./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/ldv-memsafety/memsetNonZero2_-write.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7785be5078a920429dc2d1af3a353f3d5cac6d6f ............................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 10:23:10,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 10:23:10,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 10:23:10,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 10:23:10,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 10:23:10,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 10:23:10,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 10:23:10,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 10:23:10,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 10:23:10,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 10:23:10,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 10:23:10,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 10:23:10,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 10:23:10,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 10:23:10,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 10:23:10,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 10:23:10,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 10:23:10,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 10:23:10,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 10:23:10,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 10:23:10,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 10:23:10,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 10:23:10,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 10:23:10,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 10:23:10,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 10:23:10,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 10:23:10,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 10:23:10,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 10:23:10,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 10:23:10,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 10:23:10,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 10:23:10,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 10:23:10,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 10:23:10,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 10:23:10,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 10:23:10,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 10:23:10,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 10:23:10,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 10:23:10,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 10:23:10,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 10:23:10,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 10:23:10,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-07-06 10:23:10,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 10:23:10,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 10:23:10,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 10:23:10,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 10:23:10,284 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 10:23:10,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 10:23:10,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 10:23:10,284 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 10:23:10,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 10:23:10,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 10:23:10,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 10:23:10,291 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-07-06 10:23:10,291 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-07-06 10:23:10,292 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-07-06 10:23:10,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 10:23:10,292 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-07-06 10:23:10,292 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 10:23:10,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 10:23:10,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 10:23:10,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 10:23:10,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 10:23:10,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 10:23:10,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 10:23:10,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 10:23:10,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 10:23:10,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 10:23:10,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 10:23:10,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7785be5078a920429dc2d1af3a353f3d5cac6d6f [2021-07-06 10:23:10,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 10:23:10,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 10:23:10,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 10:23:10,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 10:23:10,542 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 10:23:10,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2021-07-06 10:23:10,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562c7927a/9d8ac64961b94457800053b645cb0ee9/FLAG2c6bedb96 [2021-07-06 10:23:10,881 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 10:23:10,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2021-07-06 10:23:10,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562c7927a/9d8ac64961b94457800053b645cb0ee9/FLAG2c6bedb96 [2021-07-06 10:23:11,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562c7927a/9d8ac64961b94457800053b645cb0ee9 [2021-07-06 10:23:11,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 10:23:11,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-06 10:23:11,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 10:23:11,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 10:23:11,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 10:23:11,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cba4bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11, skipping insertion in model container [2021-07-06 10:23:11,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 10:23:11,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 10:23:11,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 10:23:11,424 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 10:23:11,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 10:23:11,440 INFO L208 MainTranslator]: Completed translation [2021-07-06 10:23:11,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11 WrapperNode [2021-07-06 10:23:11,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 10:23:11,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 10:23:11,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 10:23:11,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 10:23:11,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 10:23:11,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 10:23:11,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 10:23:11,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 10:23:11,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11" (1/1) ... [2021-07-06 10:23:11,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 10:23:11,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 10:23:11,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-06 10:23:11,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-06 10:23:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-07-06 10:23:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 10:23:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-07-06 10:23:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-07-06 10:23:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-07-06 10:23:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-07-06 10:23:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 10:23:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-07-06 10:23:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-06 10:23:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-07-06 10:23:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 10:23:11,627 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 10:23:11,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 10:23:11,683 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-06 10:23:11,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 10:23:11 BoogieIcfgContainer [2021-07-06 10:23:11,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 10:23:11,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 10:23:11,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 10:23:11,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 10:23:11,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 10:23:11" (1/3) ... [2021-07-06 10:23:11,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44646a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 10:23:11, skipping insertion in model container [2021-07-06 10:23:11,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:23:11" (2/3) ... [2021-07-06 10:23:11,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44646a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 10:23:11, skipping insertion in model container [2021-07-06 10:23:11,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 10:23:11" (3/3) ... [2021-07-06 10:23:11,691 INFO L111 eAbstractionObserver]: Analyzing ICFG memsetNonZero2_-write.c [2021-07-06 10:23:11,697 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 10:23:11,697 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-07-06 10:23:11,721 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr0REQUIRES_VIOLATION ======== [2021-07-06 10:23:11,725 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:23:11,726 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:23:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-07-06 10:23:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 10:23:11,738 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:23:11,738 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:23:11,739 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION] === [2021-07-06 10:23:11,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:23:11,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2021-07-06 10:23:11,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:23:11,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915564283] [2021-07-06 10:23:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:23:11,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:23:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:23:11,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:23:11,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:23:11,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:23:11,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:23:11,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:23:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:23:11,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:23:11,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:23:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:23:11,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:23:11,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915564283] [2021-07-06 10:23:11,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915564283] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:23:11,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:23:11,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 10:23:11,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351151776] [2021-07-06 10:23:11,867 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 10:23:11,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:23:11,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 10:23:11,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:23:11,877 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 10:23:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:23:11,918 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-07-06 10:23:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:23:11,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-07-06 10:23:11,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:23:11,923 INFO L225 Difference]: With dead ends: 19 [2021-07-06 10:23:11,923 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:23:11,924 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:23:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:23:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:23:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:23:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:23:11,958 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 10:23:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:23:11,958 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:23:11,958 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 10:23:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:23:11,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:23:11,961 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 10:23:11,961 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:23:11,963 INFO L303 ceAbstractionStarter]: Result for error location mainErr0REQUIRES_VIOLATION was SAFE (1/3) [2021-07-06 10:23:11,966 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr1REQUIRES_VIOLATION ======== [2021-07-06 10:23:11,969 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:23:11,969 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:23:11,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-07-06 10:23:11,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 10:23:11,972 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:23:11,972 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:23:11,972 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION] === [2021-07-06 10:23:11,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:23:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2021-07-06 10:23:11,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:23:11,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193001158] [2021-07-06 10:23:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:23:11,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:23:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 10:23:11,990 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 10:23:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 10:23:12,011 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 10:23:12,021 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 10:23:12,022 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-06 10:23:12,023 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 10:23:12,023 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:23:12,023 INFO L303 ceAbstractionStarter]: Result for error location mainErr1REQUIRES_VIOLATION was UNSAFE (2/3) [2021-07-06 10:23:12,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 10:23:12 BoogieIcfgContainer [2021-07-06 10:23:12,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 10:23:12,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 10:23:12,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 10:23:12,038 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 10:23:12,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 10:23:11" (3/4) ... [2021-07-06 10:23:12,039 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-06 10:23:12,061 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 10:23:12,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 10:23:12,063 INFO L168 Benchmark]: Toolchain (without parser) took 741.44 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 39.6 MB in the beginning and 36.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2021-07-06 10:23:12,064 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 40.6 MB in the end (delta: 50.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 10:23:12,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 117.54 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 30.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 10:23:12,066 INFO L168 Benchmark]: Boogie Preprocessor took 15.52 ms. Allocated memory is still 58.7 MB. Free memory was 30.9 MB in the beginning and 29.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 10:23:12,067 INFO L168 Benchmark]: RCFGBuilder took 226.41 ms. Allocated memory is still 58.7 MB. Free memory was 29.4 MB in the beginning and 32.7 MB in the end (delta: -3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 10:23:12,069 INFO L168 Benchmark]: TraceAbstraction took 351.25 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 32.1 MB in the beginning and 37.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-07-06 10:23:12,069 INFO L168 Benchmark]: Witness Printer took 24.80 ms. Allocated memory is still 75.5 MB. Free memory was 37.9 MB in the beginning and 36.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 10:23:12,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 40.6 MB in the end (delta: 50.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 117.54 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 30.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.52 ms. Allocated memory is still 58.7 MB. Free memory was 30.9 MB in the beginning and 29.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 226.41 ms. Allocated memory is still 58.7 MB. Free memory was 29.4 MB in the beginning and 32.7 MB in the end (delta: -3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 351.25 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 32.1 MB in the beginning and 37.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 24.80 ms. Allocated memory is still 75.5 MB. Free memory was 37.9 MB in the beginning and 36.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] struct compstat cstats ; VAL [cstats={2:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0REQUIRES_VIOLATION CFG has 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 243.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.5ms, AutomataDifference: 56.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 6 SDslu, 8 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.7ms SsaConstructionTime, 15.3ms SatisfiabilityAnalysisTime, 50.3ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr1REQUIRES_VIOLATION CFG has 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 56.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1ms SsaConstructionTime, 11.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-07-06 10:23:12,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...