./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memcleanup.prp --file /storage/repos/svcomp/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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/list-properties/simple_false-unreach-call_false-valid-memcleanup.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7716826f9b443d6310df8de2d829a4d2f71b85a7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memtrack) --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 21:05:56,390 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 21:05:56,392 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 21:05:56,411 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 21:05:56,412 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 21:05:56,413 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 21:05:56,414 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 21:05:56,416 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 21:05:56,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 21:05:56,419 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 21:05:56,420 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 21:05:56,420 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 21:05:56,421 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 21:05:56,422 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 21:05:56,424 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 21:05:56,424 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 21:05:56,425 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 21:05:56,427 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 21:05:56,430 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 21:05:56,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 21:05:56,433 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 21:05:56,434 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 21:05:56,436 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 21:05:56,437 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 21:05:56,437 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 21:05:56,438 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 21:05:56,439 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 21:05:56,440 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 21:05:56,441 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 21:05:56,442 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 21:05:56,443 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 21:05:56,444 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 21:05:56,444 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 21:05:56,444 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 21:05:56,445 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 21:05:56,446 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 21:05:56,447 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2019-01-14 21:05:56,468 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 21:05:56,468 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 21:05:56,470 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 21:05:56,470 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 21:05:56,470 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 21:05:56,470 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 21:05:56,470 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 21:05:56,472 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 21:05:56,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 21:05:56,472 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 21:05:56,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 21:05:56,472 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 21:05:56,472 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 21:05:56,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 21:05:56,473 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 21:05:56,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 21:05:56,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 21:05:56,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 21:05:56,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 21:05:56,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 21:05:56,475 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 21:05:56,475 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 21:05:56,475 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 21:05:56,476 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 21:05:56,476 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-memcleanup) ) 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 -> 7716826f9b443d6310df8de2d829a4d2f71b85a7 [2019-01-14 21:05:56,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 21:05:56,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 21:05:56,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 21:05:56,543 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 21:05:56,543 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 21:05:56,544 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2019-01-14 21:05:56,608 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/471741574/34740d26b9744254884be63353cb781e/FLAG376e19e5a [2019-01-14 21:05:57,142 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 21:05:57,143 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2019-01-14 21:05:57,157 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/471741574/34740d26b9744254884be63353cb781e/FLAG376e19e5a [2019-01-14 21:05:57,386 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/471741574/34740d26b9744254884be63353cb781e [2019-01-14 21:05:57,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 21:05:57,391 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 21:05:57,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 21:05:57,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 21:05:57,396 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 21:05:57,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:05:57" (1/1) ... [2019-01-14 21:05:57,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c2ce30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57, skipping insertion in model container [2019-01-14 21:05:57,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:05:57" (1/1) ... [2019-01-14 21:05:57,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 21:05:57,453 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 21:05:57,730 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:05:57,746 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 21:05:57,795 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:05:57,868 INFO L195 MainTranslator]: Completed translation [2019-01-14 21:05:57,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57 WrapperNode [2019-01-14 21:05:57,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 21:05:57,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 21:05:57,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 21:05:57,869 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 21:05:57,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57" (1/1) ... [2019-01-14 21:05:57,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57" (1/1) ... [2019-01-14 21:05:57,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57" (1/1) ... [2019-01-14 21:05:57,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57" (1/1) ... [2019-01-14 21:05:57,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57" (1/1) ... [2019-01-14 21:05:57,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57" (1/1) ... [2019-01-14 21:05:58,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57" (1/1) ... [2019-01-14 21:05:58,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 21:05:58,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 21:05:58,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 21:05:58,010 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 21:05:58,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57" (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 [2019-01-14 21:05:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 21:05:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 21:05:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-01-14 21:05:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 21:05:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-14 21:05:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-14 21:05:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-14 21:05:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-14 21:05:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-14 21:05:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-14 21:05:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-14 21:05:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-14 21:05:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-14 21:05:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-14 21:05:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-14 21:05:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-14 21:05:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-14 21:05:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-14 21:05:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-14 21:05:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-14 21:05:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-14 21:05:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-14 21:05:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-14 21:05:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-14 21:05:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-14 21:05:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-14 21:05:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-14 21:05:58,080 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-14 21:05:58,080 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-14 21:05:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-14 21:05:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-14 21:05:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-14 21:05:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-14 21:05:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-14 21:05:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-14 21:05:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-14 21:05:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-14 21:05:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-14 21:05:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-14 21:05:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-14 21:05:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-14 21:05:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-14 21:05:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-14 21:05:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-14 21:05:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-14 21:05:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-14 21:05:58,085 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-14 21:05:58,085 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-14 21:05:58,085 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-14 21:05:58,085 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-14 21:05:58,085 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-14 21:05:58,085 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-14 21:05:58,085 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-14 21:05:58,085 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-14 21:05:58,086 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-14 21:05:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-14 21:05:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-14 21:05:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-14 21:05:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-14 21:05:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-14 21:05:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-14 21:05:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-14 21:05:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-14 21:05:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-14 21:05:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-14 21:05:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-14 21:05:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-14 21:05:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-14 21:05:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-14 21:05:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-14 21:05:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-14 21:05:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-14 21:05:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-14 21:05:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-14 21:05:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-14 21:05:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-14 21:05:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-14 21:05:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-14 21:05:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-14 21:05:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-14 21:05:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-14 21:05:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-14 21:05:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-14 21:05:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-14 21:05:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-14 21:05:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-14 21:05:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-14 21:05:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-14 21:05:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-14 21:05:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-14 21:05:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-14 21:05:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-14 21:05:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-14 21:05:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-14 21:05:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-14 21:05:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-14 21:05:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-14 21:05:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-14 21:05:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-14 21:05:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-14 21:05:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-14 21:05:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-14 21:05:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-14 21:05:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-14 21:05:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-14 21:05:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-14 21:05:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-14 21:05:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-01-14 21:05:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 21:05:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 21:05:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 21:05:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 21:05:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 21:05:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 21:05:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 21:05:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 21:05:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 21:05:58,398 INFO L695 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-01-14 21:05:58,816 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 21:05:58,817 INFO L286 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-14 21:05:58,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:05:58 BoogieIcfgContainer [2019-01-14 21:05:58,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 21:05:58,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 21:05:58,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 21:05:58,822 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 21:05:58,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 09:05:57" (1/3) ... [2019-01-14 21:05:58,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba2fad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 09:05:58, skipping insertion in model container [2019-01-14 21:05:58,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:05:57" (2/3) ... [2019-01-14 21:05:58,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba2fad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 09:05:58, skipping insertion in model container [2019-01-14 21:05:58,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:05:58" (3/3) ... [2019-01-14 21:05:58,825 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_false-unreach-call_false-valid-memcleanup.i [2019-01-14 21:05:58,835 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 21:05:58,843 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2019-01-14 21:05:58,860 INFO L257 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2019-01-14 21:05:58,886 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 21:05:58,887 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 21:05:58,887 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 21:05:58,887 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 21:05:58,888 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 21:05:58,888 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 21:05:58,888 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 21:05:58,888 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 21:05:58,888 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 21:05:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-01-14 21:05:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-14 21:05:58,915 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:05:58,916 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 21:05:58,918 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 21:05:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:05:58,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1369312263, now seen corresponding path program 1 times [2019-01-14 21:05:58,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:05:58,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:05:58,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:05:58,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:05:58,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:05:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:05:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 21:05:59,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 21:05:59,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 21:05:59,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 21:05:59,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 21:05:59,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 21:05:59,112 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2019-01-14 21:05:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:05:59,276 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2019-01-14 21:05:59,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 21:05:59,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-14 21:05:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:05:59,285 INFO L225 Difference]: With dead ends: 51 [2019-01-14 21:05:59,286 INFO L226 Difference]: Without dead ends: 43 [2019-01-14 21:05:59,287 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 [2019-01-14 21:05:59,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-01-14 21:05:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-01-14 21:05:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-01-14 21:05:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2019-01-14 21:05:59,321 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 9 [2019-01-14 21:05:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:05:59,321 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2019-01-14 21:05:59,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 21:05:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2019-01-14 21:05:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-14 21:05:59,322 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:05:59,322 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 21:05:59,323 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 21:05:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:05:59,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1369312264, now seen corresponding path program 1 times [2019-01-14 21:05:59,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:05:59,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:05:59,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:05:59,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:05:59,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:05:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:05:59,665 WARN L181 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2019-01-14 21:05:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 21:05:59,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 21:05:59,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 21:05:59,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 21:05:59,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 21:05:59,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 21:05:59,670 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 3 states. [2019-01-14 21:05:59,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:05:59,863 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2019-01-14 21:05:59,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 21:05:59,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-14 21:05:59,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:05:59,864 INFO L225 Difference]: With dead ends: 42 [2019-01-14 21:05:59,864 INFO L226 Difference]: Without dead ends: 42 [2019-01-14 21:05:59,865 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 [2019-01-14 21:05:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-01-14 21:05:59,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-01-14 21:05:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-01-14 21:05:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2019-01-14 21:05:59,871 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 9 [2019-01-14 21:05:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:05:59,872 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2019-01-14 21:05:59,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 21:05:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2019-01-14 21:05:59,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-14 21:05:59,874 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:05:59,874 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 21:05:59,874 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 21:05:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:05:59,875 INFO L82 PathProgramCache]: Analyzing trace with hash -417757206, now seen corresponding path program 1 times [2019-01-14 21:05:59,875 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:05:59,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:05:59,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:05:59,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:05:59,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:05:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:05:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 21:05:59,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 21:05:59,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 21:05:59,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 21:05:59,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 21:05:59,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 21:05:59,962 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 4 states. [2019-01-14 21:06:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:06:00,365 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2019-01-14 21:06:00,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 21:06:00,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-01-14 21:06:00,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:06:00,370 INFO L225 Difference]: With dead ends: 71 [2019-01-14 21:06:00,370 INFO L226 Difference]: Without dead ends: 71 [2019-01-14 21:06:00,370 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 21:06:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-01-14 21:06:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46. [2019-01-14 21:06:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-01-14 21:06:00,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-01-14 21:06:00,378 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 12 [2019-01-14 21:06:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:06:00,378 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-01-14 21:06:00,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 21:06:00,379 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-01-14 21:06:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-14 21:06:00,379 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:06:00,379 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 21:06:00,380 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 21:06:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:06:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash -417757205, now seen corresponding path program 1 times [2019-01-14 21:06:00,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:06:00,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:06:00,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:00,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:06:00,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:06:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 21:06:00,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 21:06:00,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 21:06:00,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 21:06:00,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 21:06:00,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 21:06:00,535 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 4 states. [2019-01-14 21:06:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:06:00,963 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2019-01-14 21:06:00,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 21:06:00,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-01-14 21:06:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:06:00,965 INFO L225 Difference]: With dead ends: 60 [2019-01-14 21:06:00,965 INFO L226 Difference]: Without dead ends: 60 [2019-01-14 21:06:00,965 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 21:06:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-01-14 21:06:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2019-01-14 21:06:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-01-14 21:06:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-01-14 21:06:00,972 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 12 [2019-01-14 21:06:00,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:06:00,972 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2019-01-14 21:06:00,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 21:06:00,972 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2019-01-14 21:06:00,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 21:06:00,973 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:06:00,973 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 21:06:00,974 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 21:06:00,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:06:00,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1889449163, now seen corresponding path program 1 times [2019-01-14 21:06:00,974 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:06:00,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:06:00,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:00,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:06:00,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:06:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 21:06:01,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 21:06:01,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 21:06:01,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 21:06:01,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 21:06:01,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 21:06:01,108 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2019-01-14 21:06:01,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:06:01,265 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2019-01-14 21:06:01,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 21:06:01,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-01-14 21:06:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:06:01,267 INFO L225 Difference]: With dead ends: 57 [2019-01-14 21:06:01,268 INFO L226 Difference]: Without dead ends: 57 [2019-01-14 21:06:01,268 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-14 21:06:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-01-14 21:06:01,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-01-14 21:06:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-01-14 21:06:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2019-01-14 21:06:01,274 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 17 [2019-01-14 21:06:01,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:06:01,275 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2019-01-14 21:06:01,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 21:06:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2019-01-14 21:06:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-14 21:06:01,276 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:06:01,276 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 21:06:01,276 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 21:06:01,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:06:01,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1561801763, now seen corresponding path program 1 times [2019-01-14 21:06:01,277 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:06:01,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:06:01,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:01,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:06:01,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:06:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 21:06:01,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 21:06:01,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 21:06:01,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 21:06:01,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 21:06:01,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 21:06:01,394 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2019-01-14 21:06:01,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:06:01,661 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2019-01-14 21:06:01,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 21:06:01,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-01-14 21:06:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:06:01,664 INFO L225 Difference]: With dead ends: 65 [2019-01-14 21:06:01,664 INFO L226 Difference]: Without dead ends: 65 [2019-01-14 21:06:01,665 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-01-14 21:06:01,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-01-14 21:06:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2019-01-14 21:06:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-01-14 21:06:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-01-14 21:06:01,671 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 20 [2019-01-14 21:06:01,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:06:01,672 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2019-01-14 21:06:01,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 21:06:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2019-01-14 21:06:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-14 21:06:01,674 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:06:01,674 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 21:06:01,675 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 21:06:01,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:06:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1561801762, now seen corresponding path program 1 times [2019-01-14 21:06:01,675 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:06:01,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:06:01,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:01,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:06:01,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:06:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 21:06:01,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 21:06:01,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 21:06:01,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 21:06:01,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 21:06:01,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 21:06:01,822 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 6 states. [2019-01-14 21:06:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:06:02,131 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2019-01-14 21:06:02,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-14 21:06:02,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-01-14 21:06:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:06:02,134 INFO L225 Difference]: With dead ends: 61 [2019-01-14 21:06:02,134 INFO L226 Difference]: Without dead ends: 61 [2019-01-14 21:06:02,135 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-01-14 21:06:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-01-14 21:06:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2019-01-14 21:06:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-01-14 21:06:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-01-14 21:06:02,140 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 20 [2019-01-14 21:06:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:06:02,140 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-01-14 21:06:02,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 21:06:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-01-14 21:06:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-01-14 21:06:02,142 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:06:02,142 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 21:06:02,142 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 21:06:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:06:02,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1699550851, now seen corresponding path program 1 times [2019-01-14 21:06:02,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:06:02,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:06:02,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:02,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:06:02,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:06:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 21:06:02,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 21:06:02,500 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-14 21:06:02,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:06:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:06:02,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 21:06:02,673 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2019-01-14 21:06:02,683 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-01-14 21:06:02,684 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,688 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,707 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2019-01-14 21:06:02,713 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-01-14 21:06:02,714 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,719 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,734 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,735 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2019-01-14 21:06:02,828 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-01-14 21:06:02,835 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2019-01-14 21:06:02,835 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,845 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,854 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-01-14 21:06:02,858 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2019-01-14 21:06:02,858 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,861 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,864 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 21:06:02,864 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-01-14 21:06:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 21:06:02,899 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 21:06:02,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 11 [2019-01-14 21:06:02,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-01-14 21:06:02,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-01-14 21:06:02,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-01-14 21:06:02,900 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 11 states. [2019-01-14 21:06:03,194 WARN L181 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2019-01-14 21:06:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:06:03,322 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2019-01-14 21:06:03,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-14 21:06:03,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2019-01-14 21:06:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:06:03,325 INFO L225 Difference]: With dead ends: 57 [2019-01-14 21:06:03,325 INFO L226 Difference]: Without dead ends: 57 [2019-01-14 21:06:03,326 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2019-01-14 21:06:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-01-14 21:06:03,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2019-01-14 21:06:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-01-14 21:06:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2019-01-14 21:06:03,331 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 21 [2019-01-14 21:06:03,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:06:03,331 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2019-01-14 21:06:03,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-01-14 21:06:03,332 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2019-01-14 21:06:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-01-14 21:06:03,333 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:06:03,334 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 21:06:03,334 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 21:06:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:06:03,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1146467520, now seen corresponding path program 1 times [2019-01-14 21:06:03,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:06:03,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:06:03,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:03,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:06:03,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:06:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:06:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:06:03,430 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 21:06:03,444 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-01-14 21:06:03,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 09:06:03 BoogieIcfgContainer [2019-01-14 21:06:03,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 21:06:03,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 21:06:03,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 21:06:03,459 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 21:06:03,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:05:58" (3/4) ... [2019-01-14 21:06:03,462 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 21:06:03,469 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-01-14 21:06:03,516 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 21:06:03,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 21:06:03,518 INFO L168 Benchmark]: Toolchain (without parser) took 6127.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.3 MB in the beginning and 831.1 MB in the end (delta: 116.2 MB). Peak memory consumption was 252.5 MB. Max. memory is 11.5 GB. [2019-01-14 21:06:03,519 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. [2019-01-14 21:06:03,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.70 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 920.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-01-14 21:06:03,521 INFO L168 Benchmark]: Boogie Preprocessor took 139.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 920.5 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2019-01-14 21:06:03,521 INFO L168 Benchmark]: RCFGBuilder took 808.69 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2019-01-14 21:06:03,522 INFO L168 Benchmark]: TraceAbstraction took 4639.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 837.9 MB in the end (delta: 238.6 MB). Peak memory consumption was 238.6 MB. Max. memory is 11.5 GB. [2019-01-14 21:06:03,524 INFO L168 Benchmark]: Witness Printer took 58.08 ms. Allocated memory is still 1.2 GB. Free memory was 837.9 MB in the beginning and 831.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-01-14 21:06:03,529 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 476.70 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 920.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 139.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 920.5 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 808.69 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4639.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 837.9 MB in the end (delta: 238.6 MB). Peak memory consumption was 238.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.08 ms. Allocated memory is still 1.2 GB. Free memory was 837.9 MB in the beginning and 831.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 626]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={3:0}, malloc(sizeof(struct node))={3:0}] [L628] COND FALSE !(a == 0) VAL [a={3:0}, malloc(sizeof(struct node))={3:0}] [L629] List t; [L630] List p = a; VAL [a={3:0}, malloc(sizeof(struct node))={3:0}, p={3:0}] [L631] a->h = 2 VAL [a={3:0}, malloc(sizeof(struct node))={3:0}, p={3:0}] [L632] COND FALSE !(__VERIFIER_nondet_int()) [L639] p->h = 2 VAL [a={3:0}, malloc(sizeof(struct node))={3:0}, p={3:0}] [L640] p->n = 0 VAL [a={3:0}, malloc(sizeof(struct node))={3:0}, p={3:0}] [L641] p = a VAL [a={3:0}, malloc(sizeof(struct node))={3:0}, p={3:0}] [L642] COND TRUE p!=0 VAL [a={3:0}, malloc(sizeof(struct node))={3:0}, p={3:0}] [L643] EXPR p->h VAL [a={3:0}, malloc(sizeof(struct node))={3:0}, p={3:0}, p->h=2] [L643] COND FALSE !(p->h != 2) [L646] EXPR p->n VAL [a={3:0}, malloc(sizeof(struct node))={3:0}, p={3:0}, p->n={0:0}] [L646] p = p->n [L642] COND FALSE !(p!=0) VAL [a={3:0}, malloc(sizeof(struct node))={3:0}, p={0:0}] [L648] return 0; VAL [\result=0, a={3:0}, malloc(sizeof(struct node))={3:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 17 error locations. UNSAFE Result, 4.5s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 209 SDtfs, 468 SDslu, 297 SDs, 0 SdLazy, 519 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 77 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 12156 SizeOfPredicates, 11 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...