/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/memsafety-ext3/scopes4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:36:22,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:36:22,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:36:22,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:36:22,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:36:22,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:36:22,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:36:22,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:36:22,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:36:22,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:36:22,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:36:22,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:36:22,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:36:22,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:36:22,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:36:22,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:36:22,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:36:22,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:36:22,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:36:22,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:36:22,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:36:22,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:36:22,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:36:22,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:36:23,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:36:23,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:36:23,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:36:23,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:36:23,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:36:23,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:36:23,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:36:23,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:36:23,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:36:23,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:36:23,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:36:23,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:36:23,026 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 17:36:23,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:36:23,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:36:23,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:36:23,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:36:23,083 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:36:23,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:36:23,083 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:36:23,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:36:23,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:36:23,084 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:36:23,085 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:36:23,085 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:36:23,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:36:23,086 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:36:23,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:36:23,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:36:23,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:36:23,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:36:23,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:36:23,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:36:23,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:36:23,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:36:23,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:36:23,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:36:23,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:36:23,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:36:23,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:36:23,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:36:23,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:36:23,581 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:36:23,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes4-2.c [2020-12-23 17:36:23,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/20ca86e7a/f2dce13599c247188ae9269ddbcaae64/FLAG38db76a23 [2020-12-23 17:36:24,358 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:36:24,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes4-2.c [2020-12-23 17:36:24,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/20ca86e7a/f2dce13599c247188ae9269ddbcaae64/FLAG38db76a23 [2020-12-23 17:36:24,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/20ca86e7a/f2dce13599c247188ae9269ddbcaae64 [2020-12-23 17:36:24,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:36:24,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:36:24,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:36:24,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:36:24,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:36:24,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9352e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24, skipping insertion in model container [2020-12-23 17:36:24,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:36:24,748 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~arr~0,],[IntegerLiteral[194]]] [2020-12-23 17:36:24,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:36:24,910 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#arr~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[776],StructAccessExpression[IdentifierExpression[~#arr~0,],offset]]]] [2020-12-23 17:36:24,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:36:24,944 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:36:24,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24 WrapperNode [2020-12-23 17:36:24,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:36:24,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:36:24,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:36:24,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:36:24,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:36:24,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:36:24,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:36:24,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:36:24,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:25,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:25,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:25,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:25,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:36:25,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:36:25,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:36:25,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:36:25,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (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 17:36:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:36:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:36:25,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:36:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:36:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:36:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:36:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:36:25,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:36:25,334 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 17:36:25,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:25 BoogieIcfgContainer [2020-12-23 17:36:25,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:36:25,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:36:25,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:36:25,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:36:25,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:36:24" (1/3) ... [2020-12-23 17:36:25,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f2c630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:36:25, skipping insertion in model container [2020-12-23 17:36:25,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (2/3) ... [2020-12-23 17:36:25,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f2c630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:36:25, skipping insertion in model container [2020-12-23 17:36:25,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:25" (3/3) ... [2020-12-23 17:36:25,367 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes4-2.c [2020-12-23 17:36:25,388 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:36:25,401 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 17:36:25,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 17:36:25,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:36:25,509 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:36:25,509 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:36:25,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:36:25,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:36:25,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:36:25,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:36:25,510 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:36:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-23 17:36:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 17:36:25,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:25,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 17:36:25,551 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:25,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:25,563 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-12-23 17:36:25,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:25,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108062726] [2020-12-23 17:36:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:25,891 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 17:36:25,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108062726] [2020-12-23 17:36:25,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:25,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:36:25,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964865789] [2020-12-23 17:36:25,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:25,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:25,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:25,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:25,928 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-12-23 17:36:25,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:25,995 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-12-23 17:36:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:26,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 17:36:26,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:26,025 INFO L225 Difference]: With dead ends: 15 [2020-12-23 17:36:26,025 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 17:36:26,028 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 [2020-12-23 17:36:26,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 17:36:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-23 17:36:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-23 17:36:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-23 17:36:26,086 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 3 [2020-12-23 17:36:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:26,087 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-23 17:36:26,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-23 17:36:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 17:36:26,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:26,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 17:36:26,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:36:26,089 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:26,090 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-12-23 17:36:26,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:26,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561810326] [2020-12-23 17:36:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:26,147 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 17:36:26,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561810326] [2020-12-23 17:36:26,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:26,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:36:26,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243131477] [2020-12-23 17:36:26,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:26,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:26,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:26,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:26,152 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2020-12-23 17:36:26,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:26,167 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-12-23 17:36:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:26,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 17:36:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:26,169 INFO L225 Difference]: With dead ends: 12 [2020-12-23 17:36:26,169 INFO L226 Difference]: Without dead ends: 12 [2020-12-23 17:36:26,170 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 [2020-12-23 17:36:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-23 17:36:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-23 17:36:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-23 17:36:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-23 17:36:26,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2020-12-23 17:36:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:26,174 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-23 17:36:26,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:26,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-23 17:36:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:36:26,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:26,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:26,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:36:26,176 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:26,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1803025956, now seen corresponding path program 1 times [2020-12-23 17:36:26,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:26,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797851050] [2020-12-23 17:36:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:36:26,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:36:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:36:26,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:36:26,288 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 17:36:26,288 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 17:36:26,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:36:26,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:36:26 BoogieIcfgContainer [2020-12-23 17:36:26,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:36:26,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:36:26,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:36:26,315 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:36:26,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:25" (3/4) ... [2020-12-23 17:36:26,318 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 17:36:26,361 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety-ext3/scopes4-2.c-witness.graphml [2020-12-23 17:36:26,362 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:36:26,364 INFO L168 Benchmark]: Toolchain (without parser) took 1647.31 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 109.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,365 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:36:26,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.09 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.19 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,368 INFO L168 Benchmark]: Boogie Preprocessor took 23.94 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,368 INFO L168 Benchmark]: RCFGBuilder took 334.13 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 102.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,369 INFO L168 Benchmark]: TraceAbstraction took 963.99 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 111.2 MB in the end (delta: -9.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:36:26,370 INFO L168 Benchmark]: Witness Printer took 46.88 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 109.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 228.09 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.19 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.94 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 334.13 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 102.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 963.99 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 111.2 MB in the end (delta: -9.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 46.88 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 109.6 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: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L12] int arr[123]; [L5] int arr[1024]; [L6] arr[194] = 13 [L7] return arr + 1; [L7] return arr + 1; [L13] return foo2(); [L17] int *a = foo(); [L18] \read(*a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 3 SDslu, 10 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 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...