./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 264dba86 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 932f76685ed1816d93a388d0ab1addae9c51483a --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true .............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-264dba8 [2019-11-21 12:25:16,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 12:25:16,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 12:25:16,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 12:25:16,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 12:25:16,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 12:25:16,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 12:25:16,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 12:25:16,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 12:25:16,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 12:25:16,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 12:25:16,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 12:25:16,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 12:25:16,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 12:25:16,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 12:25:16,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 12:25:16,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 12:25:16,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 12:25:16,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 12:25:16,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 12:25:16,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 12:25:16,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 12:25:16,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 12:25:16,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 12:25:16,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 12:25:16,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 12:25:16,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 12:25:16,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 12:25:16,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 12:25:16,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 12:25:16,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 12:25:16,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 12:25:16,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 12:25:16,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 12:25:16,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 12:25:16,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 12:25:16,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 12:25:16,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 12:25:16,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 12:25:16,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 12:25:16,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 12:25:16,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-21 12:25:16,287 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 12:25:16,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 12:25:16,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 12:25:16,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 12:25:16,289 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 12:25:16,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 12:25:16,290 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-21 12:25:16,290 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 12:25:16,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 12:25:16,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-21 12:25:16,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 12:25:16,291 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 12:25:16,292 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 12:25:16,292 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 12:25:16,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 12:25:16,293 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 12:25:16,293 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 12:25:16,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-21 12:25:16,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 12:25:16,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 12:25:16,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 12:25:16,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 12:25:16,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 12:25:16,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 12:25:16,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 12:25:16,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 12:25:16,297 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 12:25:16,297 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 12:25:16,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 12:25:16,298 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 932f76685ed1816d93a388d0ab1addae9c51483a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2019-11-21 12:25:16,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 12:25:16,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 12:25:16,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 12:25:16,622 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 12:25:16,624 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 12:25:16,625 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2019-11-21 12:25:16,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e97093b/26887d431ef644ba880d2503afe6ce00/FLAG276622d93 [2019-11-21 12:25:17,191 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 12:25:17,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2019-11-21 12:25:17,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e97093b/26887d431ef644ba880d2503afe6ce00/FLAG276622d93 [2019-11-21 12:25:17,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e97093b/26887d431ef644ba880d2503afe6ce00 [2019-11-21 12:25:17,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 12:25:17,524 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 12:25:17,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 12:25:17,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 12:25:17,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 12:25:17,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:25:17" (1/1) ... [2019-11-21 12:25:17,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585ae230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17, skipping insertion in model container [2019-11-21 12:25:17,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:25:17" (1/1) ... [2019-11-21 12:25:17,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 12:25:17,563 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 12:25:17,722 INFO L966 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-21 12:25:17,722 INFO L969 CHandler]: at location: C: (int*) numbers [15] [2019-11-21 12:25:17,723 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 12:25:17,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 12:25:17,737 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 12:25:17,738 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 12:25:17,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 12:25:17,750 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 12:25:17,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 12:25:17,846 INFO L205 MainTranslator]: Completed translation [2019-11-21 12:25:17,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17 WrapperNode [2019-11-21 12:25:17,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 12:25:17,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 12:25:17,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 12:25:17,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 12:25:17,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17" (1/1) ... [2019-11-21 12:25:17,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17" (1/1) ... [2019-11-21 12:25:17,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17" (1/1) ... [2019-11-21 12:25:17,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17" (1/1) ... [2019-11-21 12:25:17,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17" (1/1) ... [2019-11-21 12:25:17,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17" (1/1) ... [2019-11-21 12:25:17,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17" (1/1) ... [2019-11-21 12:25:17,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 12:25:17,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 12:25:17,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 12:25:17,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 12:25:17,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17" (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 [2019-11-21 12:25:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 12:25:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 12:25:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2019-11-21 12:25:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 12:25:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2019-11-21 12:25:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 12:25:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 12:25:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-21 12:25:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-11-21 12:25:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 12:25:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 12:25:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 12:25:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-21 12:25:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 12:25:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-21 12:25:18,260 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 12:25:18,260 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-21 12:25:18,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:25:18 BoogieIcfgContainer [2019-11-21 12:25:18,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 12:25:18,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 12:25:18,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 12:25:18,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 12:25:18,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:25:17" (1/3) ... [2019-11-21 12:25:18,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9cd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:25:18, skipping insertion in model container [2019-11-21 12:25:18,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:17" (2/3) ... [2019-11-21 12:25:18,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9cd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:25:18, skipping insertion in model container [2019-11-21 12:25:18,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:25:18" (3/3) ... [2019-11-21 12:25:18,268 INFO L109 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2019-11-21 12:25:18,275 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 12:25:18,281 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-21 12:25:18,290 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-21 12:25:18,311 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 12:25:18,311 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 12:25:18,311 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 12:25:18,311 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 12:25:18,312 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 12:25:18,312 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 12:25:18,312 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 12:25:18,312 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 12:25:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-21 12:25:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-21 12:25:18,335 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:25:18,336 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:25:18,336 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2019-11-21 12:25:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:25:18,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2019-11-21 12:25:18,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:25:18,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [343308443] [2019-11-21 12:25:18,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:25:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:25:18,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-21 12:25:18,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:25:18,529 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:25:18,530 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:25:18,542 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:25:18,543 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:25:18,543 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 12:25:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:25:18,589 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:25:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:25:18,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [343308443] [2019-11-21 12:25:18,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:25:18,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 12:25:18,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132004117] [2019-11-21 12:25:18,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 12:25:18,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:25:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 12:25:18,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 12:25:18,644 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-11-21 12:25:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:25:18,769 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-21 12:25:18,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 12:25:18,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-21 12:25:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:25:18,781 INFO L225 Difference]: With dead ends: 21 [2019-11-21 12:25:18,781 INFO L226 Difference]: Without dead ends: 18 [2019-11-21 12:25:18,783 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-21 12:25:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-21 12:25:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-21 12:25:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-21 12:25:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-21 12:25:18,820 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2019-11-21 12:25:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:25:18,821 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-21 12:25:18,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 12:25:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-21 12:25:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-21 12:25:18,821 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:25:18,822 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:25:19,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:25:19,024 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2019-11-21 12:25:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:25:19,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2019-11-21 12:25:19,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:25:19,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2040308892] [2019-11-21 12:25:19,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:25:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:25:19,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-21 12:25:19,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:25:19,150 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:25:19,151 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:25:19,159 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:25:19,160 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:25:19,160 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 12:25:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:25:19,211 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:25:19,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:25:19,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2040308892] [2019-11-21 12:25:19,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:25:19,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-21 12:25:19,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724282249] [2019-11-21 12:25:19,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 12:25:19,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:25:19,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 12:25:19,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-21 12:25:19,436 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2019-11-21 12:25:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:25:19,795 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-21 12:25:19,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 12:25:19,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-21 12:25:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:25:19,801 INFO L225 Difference]: With dead ends: 28 [2019-11-21 12:25:19,801 INFO L226 Difference]: Without dead ends: 28 [2019-11-21 12:25:19,802 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-21 12:25:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-21 12:25:19,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2019-11-21 12:25:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-21 12:25:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-21 12:25:19,809 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2019-11-21 12:25:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:25:19,809 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-21 12:25:19,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 12:25:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-21 12:25:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-21 12:25:19,811 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:25:19,811 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:25:20,013 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:25:20,014 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2019-11-21 12:25:20,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:25:20,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2019-11-21 12:25:20,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:25:20,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [949282392] [2019-11-21 12:25:20,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:25:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:25:20,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 12:25:20,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:25:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:25:20,265 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:25:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:25:20,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [949282392] [2019-11-21 12:25:20,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:25:20,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2019-11-21 12:25:20,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924710571] [2019-11-21 12:25:20,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 12:25:20,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:25:20,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 12:25:20,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-21 12:25:20,609 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 11 states. [2019-11-21 12:25:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:25:20,975 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-11-21 12:25:20,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 12:25:20,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2019-11-21 12:25:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:25:20,978 INFO L225 Difference]: With dead ends: 25 [2019-11-21 12:25:20,978 INFO L226 Difference]: Without dead ends: 23 [2019-11-21 12:25:20,979 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-11-21 12:25:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-21 12:25:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-21 12:25:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-21 12:25:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-11-21 12:25:20,987 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2019-11-21 12:25:20,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:25:20,987 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-11-21 12:25:20,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 12:25:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-11-21 12:25:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-21 12:25:20,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:25:20,989 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:25:21,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:25:21,193 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2019-11-21 12:25:21,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:25:21,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1004346541, now seen corresponding path program 1 times [2019-11-21 12:25:21,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:25:21,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [750834995] [2019-11-21 12:25:21,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:25:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 12:25:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 12:25:21,387 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 12:25:21,387 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 12:25:21,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:25:21,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:25:21 BoogieIcfgContainer [2019-11-21 12:25:21,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 12:25:21,625 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 12:25:21,625 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 12:25:21,626 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 12:25:21,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:25:18" (3/4) ... [2019-11-21 12:25:21,628 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-21 12:25:21,680 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-21 12:25:21,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 12:25:21,682 INFO L168 Benchmark]: Toolchain (without parser) took 4158.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 955.0 MB in the beginning and 970.6 MB in the end (delta: -15.6 MB). Peak memory consumption was 132.7 MB. Max. memory is 11.5 GB. [2019-11-21 12:25:21,683 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 12:25:21,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-21 12:25:21,685 INFO L168 Benchmark]: Boogie Preprocessor took 42.72 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-21 12:25:21,685 INFO L168 Benchmark]: RCFGBuilder took 370.10 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-21 12:25:21,686 INFO L168 Benchmark]: TraceAbstraction took 3362.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.6 MB in the end (delta: 143.6 MB). Peak memory consumption was 143.6 MB. Max. memory is 11.5 GB. [2019-11-21 12:25:21,687 INFO L168 Benchmark]: Witness Printer took 54.95 ms. Allocated memory is still 1.2 GB. Free memory is still 970.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 12:25:21,690 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.72 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 370.10 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3362.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.6 MB in the end (delta: 143.6 MB). Peak memory consumption was 143.6 MB. Max. memory is 11.5 GB. * Witness Printer took 54.95 ms. Allocated memory is still 1.2 GB. Free memory is still 970.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; VAL [numbers={3:0}] [L15] CALL areNatural((int*) numbers) VAL [numbers={3:0}] [L2] int i = 0; VAL [i=0, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=0, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=0, numbers={3:0}, numbers={3:0}, numbers[i]=50462976] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=1, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=1, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=1, numbers={3:0}, numbers={3:0}, numbers[i]=117835012] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=2, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=2, numbers={3:0}, numbers={3:0}] [L4] numbers[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. Result: UNSAFE, OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 63 SDslu, 105 SDs, 0 SdLazy, 110 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 8572 SizeOfPredicates, 11 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...