./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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/ArraysOfVariableLength2_-read.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 639853f2f40cff84155fe09902eff2b5a20185f5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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.seqcomp-5fbdf5b [2021-08-30 17:38:57,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:38:57,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:38:57,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:38:57,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:38:57,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:38:57,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:38:57,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:38:57,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:38:57,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:38:57,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:38:57,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:38:57,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:38:57,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:38:57,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:38:57,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:38:57,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:38:57,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:38:57,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:38:57,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:38:57,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:38:57,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:38:57,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:38:57,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:38:57,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:38:57,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:38:57,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:38:57,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:38:57,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:38:57,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:38:57,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:38:57,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:38:57,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:38:57,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:38:57,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:38:57,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:38:57,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:38:57,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:38:57,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:38:57,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:38:57,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:38:57,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:38:57,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:38:57,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:38:57,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:38:57,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:38:57,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:38:57,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:38:57,455 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:38:57,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:38:57,455 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:38:57,455 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:38:57,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:38:57,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:38:57,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:38:57,456 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:38:57,456 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:38:57,456 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:38:57,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:38:57,460 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:38:57,461 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:38:57,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:38:57,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:38:57,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:38:57,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:38:57,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:38:57,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:38:57,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:38:57,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:38:57,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:38:57,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:38:57,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 639853f2f40cff84155fe09902eff2b5a20185f5 [2021-08-30 17:38:57,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:38:57,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:38:57,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:38:57,753 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:38:57,753 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:38:57,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2021-08-30 17:38:57,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ce38492/2e58ecad3f024b7e8f0429c8d380bccc/FLAGf4a51003e [2021-08-30 17:38:58,240 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:38:58,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2021-08-30 17:38:58,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ce38492/2e58ecad3f024b7e8f0429c8d380bccc/FLAGf4a51003e [2021-08-30 17:38:58,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ce38492/2e58ecad3f024b7e8f0429c8d380bccc [2021-08-30 17:38:58,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:38:58,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:38:58,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:38:58,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:38:58,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:38:58,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fa98e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58, skipping insertion in model container [2021-08-30 17:38:58,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:38:58,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:38:58,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:38:58,425 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:38:58,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:38:58,456 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:38:58,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58 WrapperNode [2021-08-30 17:38:58,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:38:58,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:38:58,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:38:58,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:38:58,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:38:58,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:38:58,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:38:58,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:38:58,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58" (1/1) ... [2021-08-30 17:38:58,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:38:58,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:38:58,525 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) [2021-08-30 17:38:58,527 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 [2021-08-30 17:38:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:38:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:38:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-08-30 17:38:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-30 17:38:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:38:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-08-30 17:38:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 17:38:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-30 17:38:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:38:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 17:38:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:38:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:38:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:38:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:38:58,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:38:58,697 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-30 17:38:58,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:38:58 BoogieIcfgContainer [2021-08-30 17:38:58,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:38:58,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:38:58,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:38:58,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:38:58,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:38:58" (1/3) ... [2021-08-30 17:38:58,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710736ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:38:58, skipping insertion in model container [2021-08-30 17:38:58,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:38:58" (2/3) ... [2021-08-30 17:38:58,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710736ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:38:58, skipping insertion in model container [2021-08-30 17:38:58,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:38:58" (3/3) ... [2021-08-30 17:38:58,705 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-read.c [2021-08-30 17:38:58,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:38:58,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-30 17:38:58,742 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:38:58,748 INFO L339 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, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:38:58,748 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-30 17:38:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.65625) internal successors, (53), 43 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-30 17:38:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:38:58,766 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:38:58,766 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:38:58,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:38:58,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:38:58,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2021-08-30 17:38:58,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:38:58,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238384861] [2021-08-30 17:38:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:38:58,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:38:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:38:58,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:38:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:38:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:38:58,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:38:58,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238384861] [2021-08-30 17:38:58,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238384861] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:38:58,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:38:58,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:38:58,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379354333] [2021-08-30 17:38:58,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:38:58,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:38:59,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:38:59,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:38:59,018 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.65625) internal successors, (53), 43 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-08-30 17:38:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:38:59,177 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2021-08-30 17:38:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:38:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 10 [2021-08-30 17:38:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:38:59,196 INFO L225 Difference]: With dead ends: 52 [2021-08-30 17:38:59,196 INFO L226 Difference]: Without dead ends: 49 [2021-08-30 17:38:59,198 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:38:59,201 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.73ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.56ms IncrementalHoareTripleChecker+Time [2021-08-30 17:38:59,201 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 93 Unknown, 0 Unchecked, 1.73ms Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 141.56ms Time] [2021-08-30 17:38:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-30 17:38:59,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-30 17:38:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 41 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:38:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-08-30 17:38:59,236 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2021-08-30 17:38:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:38:59,237 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-08-30 17:38:59,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-08-30 17:38:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-08-30 17:38:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:38:59,238 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:38:59,238 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:38:59,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 17:38:59,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:38:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:38:59,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2021-08-30 17:38:59,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:38:59,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131334129] [2021-08-30 17:38:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:38:59,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:38:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:38:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:38:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:38:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:38:59,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:38:59,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131334129] [2021-08-30 17:38:59,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131334129] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:38:59,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:38:59,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 17:38:59,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679330320] [2021-08-30 17:38:59,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:38:59,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:38:59,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:38:59,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:38:59,340 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-08-30 17:38:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:38:59,476 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-08-30 17:38:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:38:59,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 10 [2021-08-30 17:38:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:38:59,480 INFO L225 Difference]: With dead ends: 56 [2021-08-30 17:38:59,481 INFO L226 Difference]: Without dead ends: 56 [2021-08-30 17:38:59,482 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.52ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:38:59,486 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 126.94ms IncrementalHoareTripleChecker+Time [2021-08-30 17:38:59,486 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 18 Invalid, 122 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 126.94ms Time] [2021-08-30 17:38:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-30 17:38:59,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2021-08-30 17:38:59,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 41 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:38:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-08-30 17:38:59,499 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2021-08-30 17:38:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:38:59,500 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-08-30 17:38:59,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-08-30 17:38:59,500 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-08-30 17:38:59,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 17:38:59,501 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:38:59,501 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:38:59,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 17:38:59,501 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:38:59,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:38:59,503 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2021-08-30 17:38:59,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:38:59,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064229084] [2021-08-30 17:38:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:38:59,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:38:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:38:59,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:38:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:38:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:38:59,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:38:59,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064229084] [2021-08-30 17:38:59,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064229084] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:38:59,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:38:59,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 17:38:59,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959445189] [2021-08-30 17:38:59,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:38:59,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:38:59,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:38:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:38:59,624 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:38:59,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:38:59,807 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-08-30 17:38:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:38:59,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 17:38:59,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:38:59,810 INFO L225 Difference]: With dead ends: 63 [2021-08-30 17:38:59,811 INFO L226 Difference]: Without dead ends: 63 [2021-08-30 17:38:59,811 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.11ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:38:59,815 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.82ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.38ms IncrementalHoareTripleChecker+Time [2021-08-30 17:38:59,817 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 221 Unknown, 0 Unchecked, 5.82ms Time], IncrementalHoareTripleChecker [9 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 140.38ms Time] [2021-08-30 17:38:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-08-30 17:38:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-08-30 17:38:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 47 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 17:38:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2021-08-30 17:38:59,831 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 11 [2021-08-30 17:38:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:38:59,832 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2021-08-30 17:38:59,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:38:59,832 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2021-08-30 17:38:59,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 17:38:59,833 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:38:59,833 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:38:59,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 17:38:59,833 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting barErr0REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:38:59,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:38:59,834 INFO L82 PathProgramCache]: Analyzing trace with hash 57103265, now seen corresponding path program 1 times [2021-08-30 17:38:59,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:38:59,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838895753] [2021-08-30 17:38:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:38:59,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:38:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:38:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:38:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:38:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:38:59,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:38:59,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838895753] [2021-08-30 17:38:59,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838895753] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:38:59,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:38:59,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:38:59,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855121346] [2021-08-30 17:38:59,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:38:59,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:38:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:38:59,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:38:59,887 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:39:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:39:00,018 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-08-30 17:39:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:39:00,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-08-30 17:39:00,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:39:00,023 INFO L225 Difference]: With dead ends: 55 [2021-08-30 17:39:00,023 INFO L226 Difference]: Without dead ends: 55 [2021-08-30 17:39:00,023 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.29ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:39:00,029 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 34 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.24ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.41ms IncrementalHoareTripleChecker+Time [2021-08-30 17:39:00,030 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 23 Invalid, 187 Unknown, 0 Unchecked, 3.24ms Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 93.41ms Time] [2021-08-30 17:39:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-30 17:39:00,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-08-30 17:39:00,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 45 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 17:39:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-08-30 17:39:00,043 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 14 [2021-08-30 17:39:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:39:00,043 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-08-30 17:39:00,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:39:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-08-30 17:39:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 17:39:00,045 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:39:00,045 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:39:00,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 17:39:00,045 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting barErr1REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:39:00,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:39:00,046 INFO L82 PathProgramCache]: Analyzing trace with hash 57103266, now seen corresponding path program 1 times [2021-08-30 17:39:00,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:39:00,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066766335] [2021-08-30 17:39:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:39:00,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:39:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:39:00,083 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:39:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:39:00,118 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 17:39:00,118 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:39:00,120 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location barErr1REQUIRES_VIOLATION (10 of 11 remaining) [2021-08-30 17:39:00,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location barErr0REQUIRES_VIOLATION (9 of 11 remaining) [2021-08-30 17:39:00,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0REQUIRES_VIOLATION (8 of 11 remaining) [2021-08-30 17:39:00,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr1REQUIRES_VIOLATION (7 of 11 remaining) [2021-08-30 17:39:00,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr2REQUIRES_VIOLATION (6 of 11 remaining) [2021-08-30 17:39:00,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr3REQUIRES_VIOLATION (5 of 11 remaining) [2021-08-30 17:39:00,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (4 of 11 remaining) [2021-08-30 17:39:00,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (3 of 11 remaining) [2021-08-30 17:39:00,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (2 of 11 remaining) [2021-08-30 17:39:00,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (1 of 11 remaining) [2021-08-30 17:39:00,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2021-08-30 17:39:00,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 17:39:00,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:39:00,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:39:00 BoogieIcfgContainer [2021-08-30 17:39:00,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:39:00,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:39:00,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:39:00,150 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:39:00,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:38:58" (3/4) ... [2021-08-30 17:39:00,154 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 17:39:00,192 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 17:39:00,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:39:00,193 INFO L158 Benchmark]: Toolchain (without parser) took 1927.96ms. Allocated memory was 50.3MB in the beginning and 83.9MB in the end (delta: 33.6MB). Free memory was 27.4MB in the beginning and 59.8MB in the end (delta: -32.3MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2021-08-30 17:39:00,193 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 50.3MB. Free memory is still 32.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:39:00,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.30ms. Allocated memory is still 50.3MB. Free memory was 27.3MB in the beginning and 29.6MB in the end (delta: -2.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-08-30 17:39:00,194 INFO L158 Benchmark]: Boogie Preprocessor took 36.33ms. Allocated memory is still 50.3MB. Free memory was 29.6MB in the beginning and 28.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:39:00,194 INFO L158 Benchmark]: RCFGBuilder took 204.50ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 28.0MB in the beginning and 44.2MB in the end (delta: -16.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-08-30 17:39:00,194 INFO L158 Benchmark]: TraceAbstraction took 1448.66ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 43.5MB in the beginning and 61.4MB in the end (delta: -17.9MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2021-08-30 17:39:00,195 INFO L158 Benchmark]: Witness Printer took 42.68ms. Allocated memory is still 83.9MB. Free memory was 61.4MB in the beginning and 59.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:39:00,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 50.3MB. Free memory is still 32.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.30ms. Allocated memory is still 50.3MB. Free memory was 27.3MB in the beginning and 29.6MB in the end (delta: -2.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.33ms. Allocated memory is still 50.3MB. Free memory was 29.6MB in the beginning and 28.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 204.50ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 28.0MB in the beginning and 44.2MB in the end (delta: -16.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1448.66ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 43.5MB in the beginning and 61.4MB in the end (delta: -17.9MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. * Witness Printer took 42.68ms. Allocated memory is still 83.9MB. Free memory was 61.4MB in the beginning and 59.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 VAL [b={3:0}, i=0] [L34] CALL foo(i, b, i) VAL [\old(n)=0, \old(size)=0, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=0, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=0] [L22] COND FALSE !(i < size) VAL [\old(n)=0, \old(size)=0, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=0] [L25] CALL bar(a, size + 1) VAL [\old(size)=1, b={2:0}] [L12] int res = 0, i; [L13] i = 0 VAL [\old(size)=1, b={2:0}, b={2:0}, i=0, res=0, size=1] [L13] COND TRUE i < size VAL [\old(size)=1, b={2:0}, b={2:0}, i=0, res=0, size=1] [L14] b[i] - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1387.71ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 12.08ms, AutomataDifference: 694.06ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.90ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 502.29ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 101 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 384.59ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 178 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 600 IncrementalHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 30 mSDtfsCounter, 600 mSolverCounterSat, 12.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 132.06ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=3, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 58.48ms AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.43ms SsaConstructionTime, 92.38ms SatisfiabilityAnalysisTime, 313.12ms InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2021-08-30 17:39:00,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...