./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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_-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 a6853fb9e064ccfef5e54a8bac94eb86beeed80f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-dev-20ed64e [2021-08-27 06:01:38,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:01:38,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:01:38,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:01:38,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:01:38,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:01:38,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:01:38,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:01:38,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:01:38,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:01:38,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:01:38,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:01:38,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:01:38,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:01:38,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:01:38,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:01:38,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:01:38,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:01:38,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:01:38,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:01:38,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:01:38,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:01:38,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:01:38,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:01:38,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:01:38,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:01:38,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:01:38,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:01:38,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:01:38,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:01:38,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:01:38,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:01:38,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:01:38,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:01:38,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:01:38,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:01:38,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:01:38,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:01:38,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:01:38,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:01:38,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:01:38,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:01:38,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:01:38,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:01:38,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:01:38,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:01:38,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:01:38,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:01:38,797 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:01:38,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:01:38,798 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:01:38,798 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:01:38,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:01:38,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:01:38,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:01:38,799 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:01:38,799 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:01:38,799 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:01:38,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:01:38,800 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:01:38,800 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:01:38,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:01:38,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:01:38,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:01:38,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:01:38,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:01:38,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:01:38,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:01:38,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:01:38,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:01:38,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:01:38,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2021-08-27 06:01:39,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:01:39,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:01:39,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:01:39,113 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:01:39,114 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:01:39,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2021-08-27 06:01:39,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca1e5117b/a3e3d875553f427b81c7498019b3cfef/FLAGa9a05cd94 [2021-08-27 06:01:39,461 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:01:39,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2021-08-27 06:01:39,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca1e5117b/a3e3d875553f427b81c7498019b3cfef/FLAGa9a05cd94 [2021-08-27 06:01:39,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca1e5117b/a3e3d875553f427b81c7498019b3cfef [2021-08-27 06:01:39,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:01:39,901 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:01:39,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:01:39,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:01:39,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:01:39,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:01:39" (1/1) ... [2021-08-27 06:01:39,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9e4005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:39, skipping insertion in model container [2021-08-27 06:01:39,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:01:39" (1/1) ... [2021-08-27 06:01:39,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:01:39,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:01:40,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:01:40,022 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:01:40,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:01:40,058 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:01:40,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40 WrapperNode [2021-08-27 06:01:40,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:01:40,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:01:40,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:01:40,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:01:40,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40" (1/1) ... [2021-08-27 06:01:40,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40" (1/1) ... [2021-08-27 06:01:40,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40" (1/1) ... [2021-08-27 06:01:40,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40" (1/1) ... [2021-08-27 06:01:40,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40" (1/1) ... [2021-08-27 06:01:40,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40" (1/1) ... [2021-08-27 06:01:40,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40" (1/1) ... [2021-08-27 06:01:40,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:01:40,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:01:40,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:01:40,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:01:40,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40" (1/1) ... [2021-08-27 06:01:40,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:01:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:01:40,153 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) [2021-08-27 06:01:40,173 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 [2021-08-27 06:01:40,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:01:40,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:01:40,185 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-08-27 06:01:40,185 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-27 06:01:40,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:01:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-08-27 06:01:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 06:01:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-27 06:01:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:01:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 06:01:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:01:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:01:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:01:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:01:40,504 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:01:40,505 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 06:01:40,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:01:40 BoogieIcfgContainer [2021-08-27 06:01:40,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:01:40,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:01:40,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:01:40,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:01:40,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:01:39" (1/3) ... [2021-08-27 06:01:40,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589c787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:01:40, skipping insertion in model container [2021-08-27 06:01:40,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:40" (2/3) ... [2021-08-27 06:01:40,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589c787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:01:40, skipping insertion in model container [2021-08-27 06:01:40,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:01:40" (3/3) ... [2021-08-27 06:01:40,511 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2021-08-27 06:01:40,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:01:40,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-27 06:01:40,539 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:01:40,543 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 [2021-08-27 06:01:40,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-27 06:01:40,552 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) [2021-08-27 06:01:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:01:40,556 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:40,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:40,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 06:01:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:40,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2021-08-27 06:01:40,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:40,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435589055] [2021-08-27 06:01:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:40,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:40,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:40,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:40,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435589055] [2021-08-27 06:01:40,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435589055] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:40,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:40,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:40,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472882535] [2021-08-27 06:01:40,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:01:40,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:40,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:01:40,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:01:40,679 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) [2021-08-27 06:01:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:40,777 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2021-08-27 06:01:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:01:40,778 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 [2021-08-27 06:01:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:40,783 INFO L225 Difference]: With dead ends: 52 [2021-08-27 06:01:40,783 INFO L226 Difference]: Without dead ends: 49 [2021-08-27 06:01:40,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:01:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-27 06:01:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-27 06:01:40,812 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) [2021-08-27 06:01:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-08-27 06:01:40,814 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2021-08-27 06:01:40,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:40,814 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-08-27 06:01:40,815 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) [2021-08-27 06:01:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-08-27 06:01:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:01:40,815 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:40,815 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:40,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 06:01:40,817 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 06:01:40,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2021-08-27 06:01:40,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:40,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874250692] [2021-08-27 06:01:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:40,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:40,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:40,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:40,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874250692] [2021-08-27 06:01:40,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874250692] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:40,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:40,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 06:01:40,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906356219] [2021-08-27 06:01:40,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:40,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:40,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:40,892 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) [2021-08-27 06:01:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:41,014 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-08-27 06:01:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:41,015 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 [2021-08-27 06:01:41,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:41,016 INFO L225 Difference]: With dead ends: 56 [2021-08-27 06:01:41,016 INFO L226 Difference]: Without dead ends: 56 [2021-08-27 06:01:41,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-27 06:01:41,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2021-08-27 06:01:41,027 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) [2021-08-27 06:01:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-08-27 06:01:41,030 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2021-08-27 06:01:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:41,030 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-08-27 06:01:41,030 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) [2021-08-27 06:01:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-08-27 06:01:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:01:41,032 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:41,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:41,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 06:01:41,032 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 06:01:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:41,033 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2021-08-27 06:01:41,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:41,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682390154] [2021-08-27 06:01:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:41,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:41,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:41,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:41,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682390154] [2021-08-27 06:01:41,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682390154] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:41,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:41,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 06:01:41,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871569222] [2021-08-27 06:01:41,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:01:41,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:01:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:01:41,174 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 6 states, 5 states have (on average 1.4) 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) [2021-08-27 06:01:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:41,360 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-08-27 06:01:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:01:41,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) 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 [2021-08-27 06:01:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:41,361 INFO L225 Difference]: With dead ends: 47 [2021-08-27 06:01:41,361 INFO L226 Difference]: Without dead ends: 47 [2021-08-27 06:01:41,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:01:41,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-27 06:01:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-08-27 06:01:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 39 states have internal predecessors, (44), 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) [2021-08-27 06:01:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-08-27 06:01:41,364 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2021-08-27 06:01:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:41,372 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-08-27 06:01:41,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) 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) [2021-08-27 06:01:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-08-27 06:01:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:01:41,373 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:41,373 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:41,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 06:01:41,374 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fooErr1REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 06:01:41,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:41,374 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2021-08-27 06:01:41,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:41,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129158950] [2021-08-27 06:01:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:41,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:41,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:41,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:41,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129158950] [2021-08-27 06:01:41,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129158950] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:41,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:41,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 06:01:41,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062383120] [2021-08-27 06:01:41,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:01:41,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:41,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:01:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:01:41,508 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 6 states, 5 states have (on average 1.4) 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) [2021-08-27 06:01:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:41,660 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2021-08-27 06:01:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:01:41,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) 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 [2021-08-27 06:01:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:41,663 INFO L225 Difference]: With dead ends: 72 [2021-08-27 06:01:41,663 INFO L226 Difference]: Without dead ends: 72 [2021-08-27 06:01:41,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:01:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-27 06:01:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2021-08-27 06:01:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-27 06:01:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-08-27 06:01:41,668 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2021-08-27 06:01:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:41,669 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-08-27 06:01:41,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) 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) [2021-08-27 06:01:41,669 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-08-27 06:01:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 06:01:41,669 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:41,669 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:41,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 06:01:41,670 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting fooErr2REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 06:01:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:41,670 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2021-08-27 06:01:41,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:41,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158769961] [2021-08-27 06:01:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:41,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:41,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:41,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:41,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158769961] [2021-08-27 06:01:41,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158769961] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:41,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:41,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:41,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140696271] [2021-08-27 06:01:41,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:41,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:41,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:41,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:41,708 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:01:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:41,776 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2021-08-27 06:01:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:41,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 2 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 12 [2021-08-27 06:01:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:41,777 INFO L225 Difference]: With dead ends: 55 [2021-08-27 06:01:41,777 INFO L226 Difference]: Without dead ends: 55 [2021-08-27 06:01:41,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-27 06:01:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-08-27 06:01:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 45 states have internal predecessors, (51), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-27 06:01:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-08-27 06:01:41,781 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2021-08-27 06:01:41,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:41,781 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-08-27 06:01:41,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:01:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-08-27 06:01:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 06:01:41,782 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:41,782 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:41,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 06:01:41,782 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting fooErr3REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 06:01:41,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:41,782 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2021-08-27 06:01:41,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:41,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509655462] [2021-08-27 06:01:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:41,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:01:41,799 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:01:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:01:41,818 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 06:01:41,819 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:01:41,819 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location fooErr3REQUIRES_VIOLATION [2021-08-27 06:01:41,821 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location barErr0REQUIRES_VIOLATION [2021-08-27 06:01:41,821 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location barErr1REQUIRES_VIOLATION [2021-08-27 06:01:41,821 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0REQUIRES_VIOLATION [2021-08-27 06:01:41,821 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr1REQUIRES_VIOLATION [2021-08-27 06:01:41,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr2REQUIRES_VIOLATION [2021-08-27 06:01:41,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 06:01:41,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 06:01:41,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 06:01:41,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 06:01:41,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:01:41,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 06:01:41,827 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:01:41,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:01:41 BoogieIcfgContainer [2021-08-27 06:01:41,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:01:41,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:01:41,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:01:41,855 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:01:41,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:01:40" (3/4) ... [2021-08-27 06:01:41,857 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 06:01:41,896 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 06:01:41,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:01:41,898 INFO L168 Benchmark]: Toolchain (without parser) took 1997.69 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 41.8 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:41,898 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:01:41,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.30 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 39.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:41,899 INFO L168 Benchmark]: Boogie Preprocessor took 66.07 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.8 MB in the end (delta: -438.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:41,899 INFO L168 Benchmark]: RCFGBuilder took 377.78 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 34.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:41,899 INFO L168 Benchmark]: TraceAbstraction took 1347.23 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.9 MB in the beginning and 43.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:41,900 INFO L168 Benchmark]: Witness Printer took 41.85 ms. Allocated memory is still 69.2 MB. Free memory was 43.4 MB in the beginning and 41.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:41,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 156.30 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 39.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.07 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.8 MB in the end (delta: -438.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 377.78 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 34.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1347.23 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.9 MB in the beginning and 43.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 41.85 ms. Allocated memory is still 69.2 MB. Free memory was 43.4 MB in the beginning and 41.8 MB in the end (delta: 1.6 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 - CounterExampleResult [Line: 23]: 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 + 1) VAL [\old(n)=0, \old(size)=1, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, b[i]=402, i=0, n=0, size=1] [L23] a[i] = 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: 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: 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: 1287.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 9.3ms, AutomataDifference: 654.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 200 SDtfs, 125 SDslu, 165 SDs, 0 SdLazy, 439 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 387.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 148.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 39.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.3ms SsaConstructionTime, 100.1ms SatisfiabilityAnalysisTime, 328.3ms InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 189 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2021-08-27 06:01:41,926 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...