./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d 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_1.3.100.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 0.1.25-9a8b2e8 [2020-10-20 05:59:50,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:59:50,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:59:50,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:59:50,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:59:50,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:59:50,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:59:50,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:59:50,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:59:50,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:59:50,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:59:50,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:59:50,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:59:50,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:59:50,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:59:50,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:59:50,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:59:50,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:59:50,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:59:50,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:59:50,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:59:50,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:59:50,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:59:50,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:59:50,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:59:50,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:59:50,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:59:50,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:59:50,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:59:50,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:59:50,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:59:50,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:59:50,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:59:50,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:59:50,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:59:50,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:59:50,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:59:50,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:59:50,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:59:50,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:59:50,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:59:50,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:59:50,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:59:50,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:59:50,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:59:50,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:59:50,268 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:59:50,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:59:50,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:59:50,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:59:50,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:59:50,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:59:50,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:59:50,270 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:59:50,270 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:59:50,270 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:59:50,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:59:50,271 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:59:50,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:59:50,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:59:50,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:59:50,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:59:50,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:59:50,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:59:50,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:59:50,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:59:50,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:59:50,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:59:50,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:59:50,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:59:50,274 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 [2020-10-20 05:59:50,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:59:50,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:59:50,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:59:50,498 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:59:50,498 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:59:50,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2020-10-20 05:59:50,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1915376d2/53e6445ffcbc4b58902c0c421f2748f6/FLAGbb2e86b04 [2020-10-20 05:59:51,072 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:59:51,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2020-10-20 05:59:51,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1915376d2/53e6445ffcbc4b58902c0c421f2748f6/FLAGbb2e86b04 [2020-10-20 05:59:51,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1915376d2/53e6445ffcbc4b58902c0c421f2748f6 [2020-10-20 05:59:51,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:59:51,480 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:59:51,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:51,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:59:51,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:59:51,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:51" (1/1) ... [2020-10-20 05:59:51,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc49c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51, skipping insertion in model container [2020-10-20 05:59:51,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:51" (1/1) ... [2020-10-20 05:59:51,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:59:51,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:59:51,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:51,822 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:59:51,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:51,857 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:59:51,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51 WrapperNode [2020-10-20 05:59:51,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:51,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:59:51,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:59:51,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:59:51,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51" (1/1) ... [2020-10-20 05:59:51,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51" (1/1) ... [2020-10-20 05:59:51,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51" (1/1) ... [2020-10-20 05:59:51,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51" (1/1) ... [2020-10-20 05:59:51,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51" (1/1) ... [2020-10-20 05:59:51,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51" (1/1) ... [2020-10-20 05:59:51,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51" (1/1) ... [2020-10-20 05:59:51,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:59:51,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:59:51,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:59:51,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:59:51,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51" (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 [2020-10-20 05:59:51,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:59:51,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:59:51,958 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-20 05:59:51,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:59:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-20 05:59:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:59:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:59:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:59:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:59:51,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:59:51,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:59:51,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:59:52,229 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:59:52,229 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-20 05:59:52,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:52 BoogieIcfgContainer [2020-10-20 05:59:52,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:59:52,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:59:52,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:59:52,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:59:52,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:59:51" (1/3) ... [2020-10-20 05:59:52,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd9e7ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:52, skipping insertion in model container [2020-10-20 05:59:52,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:51" (2/3) ... [2020-10-20 05:59:52,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd9e7ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:52, skipping insertion in model container [2020-10-20 05:59:52,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:52" (3/3) ... [2020-10-20 05:59:52,240 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-read.c [2020-10-20 05:59:52,254 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:59:52,263 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-20 05:59:52,279 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-20 05:59:52,328 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:59:52,329 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:59:52,329 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:59:52,329 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:59:52,329 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:59:52,329 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:59:52,330 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:59:52,330 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:59:52,353 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-20 05:59:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:59:52,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:52,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:52,368 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:52,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1189570050, now seen corresponding path program 1 times [2020-10-20 05:59:52,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:52,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366071181] [2020-10-20 05:59:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:52,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366071181] [2020-10-20 05:59:52,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:52,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:59:52,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698137958] [2020-10-20 05:59:52,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:52,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:52,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:52,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:52,623 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-10-20 05:59:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:52,804 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-10-20 05:59:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:59:52,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:59:52,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:52,817 INFO L225 Difference]: With dead ends: 46 [2020-10-20 05:59:52,818 INFO L226 Difference]: Without dead ends: 43 [2020-10-20 05:59:52,820 INFO L677 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 [2020-10-20 05:59:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-20 05:59:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-20 05:59:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:59:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-20 05:59:52,864 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 10 [2020-10-20 05:59:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:52,865 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-20 05:59:52,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-20 05:59:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:59:52,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:52,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:52,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:59:52,868 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:52,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:52,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1775375512, now seen corresponding path program 1 times [2020-10-20 05:59:52,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:52,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14587484] [2020-10-20 05:59:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:59:52,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:59:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:59:52,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:59:52,929 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 05:59:52,930 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:59:52,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:59:52,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:59:52 BoogieIcfgContainer [2020-10-20 05:59:52,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:59:52,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:59:52,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:59:52,953 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:59:52,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:52" (3/4) ... [2020-10-20 05:59:52,955 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 05:59:52,996 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:59:52,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:59:52,998 INFO L168 Benchmark]: Toolchain (without parser) took 1523.38 ms. Allocated memory was 34.1 MB in the beginning and 45.6 MB in the end (delta: 11.5 MB). Free memory was 10.6 MB in the beginning and 11.6 MB in the end (delta: -1.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:52,999 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 33.0 MB. Free memory was 17.4 MB in the beginning and 17.3 MB in the end (delta: 57.7 kB). Peak memory consumption was 57.7 kB. Max. memory is 14.3 GB. [2020-10-20 05:59:53,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.61 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 9.7 MB in the beginning and 26.2 MB in the end (delta: -16.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:53,001 INFO L168 Benchmark]: Boogie Preprocessor took 38.01 ms. Allocated memory is still 43.5 MB. Free memory was 26.2 MB in the beginning and 24.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:53,002 INFO L168 Benchmark]: RCFGBuilder took 334.12 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 24.4 MB in the beginning and 18.3 MB in the end (delta: 6.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:53,003 INFO L168 Benchmark]: TraceAbstraction took 719.66 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 17.9 MB in the beginning and 13.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:53,004 INFO L168 Benchmark]: Witness Printer took 43.51 ms. Allocated memory is still 45.6 MB. Free memory was 13.6 MB in the beginning and 11.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:53,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 33.0 MB. Free memory was 17.4 MB in the beginning and 17.3 MB in the end (delta: 57.7 kB). Peak memory consumption was 57.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 377.61 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 9.7 MB in the beginning and 26.2 MB in the end (delta: -16.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.01 ms. Allocated memory is still 43.5 MB. Free memory was 26.2 MB in the beginning and 24.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 334.12 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 24.4 MB in the beginning and 18.3 MB in the end (delta: 6.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 719.66 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 17.9 MB in the beginning and 13.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 14.3 GB. * Witness Printer took 43.51 ms. Allocated memory is still 45.6 MB. Free memory was 13.6 MB in the beginning and 11.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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, 0.1s 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, 0.0s 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...