = ((void *)0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 167 locations, 64 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...