/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/diff_usafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:00:27,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:00:27,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:00:27,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:00:27,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:00:27,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:00:27,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:00:27,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:00:27,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:00:27,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:00:27,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:00:27,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:00:27,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:00:27,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:00:27,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:00:27,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:00:27,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:00:27,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:00:27,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:00:27,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:00:27,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:00:27,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:00:27,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:00:27,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:00:27,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-07 05:00:27,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-07 05:00:27,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-07 05:00:27,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-07 05:00:27,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-07 05:00:27,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-07 05:00:27,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:00:27,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:00:27,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:00:27,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:00:27,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:00:27,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:00:27,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:00:27,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:00:27,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:00:27,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:00:27,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:00:27,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:00:27,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:00:27,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:00:27,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:00:27,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:00:27,512 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:00:27,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:00:27,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:00:27,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:00:27,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:00:27,517 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:00:27,517 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:00:27,517 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:00:27,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:00:27,518 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:00:27,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:00:27,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:00:27,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:00:27,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:00:27,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:00:27,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:00:27,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:00:27,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:00:27,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:00:27,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:00:27,521 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:00:27,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:00:27,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:00:27,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:00:27,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:00:27,943 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:00:27,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/diff_usafe.c [2021-01-07 05:00:28,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3b6d99b66/c750156d1b2f4c3086f8ded0f382e7bb/FLAGf08233576 [2021-01-07 05:00:28,645 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:00:28,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/diff_usafe.c [2021-01-07 05:00:28,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3b6d99b66/c750156d1b2f4c3086f8ded0f382e7bb/FLAGf08233576 [2021-01-07 05:00:29,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3b6d99b66/c750156d1b2f4c3086f8ded0f382e7bb [2021-01-07 05:00:29,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:00:29,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:00:29,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:29,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:00:29,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:00:29,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d3cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29, skipping insertion in model container [2021-01-07 05:00:29,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:00:29,072 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~found~0,] left hand side expression in assignment: lhs: VariableLHS[~found~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~D,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~D,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~k~0,]]]]] [2021-01-07 05:00:29,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:29,242 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~found~0,] left hand side expression in assignment: lhs: VariableLHS[~found~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~D,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~D,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~k~0,]]]]] [2021-01-07 05:00:29,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:29,278 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:00:29,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29 WrapperNode [2021-01-07 05:00:29,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:29,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:29,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:00:29,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:00:29,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:29,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:00:29,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:00:29,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:00:29,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... [2021-01-07 05:00:29,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:00:29,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:00:29,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:00:29,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:00:29,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:00:29,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:00:29,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:00:29,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:00:29,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:00:30,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:00:30,025 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-07 05:00:30,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:30 BoogieIcfgContainer [2021-01-07 05:00:30,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:00:30,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:00:30,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:00:30,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:00:30,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:00:29" (1/3) ... [2021-01-07 05:00:30,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65219b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:30, skipping insertion in model container [2021-01-07 05:00:30,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:29" (2/3) ... [2021-01-07 05:00:30,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65219b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:30, skipping insertion in model container [2021-01-07 05:00:30,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:30" (3/3) ... [2021-01-07 05:00:30,044 INFO L111 eAbstractionObserver]: Analyzing ICFG diff_usafe.c [2021-01-07 05:00:30,051 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:00:30,056 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2021-01-07 05:00:30,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-01-07 05:00:30,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:00:30,116 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:00:30,116 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:00:30,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:00:30,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:00:30,116 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:00:30,117 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:00:30,117 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:00:30,138 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-01-07 05:00:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 05:00:30,149 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:30,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 05:00:30,151 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:30,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:30,159 INFO L82 PathProgramCache]: Analyzing trace with hash 28739442, now seen corresponding path program 1 times [2021-01-07 05:00:30,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:30,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949483627] [2021-01-07 05:00:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:30,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949483627] [2021-01-07 05:00:30,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:30,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:30,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431723326] [2021-01-07 05:00:30,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-07 05:00:30,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-07 05:00:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:00:30,405 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2021-01-07 05:00:30,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:30,423 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-01-07 05:00:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-07 05:00:30,425 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-01-07 05:00:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:30,435 INFO L225 Difference]: With dead ends: 25 [2021-01-07 05:00:30,436 INFO L226 Difference]: Without dead ends: 23 [2021-01-07 05:00:30,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:00:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-07 05:00:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-07 05:00:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-07 05:00:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-01-07 05:00:30,499 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 5 [2021-01-07 05:00:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:30,500 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-01-07 05:00:30,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-07 05:00:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-01-07 05:00:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 05:00:30,501 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:30,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 05:00:30,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:00:30,502 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:30,506 INFO L82 PathProgramCache]: Analyzing trace with hash 28699080, now seen corresponding path program 1 times [2021-01-07 05:00:30,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:30,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527156988] [2021-01-07 05:00:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:30,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527156988] [2021-01-07 05:00:30,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:30,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:30,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426189941] [2021-01-07 05:00:30,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:30,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:30,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:30,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:30,617 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2021-01-07 05:00:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:30,659 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-01-07 05:00:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:30,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-01-07 05:00:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:30,662 INFO L225 Difference]: With dead ends: 22 [2021-01-07 05:00:30,662 INFO L226 Difference]: Without dead ends: 20 [2021-01-07 05:00:30,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-07 05:00:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-07 05:00:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-07 05:00:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-01-07 05:00:30,667 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 5 [2021-01-07 05:00:30,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:30,668 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-01-07 05:00:30,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:30,668 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-01-07 05:00:30,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 05:00:30,669 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:30,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 05:00:30,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:00:30,669 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:30,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:30,670 INFO L82 PathProgramCache]: Analyzing trace with hash 28699946, now seen corresponding path program 1 times [2021-01-07 05:00:30,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:30,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269519895] [2021-01-07 05:00:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:00:30,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:00:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:00:30,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:00:30,727 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-07 05:00:30,727 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-07 05:00:30,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:00:30,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:00:30 BoogieIcfgContainer [2021-01-07 05:00:30,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:00:30,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:00:30,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:00:30,755 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:00:30,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:30" (3/4) ... [2021-01-07 05:00:30,758 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-07 05:00:30,806 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/diff_usafe.c-witness.graphml [2021-01-07 05:00:30,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:00:30,809 INFO L168 Benchmark]: Toolchain (without parser) took 1775.29 ms. Allocated memory is still 155.2 MB. Free memory was 130.5 MB in the beginning and 107.6 MB in the end (delta: 23.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:30,810 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:00:30,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 121.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:30,811 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.81 ms. Allocated memory is still 155.2 MB. Free memory was 121.0 MB in the beginning and 119.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:30,812 INFO L168 Benchmark]: Boogie Preprocessor took 25.64 ms. Allocated memory is still 155.2 MB. Free memory was 119.5 MB in the beginning and 118.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:30,813 INFO L168 Benchmark]: RCFGBuilder took 680.34 ms. Allocated memory is still 155.2 MB. Free memory was 118.3 MB in the beginning and 134.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:30,814 INFO L168 Benchmark]: TraceAbstraction took 722.89 ms. Allocated memory is still 155.2 MB. Free memory was 134.8 MB in the beginning and 109.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:30,815 INFO L168 Benchmark]: Witness Printer took 51.94 ms. Allocated memory is still 155.2 MB. Free memory was 109.1 MB in the beginning and 107.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:30,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 121.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.81 ms. Allocated memory is still 155.2 MB. Free memory was 121.0 MB in the beginning and 119.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.64 ms. Allocated memory is still 155.2 MB. Free memory was 119.5 MB in the beginning and 118.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 680.34 ms. Allocated memory is still 155.2 MB. Free memory was 118.3 MB in the beginning and 134.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 722.89 ms. Allocated memory is still 155.2 MB. Free memory was 134.8 MB in the beginning and 109.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * Witness Printer took 51.94 ms. Allocated memory is still 155.2 MB. Free memory was 109.1 MB in the beginning and 107.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L30] int *A; [L31] int Alen = __VERIFIER_nondet_int(); [L32] int *B; [L33] int Blen = __VERIFIER_nondet_int(); [L34] int *D; [L5] int k = 0; [L6] int i = 0; [L7] int l1 = Alen; [L8] int l2 = Blen; [L9] int found; [L11] COND TRUE i < l1 [L12] int j = 0; [L13] found = 0 [L14] COND TRUE j < l2 && !found [L15] A[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 21 SDslu, 0 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...