/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/mult_array_unsafe.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:49:16,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:49:16,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:49:16,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:49:16,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:49:16,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:49:16,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:49:16,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:49:16,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:49:16,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:49:16,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:49:16,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:49:16,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:49:16,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:49:16,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:49:16,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:49:16,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:49:16,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:49:16,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:49:16,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:49:16,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:49:16,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:49:16,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:49:16,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:49:16,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:49:16,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:49:16,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:49:16,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:49:16,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:49:16,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:49:16,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:49:16,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:49:16,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:49:16,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:49:16,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:49:16,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:49:16,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:49:16,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:49:16,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:49:16,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:49:16,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:49:16,439 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:49:16,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:49:16,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:49:16,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:49:16,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:49:16,440 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:49:16,441 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:49:16,441 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:49:16,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:49:16,442 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:49:16,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:49:16,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:49:16,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:49:16,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:49:16,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:49:16,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:49:16,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:49:16,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:49:16,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:49:16,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:49:16,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:49:16,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:49:16,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:49:16,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:49:16,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:49:16,866 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:49:16,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-12-23 16:49:16,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e676008c1/b0f209bdf7a74b4db3672d9ba94643b1/FLAG4d8351a66 [2020-12-23 16:49:17,652 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:49:17,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-12-23 16:49:17,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e676008c1/b0f209bdf7a74b4db3672d9ba94643b1/FLAG4d8351a66 [2020-12-23 16:49:17,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e676008c1/b0f209bdf7a74b4db3672d9ba94643b1 [2020-12-23 16:49:17,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:49:17,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:49:17,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:49:17,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:49:17,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:49:17,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:49:17" (1/1) ... [2020-12-23 16:49:17,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db441fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:17, skipping insertion in model container [2020-12-23 16:49:17,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:49:17" (1/1) ... [2020-12-23 16:49:17,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:49:18,055 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: lhs: VariableLHS[~fac~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~arr~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~arr~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~arr2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~arr2~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~j~0,]]]]] [2020-12-23 16:49:18,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:49:18,369 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: lhs: VariableLHS[~fac~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~arr~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~arr~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~arr2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~arr2~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~j~0,]]]]] [2020-12-23 16:49:18,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:49:18,485 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:49:18,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18 WrapperNode [2020-12-23 16:49:18,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:49:18,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:49:18,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:49:18,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:49:18,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (1/1) ... [2020-12-23 16:49:18,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (1/1) ... [2020-12-23 16:49:18,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:49:18,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:49:18,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:49:18,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:49:18,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (1/1) ... [2020-12-23 16:49:18,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (1/1) ... [2020-12-23 16:49:18,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (1/1) ... [2020-12-23 16:49:18,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (1/1) ... [2020-12-23 16:49:18,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (1/1) ... [2020-12-23 16:49:18,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (1/1) ... [2020-12-23 16:49:18,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (1/1) ... [2020-12-23 16:49:18,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:49:18,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:49:18,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:49:18,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:49:18,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (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 [2020-12-23 16:49:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:49:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:49:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:49:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:49:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:49:18,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:49:19,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:49:19,268 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-23 16:49:19,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:49:19 BoogieIcfgContainer [2020-12-23 16:49:19,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:49:19,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:49:19,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:49:19,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:49:19,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:49:17" (1/3) ... [2020-12-23 16:49:19,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c81f508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:49:19, skipping insertion in model container [2020-12-23 16:49:19,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:18" (2/3) ... [2020-12-23 16:49:19,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c81f508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:49:19, skipping insertion in model container [2020-12-23 16:49:19,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:49:19" (3/3) ... [2020-12-23 16:49:19,283 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2020-12-23 16:49:19,293 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:49:19,299 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 16:49:19,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 16:49:19,360 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:49:19,360 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:49:19,360 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:49:19,360 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:49:19,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:49:19,361 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:49:19,361 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:49:19,361 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:49:19,378 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-23 16:49:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:49:19,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:19,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:19,388 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:19,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:19,395 INFO L82 PathProgramCache]: Analyzing trace with hash 119383862, now seen corresponding path program 1 times [2020-12-23 16:49:19,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:19,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990736674] [2020-12-23 16:49:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:19,527 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:49:19,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414913927] [2020-12-23 16:49:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:19,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:49:19,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:19,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990736674] [2020-12-23 16:49:19,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:49:19,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414913927] [2020-12-23 16:49:19,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:19,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:19,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227847547] [2020-12-23 16:49:19,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:19,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:19,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:19,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:19,751 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-12-23 16:49:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:19,822 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-12-23 16:49:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:19,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 16:49:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:19,833 INFO L225 Difference]: With dead ends: 28 [2020-12-23 16:49:19,834 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 16:49:19,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:49:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 16:49:19,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-23 16:49:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 16:49:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-23 16:49:19,886 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 8 [2020-12-23 16:49:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:19,887 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-23 16:49:19,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-23 16:49:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:49:19,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:19,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:20,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-23 16:49:20,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:20,105 INFO L82 PathProgramCache]: Analyzing trace with hash -594066643, now seen corresponding path program 1 times [2020-12-23 16:49:20,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:20,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398867847] [2020-12-23 16:49:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:20,123 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:49:20,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048335624] [2020-12-23 16:49:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 16:49:20,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 16:49:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 16:49:20,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 16:49:20,286 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 16:49:20,287 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 16:49:20,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:20,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 04:49:20 BoogieIcfgContainer [2020-12-23 16:49:20,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 16:49:20,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 16:49:20,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 16:49:20,528 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 16:49:20,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:49:19" (3/4) ... [2020-12-23 16:49:20,531 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 16:49:20,573 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/mult_array_unsafe.i-witness.graphml [2020-12-23 16:49:20,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 16:49:20,575 INFO L168 Benchmark]: Toolchain (without parser) took 2599.26 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 74.6 MB in the end (delta: 50.1 MB). Peak memory consumption was 49.7 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:20,576 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:49:20,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.67 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 104.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:20,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.88 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 102.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:20,578 INFO L168 Benchmark]: Boogie Preprocessor took 32.78 ms. Allocated memory is still 151.0 MB. Free memory was 102.5 MB in the beginning and 101.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:20,579 INFO L168 Benchmark]: RCFGBuilder took 667.62 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 119.7 MB in the end (delta: -18.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:20,580 INFO L168 Benchmark]: TraceAbstraction took 1254.93 ms. Allocated memory is still 151.0 MB. Free memory was 119.2 MB in the beginning and 76.2 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:20,581 INFO L168 Benchmark]: Witness Printer took 45.81 ms. Allocated memory is still 151.0 MB. Free memory was 76.2 MB in the beginning and 74.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:20,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 507.67 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 104.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.88 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 102.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.78 ms. Allocated memory is still 151.0 MB. Free memory was 102.5 MB in the beginning and 101.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 667.62 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 119.7 MB in the end (delta: -18.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1254.93 ms. Allocated memory is still 151.0 MB. Free memory was 119.2 MB in the beginning and 76.2 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * Witness Printer took 45.81 ms. Allocated memory is still 151.0 MB. Free memory was 76.2 MB in the beginning and 74.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L515] length = 1 [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); [L520] COND FALSE !(!arr || !arr2) [L521] i=0 [L521] COND TRUE i