./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 860f0cef2a2bc5e57220324712ded9016daf6ef5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-13 21:55:47,507 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-13 21:55:47,509 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-13 21:55:47,521 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-13 21:55:47,521 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-13 21:55:47,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-13 21:55:47,524 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-13 21:55:47,526 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-13 21:55:47,528 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-13 21:55:47,528 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-13 21:55:47,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-13 21:55:47,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-13 21:55:47,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-13 21:55:47,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-13 21:55:47,534 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-13 21:55:47,535 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-13 21:55:47,536 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-13 21:55:47,538 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-13 21:55:47,540 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-13 21:55:47,542 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-13 21:55:47,543 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-13 21:55:47,544 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-13 21:55:47,547 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-13 21:55:47,547 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-13 21:55:47,547 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-13 21:55:47,548 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-13 21:55:47,549 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-13 21:55:47,551 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-13 21:55:47,551 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-13 21:55:47,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-13 21:55:47,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-13 21:55:47,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-13 21:55:47,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-13 21:55:47,555 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-13 21:55:47,556 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-13 21:55:47,557 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-13 21:55:47,557 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-13 21:55:47,572 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-13 21:55:47,573 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-13 21:55:47,574 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-13 21:55:47,574 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-13 21:55:47,574 INFO L133 SettingsManager]: * Use SBE=true [2019-01-13 21:55:47,574 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-13 21:55:47,575 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-13 21:55:47,575 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-13 21:55:47,575 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-13 21:55:47,576 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-13 21:55:47,576 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-13 21:55:47,576 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-13 21:55:47,576 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-13 21:55:47,576 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-13 21:55:47,577 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-13 21:55:47,577 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-13 21:55:47,577 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-13 21:55:47,577 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-13 21:55:47,577 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-13 21:55:47,577 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-13 21:55:47,578 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-13 21:55:47,579 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-13 21:55:47,579 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-13 21:55:47,580 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-13 21:55:47,580 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-13 21:55:47,580 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-13 21:55:47,580 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860f0cef2a2bc5e57220324712ded9016daf6ef5 [2019-01-13 21:55:47,616 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-13 21:55:47,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-13 21:55:47,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-13 21:55:47,633 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-13 21:55:47,633 INFO L276 PluginConnector]: CDTParser initialized [2019-01-13 21:55:47,634 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2019-01-13 21:55:47,694 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a2707368/60527e23209945ae9ca7ff85566c7188/FLAG115f78a44 [2019-01-13 21:55:48,207 INFO L307 CDTParser]: Found 1 translation units. [2019-01-13 21:55:48,207 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2019-01-13 21:55:48,224 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a2707368/60527e23209945ae9ca7ff85566c7188/FLAG115f78a44 [2019-01-13 21:55:48,475 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a2707368/60527e23209945ae9ca7ff85566c7188 [2019-01-13 21:55:48,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-13 21:55:48,480 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-13 21:55:48,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-13 21:55:48,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-13 21:55:48,485 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-13 21:55:48,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 09:55:48" (1/1) ... [2019-01-13 21:55:48,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3faf14e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:48, skipping insertion in model container [2019-01-13 21:55:48,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 09:55:48" (1/1) ... [2019-01-13 21:55:48,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-13 21:55:48,536 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-13 21:55:48,863 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 21:55:48,877 INFO L191 MainTranslator]: Completed pre-run [2019-01-13 21:55:48,933 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 21:55:49,057 INFO L195 MainTranslator]: Completed translation [2019-01-13 21:55:49,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49 WrapperNode [2019-01-13 21:55:49,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-13 21:55:49,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-13 21:55:49,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-13 21:55:49,060 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-13 21:55:49,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49" (1/1) ... [2019-01-13 21:55:49,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49" (1/1) ... [2019-01-13 21:55:49,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49" (1/1) ... [2019-01-13 21:55:49,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49" (1/1) ... [2019-01-13 21:55:49,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49" (1/1) ... [2019-01-13 21:55:49,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49" (1/1) ... [2019-01-13 21:55:49,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49" (1/1) ... [2019-01-13 21:55:49,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-13 21:55:49,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-13 21:55:49,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-13 21:55:49,134 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-13 21:55:49,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49" (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 [2019-01-13 21:55:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-13 21:55:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-13 21:55:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-01-13 21:55:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-01-13 21:55:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-13 21:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-01-13 21:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-01-13 21:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-13 21:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-13 21:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-13 21:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-13 21:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-13 21:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-13 21:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-13 21:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-13 21:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-13 21:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-13 21:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-13 21:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-13 21:55:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-13 21:55:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-13 21:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-13 21:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-13 21:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-13 21:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-13 21:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-13 21:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-13 21:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-13 21:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-13 21:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-13 21:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-13 21:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-13 21:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-13 21:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-13 21:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-13 21:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-13 21:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-13 21:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-13 21:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-13 21:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-13 21:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-13 21:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-13 21:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-13 21:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-13 21:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-13 21:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-13 21:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-13 21:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-13 21:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-13 21:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-13 21:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-13 21:55:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-13 21:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-13 21:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-13 21:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-13 21:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-13 21:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-13 21:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-13 21:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-13 21:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-13 21:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-13 21:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-13 21:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-13 21:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-13 21:55:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-13 21:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-13 21:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-13 21:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-13 21:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-13 21:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-13 21:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-13 21:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-13 21:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-13 21:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-13 21:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-13 21:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-13 21:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-13 21:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-13 21:55:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-13 21:55:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-13 21:55:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-13 21:55:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-13 21:55:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-13 21:55:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-13 21:55:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-13 21:55:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-13 21:55:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-13 21:55:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-13 21:55:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-13 21:55:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-13 21:55:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-13 21:55:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-13 21:55:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-13 21:55:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-13 21:55:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-13 21:55:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-13 21:55:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-13 21:55:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-13 21:55:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-13 21:55:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-13 21:55:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-13 21:55:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-13 21:55:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-13 21:55:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-13 21:55:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-13 21:55:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-13 21:55:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-13 21:55:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-13 21:55:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-13 21:55:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-13 21:55:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-13 21:55:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-13 21:55:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-13 21:55:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-13 21:55:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-13 21:55:49,983 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-13 21:55:49,983 INFO L286 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-13 21:55:49,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 09:55:49 BoogieIcfgContainer [2019-01-13 21:55:49,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-13 21:55:49,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-13 21:55:49,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-13 21:55:49,990 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-13 21:55:49,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.01 09:55:48" (1/3) ... [2019-01-13 21:55:49,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f58f3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 09:55:49, skipping insertion in model container [2019-01-13 21:55:49,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:55:49" (2/3) ... [2019-01-13 21:55:49,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f58f3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 09:55:49, skipping insertion in model container [2019-01-13 21:55:49,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 09:55:49" (3/3) ... [2019-01-13 21:55:49,994 INFO L112 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i [2019-01-13 21:55:50,004 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-13 21:55:50,013 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2019-01-13 21:55:50,030 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2019-01-13 21:55:50,057 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-13 21:55:50,058 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-13 21:55:50,058 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-13 21:55:50,058 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-13 21:55:50,059 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-13 21:55:50,059 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-13 21:55:50,059 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-13 21:55:50,059 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-13 21:55:50,059 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-13 21:55:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2019-01-13 21:55:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-13 21:55:50,085 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:55:50,087 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:55:50,089 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION]=== [2019-01-13 21:55:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:55:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash -315217275, now seen corresponding path program 1 times [2019-01-13 21:55:50,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:55:50,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:55:50,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:50,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:55:50,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:55:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:55:50,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:55:50,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 21:55:50,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 21:55:50,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 21:55:50,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 21:55:50,309 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2019-01-13 21:55:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:55:50,488 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2019-01-13 21:55:50,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 21:55:50,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-01-13 21:55:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:55:50,501 INFO L225 Difference]: With dead ends: 54 [2019-01-13 21:55:50,501 INFO L226 Difference]: Without dead ends: 51 [2019-01-13 21:55:50,504 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 21:55:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-01-13 21:55:50,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-01-13 21:55:50,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-01-13 21:55:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2019-01-13 21:55:50,544 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 11 [2019-01-13 21:55:50,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:55:50,544 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2019-01-13 21:55:50,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 21:55:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2019-01-13 21:55:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-13 21:55:50,545 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:55:50,545 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:55:50,546 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION]=== [2019-01-13 21:55:50,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:55:50,546 INFO L82 PathProgramCache]: Analyzing trace with hash -315217274, now seen corresponding path program 1 times [2019-01-13 21:55:50,546 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:55:50,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:55:50,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:50,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:55:50,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:55:50,798 WARN L181 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 8 [2019-01-13 21:55:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:55:50,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:55:50,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 21:55:50,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 21:55:50,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 21:55:50,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 21:55:50,803 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 3 states. [2019-01-13 21:55:50,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:55:50,886 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2019-01-13 21:55:50,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 21:55:50,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-01-13 21:55:50,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:55:50,890 INFO L225 Difference]: With dead ends: 95 [2019-01-13 21:55:50,890 INFO L226 Difference]: Without dead ends: 95 [2019-01-13 21:55:50,892 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 21:55:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-01-13 21:55:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 52. [2019-01-13 21:55:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-01-13 21:55:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2019-01-13 21:55:50,902 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 11 [2019-01-13 21:55:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:55:50,902 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-01-13 21:55:50,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 21:55:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2019-01-13 21:55:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-13 21:55:50,904 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:55:50,904 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:55:50,905 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION]=== [2019-01-13 21:55:50,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:55:50,905 INFO L82 PathProgramCache]: Analyzing trace with hash -315157692, now seen corresponding path program 1 times [2019-01-13 21:55:50,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:55:50,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:55:50,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:50,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:55:50,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:55:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:55:50,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:55:50,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-13 21:55:50,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 21:55:50,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 21:55:50,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-13 21:55:50,969 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 4 states. [2019-01-13 21:55:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:55:51,080 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2019-01-13 21:55:51,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 21:55:51,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-13 21:55:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:55:51,083 INFO L225 Difference]: With dead ends: 63 [2019-01-13 21:55:51,084 INFO L226 Difference]: Without dead ends: 63 [2019-01-13 21:55:51,084 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-13 21:55:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-01-13 21:55:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2019-01-13 21:55:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-01-13 21:55:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2019-01-13 21:55:51,091 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 11 [2019-01-13 21:55:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:55:51,092 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2019-01-13 21:55:51,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 21:55:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2019-01-13 21:55:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-13 21:55:51,092 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:55:51,092 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:55:51,093 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION]=== [2019-01-13 21:55:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:55:51,094 INFO L82 PathProgramCache]: Analyzing trace with hash -315157651, now seen corresponding path program 1 times [2019-01-13 21:55:51,094 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:55:51,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:55:51,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:51,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:55:51,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:55:51,389 WARN L181 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2019-01-13 21:55:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:55:51,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:55:51,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-13 21:55:51,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-13 21:55:51,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-13 21:55:51,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-13 21:55:51,537 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 5 states. [2019-01-13 21:55:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:55:51,792 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2019-01-13 21:55:51,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 21:55:51,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-01-13 21:55:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:55:51,795 INFO L225 Difference]: With dead ends: 60 [2019-01-13 21:55:51,795 INFO L226 Difference]: Without dead ends: 60 [2019-01-13 21:55:51,796 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-13 21:55:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-01-13 21:55:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2019-01-13 21:55:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-01-13 21:55:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2019-01-13 21:55:51,804 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 11 [2019-01-13 21:55:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:55:51,805 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2019-01-13 21:55:51,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-13 21:55:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2019-01-13 21:55:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-01-13 21:55:51,807 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:55:51,807 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:55:51,808 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION]=== [2019-01-13 21:55:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:55:51,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1955811961, now seen corresponding path program 1 times [2019-01-13 21:55:51,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:55:51,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:55:51,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:51,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:55:51,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:55:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 21:55:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 21:55:51,869 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-13 21:55:51,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.01 09:55:51 BoogieIcfgContainer [2019-01-13 21:55:51,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-13 21:55:51,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-13 21:55:51,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-13 21:55:51,898 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-13 21:55:51,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 09:55:49" (3/4) ... [2019-01-13 21:55:51,903 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-13 21:55:51,955 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-13 21:55:51,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-13 21:55:51,957 INFO L168 Benchmark]: Toolchain (without parser) took 3478.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -69.3 MB). Peak memory consumption was 79.6 MB. Max. memory is 11.5 GB. [2019-01-13 21:55:51,959 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 21:55:51,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -202.3 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2019-01-13 21:55:51,961 INFO L168 Benchmark]: Boogie Preprocessor took 75.02 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: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-01-13 21:55:51,963 INFO L168 Benchmark]: RCFGBuilder took 851.53 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: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. [2019-01-13 21:55:51,964 INFO L168 Benchmark]: TraceAbstraction took 1911.09 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: 74.2 MB). Peak memory consumption was 74.2 MB. Max. memory is 11.5 GB. [2019-01-13 21:55:51,964 INFO L168 Benchmark]: Witness Printer took 58.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 21:55:51,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 576.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -202.3 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.02 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: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 851.53 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: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1911.09 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: 74.2 MB). Peak memory consumption was 74.2 MB. Max. memory is 11.5 GB. * Witness Printer took 58.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 549]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j, tmp; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L544] COND FALSE !(length % 2 == 0) VAL [length=1] [L545] int *arr = __builtin_alloca (length*sizeof(int)); [L546] i=0 VAL [__builtin_alloca (length*sizeof(int))={1:0}, arr={1:0}, i=0, length=1] [L546] COND TRUE i