./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-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 aeae4642ea0f346b37f312868ec7e7128e333d20 ........................................................................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-29 01:00:45,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:00:45,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:00:45,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:00:45,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:00:45,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:00:45,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:00:45,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:00:45,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:00:45,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:00:45,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:00:45,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:00:45,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:00:45,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:00:45,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:00:45,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:00:45,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:00:45,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:00:45,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:00:45,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:00:45,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:00:45,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:00:45,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:00:45,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:00:45,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:00:45,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:00:45,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:00:45,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:00:45,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:00:45,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:00:45,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:00:45,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:00:45,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:00:45,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:00:45,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:00:45,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:00:45,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:00:45,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:00:45,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:00:45,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:00:45,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:00:45,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-07-29 01:00:45,246 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:00:45,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:00:45,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:00:45,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:00:45,251 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:00:45,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:00:45,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 01:00:45,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:00:45,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:00:45,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 01:00:45,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:00:45,254 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-07-29 01:00:45,255 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-07-29 01:00:45,255 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-07-29 01:00:45,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:00:45,256 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-07-29 01:00:45,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 01:00:45,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:00:45,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:00:45,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:00:45,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:00:45,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:00:45,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:00:45,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:00:45,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:00:45,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:00:45,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:00:45,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:00:45,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> aeae4642ea0f346b37f312868ec7e7128e333d20 [2020-07-29 01:00:45,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:00:45,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:00:45,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:00:45,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:00:45,612 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:00:45,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2020-07-29 01:00:45,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b2f6578/d985865756254587b1b0c13d6f6ab7a9/FLAGd671df694 [2020-07-29 01:00:46,137 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:00:46,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2020-07-29 01:00:46,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b2f6578/d985865756254587b1b0c13d6f6ab7a9/FLAGd671df694 [2020-07-29 01:00:46,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b2f6578/d985865756254587b1b0c13d6f6ab7a9 [2020-07-29 01:00:46,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:00:46,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-07-29 01:00:46,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:00:46,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:00:46,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:00:46,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:00:46" (1/1) ... [2020-07-29 01:00:46,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b5a801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46, skipping insertion in model container [2020-07-29 01:00:46,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:00:46" (1/1) ... [2020-07-29 01:00:46,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:00:46,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:00:46,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:00:46,832 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:00:46,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:00:46,928 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:00:46,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46 WrapperNode [2020-07-29 01:00:46,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:00:46,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:00:46,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:00:46,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:00:46,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46" (1/1) ... [2020-07-29 01:00:46,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46" (1/1) ... [2020-07-29 01:00:46,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46" (1/1) ... [2020-07-29 01:00:46,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46" (1/1) ... [2020-07-29 01:00:46,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46" (1/1) ... [2020-07-29 01:00:46,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46" (1/1) ... [2020-07-29 01:00:46,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46" (1/1) ... [2020-07-29 01:00:46,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:00:46,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:00:46,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:00:46,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:00:46,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:00:47,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-29 01:00:47,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:00:47,029 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-29 01:00:47,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-29 01:00:47,029 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-29 01:00:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-29 01:00:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-29 01:00:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-29 01:00:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-29 01:00:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-29 01:00:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-29 01:00:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:00:47,446 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:00:47,446 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-29 01:00:47,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:00:47 BoogieIcfgContainer [2020-07-29 01:00:47,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:00:47,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:00:47,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:00:47,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:00:47,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:00:46" (1/3) ... [2020-07-29 01:00:47,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190be2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:00:47, skipping insertion in model container [2020-07-29 01:00:47,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:00:46" (2/3) ... [2020-07-29 01:00:47,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190be2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:00:47, skipping insertion in model container [2020-07-29 01:00:47,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:00:47" (3/3) ... [2020-07-29 01:00:47,460 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-read.c [2020-07-29 01:00:47,471 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:00:47,479 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-07-29 01:00:47,492 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-07-29 01:00:47,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:00:47,509 INFO L376 AbstractCegarLoop]: Hoare is false [2020-07-29 01:00:47,510 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:00:47,510 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:00:47,510 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:00:47,510 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:00:47,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:00:47,510 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:00:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-07-29 01:00:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-29 01:00:47,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:00:47,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:00:47,534 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-07-29 01:00:47,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:00:47,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1189570050, now seen corresponding path program 1 times [2020-07-29 01:00:47,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:00:47,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975430621] [2020-07-29 01:00:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:00:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:00:47,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-07-29 01:00:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:00:47,766 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {42#true} is VALID [2020-07-29 01:00:47,767 INFO L280 TraceCheckUtils]: 1: Hoare triple {42#true} assume true; {42#true} is VALID [2020-07-29 01:00:47,767 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {42#true} {42#true} #73#return; {42#true} is VALID [2020-07-29 01:00:47,772 INFO L263 TraceCheckUtils]: 0: Hoare triple {42#true} call ULTIMATE.init(); {48#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-29 01:00:47,772 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {42#true} is VALID [2020-07-29 01:00:47,772 INFO L280 TraceCheckUtils]: 2: Hoare triple {42#true} assume true; {42#true} is VALID [2020-07-29 01:00:47,773 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {42#true} {42#true} #73#return; {42#true} is VALID [2020-07-29 01:00:47,773 INFO L263 TraceCheckUtils]: 4: Hoare triple {42#true} call #t~ret5 := main(); {42#true} is VALID [2020-07-29 01:00:47,775 INFO L280 TraceCheckUtils]: 5: Hoare triple {42#true} havoc ~i~1;call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(400);~i~1 := 0; {47#(= 0 main_~i~1)} is VALID [2020-07-29 01:00:47,777 INFO L280 TraceCheckUtils]: 6: Hoare triple {47#(= 0 main_~i~1)} assume !(~i~1 < 100); {43#false} is VALID [2020-07-29 01:00:47,777 INFO L280 TraceCheckUtils]: 7: Hoare triple {43#false} ~i~1 := 0; {43#false} is VALID [2020-07-29 01:00:47,777 INFO L280 TraceCheckUtils]: 8: Hoare triple {43#false} assume !!(~i~1 < 100); {43#false} is VALID [2020-07-29 01:00:47,778 INFO L280 TraceCheckUtils]: 9: Hoare triple {43#false} assume !(1 == #valid[~#b~0.base]); {43#false} is VALID [2020-07-29 01:00:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:00:47,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975430621] [2020-07-29 01:00:47,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:00:47,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-29 01:00:47,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11741424] [2020-07-29 01:00:47,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-29 01:00:47,792 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:00:47,796 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:00:47,821 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:00:47,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-29 01:00:47,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:00:47,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 01:00:47,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 01:00:47,836 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-07-29 01:00:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:00:48,139 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-07-29 01:00:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-29 01:00:48,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-29 01:00:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:00:48,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:00:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-29 01:00:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:00:48,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-29 01:00:48,158 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 55 transitions. [2020-07-29 01:00:48,249 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:00:48,262 INFO L225 Difference]: With dead ends: 46 [2020-07-29 01:00:48,263 INFO L226 Difference]: Without dead ends: 43 [2020-07-29 01:00:48,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:00:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-29 01:00:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-07-29 01:00:48,302 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:00:48,303 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand 36 states. [2020-07-29 01:00:48,304 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 36 states. [2020-07-29 01:00:48,304 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 36 states. [2020-07-29 01:00:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:00:48,311 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-29 01:00:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-07-29 01:00:48,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:00:48,313 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:00:48,313 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand 43 states. [2020-07-29 01:00:48,314 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 43 states. [2020-07-29 01:00:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:00:48,319 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-29 01:00:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-07-29 01:00:48,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:00:48,321 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:00:48,321 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:00:48,322 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:00:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-29 01:00:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-07-29 01:00:48,327 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 10 [2020-07-29 01:00:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:00:48,327 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-07-29 01:00:48,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-29 01:00:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-07-29 01:00:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-29 01:00:48,329 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:00:48,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:00:48,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:00:48,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-07-29 01:00:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:00:48,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1775375512, now seen corresponding path program 1 times [2020-07-29 01:00:48,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:00:48,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377860395] [2020-07-29 01:00:48,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:00:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:00:48,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:00:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:00:48,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:00:48,394 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:00:48,395 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 01:00:48,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:00:48,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 01:00:48 BoogieIcfgContainer [2020-07-29 01:00:48,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 01:00:48,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:00:48,422 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:00:48,423 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:00:48,423 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:00:47" (3/4) ... [2020-07-29 01:00:48,426 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-29 01:00:48,474 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 01:00:48,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:00:48,478 INFO L168 Benchmark]: Toolchain (without parser) took 1924.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 961.6 MB in the beginning and 1.0 GB in the end (delta: -58.1 MB). Peak memory consumption was 88.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:00:48,479 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:00:48,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2020-07-29 01:00:48,481 INFO L168 Benchmark]: Boogie Preprocessor took 41.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:00:48,482 INFO L168 Benchmark]: RCFGBuilder took 478.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2020-07-29 01:00:48,483 INFO L168 Benchmark]: TraceAbstraction took 969.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.0 MB). Peak memory consumption was 79.0 MB. Max. memory is 11.5 GB. [2020-07-29 01:00:48,484 INFO L168 Benchmark]: Witness Printer took 53.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:00:48,487 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 371.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 478.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 969.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.0 MB). Peak memory consumption was 79.0 MB. Max. memory is 11.5 GB. * Witness Printer took 53.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: array index can be out of bounds array index can be out of bounds We found a FailurePath: [L21] int i, b[100]; [L22] i = 0 VAL [b={2:0}, i=0] [L22] COND TRUE i < 100 VAL [b={2:0}, i=0] [L23] CALL foo(i, b, i) VAL [\old(n)=0, \old(size)=0, b={2:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] [L14] COND TRUE i < size + 1 VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] [L15] a[i] VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 27 SDslu, 14 SDs, 0 SdLazy, 53 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...