./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 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/ArraysOfVariableLength_-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 0dfe0f165ef563fbd088ad0368faf44ddd32870a ..................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-26 03:36:41,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:36:41,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:36:41,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:36:41,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:36:41,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:36:41,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:36:41,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:36:41,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:36:41,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:36:41,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:36:41,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:36:41,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:36:41,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:36:41,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:36:41,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:36:41,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:36:41,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:36:41,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:36:41,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:36:41,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:36:41,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:36:41,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:36:41,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:36:41,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:36:41,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:36:41,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:36:41,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:36:41,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:36:41,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:36:41,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:36:41,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:36:41,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:36:41,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:36:41,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:36:41,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:36:41,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:36:41,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:36:41,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:36:41,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:36:41,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:36:41,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:36:41,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:36:41,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:36:41,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:36:41,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:36:41,346 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:36:41,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:36:41,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:36:41,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:36:41,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:36:41,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:36:41,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:36:41,350 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:36:41,350 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:36:41,350 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:36:41,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:36:41,350 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:36:41,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:36:41,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:36:41,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:36:41,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:36:41,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:36:41,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:36:41,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:36:41,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:36:41,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:36:41,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:36:41,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:36:41,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:36:41,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dfe0f165ef563fbd088ad0368faf44ddd32870a [2020-10-26 03:36:41,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:36:41,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:36:41,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:36:41,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:36:41,852 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:36:41,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2020-10-26 03:36:41,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69c8ed3f/19286ba20cac4d2b9502b41b0beb9bff/FLAG4243b9637 [2020-10-26 03:36:42,582 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:36:42,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2020-10-26 03:36:42,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69c8ed3f/19286ba20cac4d2b9502b41b0beb9bff/FLAG4243b9637 [2020-10-26 03:36:42,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69c8ed3f/19286ba20cac4d2b9502b41b0beb9bff [2020-10-26 03:36:42,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:36:42,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:36:42,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:36:42,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:36:42,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:36:42,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:36:42" (1/1) ... [2020-10-26 03:36:42,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32985aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:42, skipping insertion in model container [2020-10-26 03:36:42,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:36:42" (1/1) ... [2020-10-26 03:36:42,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:36:42,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:36:43,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:36:43,233 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:36:43,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:36:43,273 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:36:43,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43 WrapperNode [2020-10-26 03:36:43,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:36:43,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:36:43,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:36:43,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:36:43,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43" (1/1) ... [2020-10-26 03:36:43,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43" (1/1) ... [2020-10-26 03:36:43,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43" (1/1) ... [2020-10-26 03:36:43,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43" (1/1) ... [2020-10-26 03:36:43,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43" (1/1) ... [2020-10-26 03:36:43,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43" (1/1) ... [2020-10-26 03:36:43,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43" (1/1) ... [2020-10-26 03:36:43,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:36:43,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:36:43,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:36:43,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:36:43,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43" (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 [2020-10-26 03:36:43,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:36:43,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:36:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-26 03:36:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:36:43,413 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-26 03:36:43,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:36:43,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:36:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:36:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:36:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:36:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:36:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:36:43,861 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:36:43,862 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 03:36:43,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:36:43 BoogieIcfgContainer [2020-10-26 03:36:43,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:36:43,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:36:43,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:36:43,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:36:43,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:36:42" (1/3) ... [2020-10-26 03:36:43,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a99f0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:36:43, skipping insertion in model container [2020-10-26 03:36:43,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:43" (2/3) ... [2020-10-26 03:36:43,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a99f0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:36:43, skipping insertion in model container [2020-10-26 03:36:43,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:36:43" (3/3) ... [2020-10-26 03:36:43,880 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-write.c [2020-10-26 03:36:43,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:36:43,901 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-26 03:36:43,913 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-26 03:36:43,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:36:43,936 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:36:43,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:36:43,937 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:36:43,937 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:36:43,937 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:36:43,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:36:43,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:36:43,952 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-26 03:36:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:36:43,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:43,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:43,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:43,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2020-10-26 03:36:43,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:43,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350295120] [2020-10-26 03:36:43,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:44,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350295120] [2020-10-26 03:36:44,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:36:44,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:36:44,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977109374] [2020-10-26 03:36:44,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:36:44,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:44,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:36:44,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:36:44,249 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-10-26 03:36:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:44,536 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-26 03:36:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:36:44,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 03:36:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:44,548 INFO L225 Difference]: With dead ends: 58 [2020-10-26 03:36:44,548 INFO L226 Difference]: Without dead ends: 54 [2020-10-26 03:36:44,550 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 [2020-10-26 03:36:44,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-26 03:36:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-26 03:36:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-26 03:36:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-26 03:36:44,593 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2020-10-26 03:36:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:44,594 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-26 03:36:44,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:36:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-26 03:36:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:36:44,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:44,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:44,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:36:44,595 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2020-10-26 03:36:44,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:44,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949535315] [2020-10-26 03:36:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:36:44,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:36:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:36:44,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:36:44,663 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:36:44,664 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:36:44,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:36:44,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:36:44 BoogieIcfgContainer [2020-10-26 03:36:44,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:36:44,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:36:44,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:36:44,701 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:36:44,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:36:43" (3/4) ... [2020-10-26 03:36:44,704 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 03:36:44,765 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:36:44,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:36:44,773 INFO L168 Benchmark]: Toolchain (without parser) took 1823.74 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.7 MB in the beginning and 26.7 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:44,775 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 44.0 MB. Free memory was 29.3 MB in the beginning and 29.3 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:36:44,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.03 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 23.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:44,778 INFO L168 Benchmark]: Boogie Preprocessor took 43.91 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 21.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:44,779 INFO L168 Benchmark]: RCFGBuilder took 546.45 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.8 MB in the beginning and 37.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:44,782 INFO L168 Benchmark]: TraceAbstraction took 827.96 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 28.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:44,783 INFO L168 Benchmark]: Witness Printer took 65.55 ms. Allocated memory is still 54.5 MB. Free memory was 28.3 MB in the beginning and 26.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:44,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 44.0 MB. Free memory was 29.3 MB in the beginning and 29.3 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.03 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 23.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.91 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 21.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 546.45 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.8 MB in the beginning and 37.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 827.96 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 28.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Witness Printer took 65.55 ms. Allocated memory is still 54.5 MB. Free memory was 28.3 MB in the beginning and 26.7 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: - 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 + 1) VAL [\old(n)=0, \old(size)=1, b={2:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L14] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L15] a[i] VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 27 SDslu, 19 SDs, 0 SdLazy, 64 SolverSat, 7 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=40occurred 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, 15 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...