/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-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-ext-properties/list-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:19:16,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:19:16,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:19:16,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:19:16,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:19:16,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:19:16,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:19:16,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:19:16,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:19:16,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:19:16,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:19:16,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:19:16,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:19:16,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:19:16,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:19:16,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:19:16,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:19:16,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:19:16,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:19:16,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:19:16,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:19:16,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:19:16,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:19:16,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:19:16,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:19:16,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:19:16,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:19:16,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:19:16,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:19:16,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:19:16,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:19:16,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:19:16,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:19:16,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:19:16,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:19:16,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:19:16,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:19:16,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:19:16,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:19:16,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:19:16,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:19:16,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:19:16,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:19:16,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:19:16,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:19:16,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:19:16,832 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:19:16,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:19:16,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:19:16,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:19:16,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:19:16,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:19:16,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:19:16,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:19:16,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:19:16,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:19:16,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:19:16,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:19:16,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:19:16,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:19:16,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:19:16,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:19:16,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:19:16,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:19:16,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:19:16,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:19:16,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:19:16,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:19:17,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:19:17,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:19:17,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:19:17,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:19:17,330 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:19:17,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-01-06 16:19:17,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4eecb83f8/26a24dfdebbd40b48110693e5b34d262/FLAGf57010be9 [2021-01-06 16:19:18,096 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:19:18,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-01-06 16:19:18,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4eecb83f8/26a24dfdebbd40b48110693e5b34d262/FLAGf57010be9 [2021-01-06 16:19:18,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4eecb83f8/26a24dfdebbd40b48110693e5b34d262 [2021-01-06 16:19:18,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:19:18,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:19:18,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:19:18,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:19:18,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:19:18,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:19:18" (1/1) ... [2021-01-06 16:19:18,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500c296f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:18, skipping insertion in model container [2021-01-06 16:19:18,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:19:18" (1/1) ... [2021-01-06 16:19:18,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:19:18,482 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2021-01-06 16:19:18,956 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2021-01-06 16:19:18,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:19:18,987 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2021-01-06 16:19:19,070 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2021-01-06 16:19:19,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:19:19,135 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:19:19,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19 WrapperNode [2021-01-06 16:19:19,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:19:19,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:19:19,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:19:19,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:19:19,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (1/1) ... [2021-01-06 16:19:19,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (1/1) ... [2021-01-06 16:19:19,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:19:19,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:19:19,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:19:19,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:19:19,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (1/1) ... [2021-01-06 16:19:19,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (1/1) ... [2021-01-06 16:19:19,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (1/1) ... [2021-01-06 16:19:19,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (1/1) ... [2021-01-06 16:19:19,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (1/1) ... [2021-01-06 16:19:19,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (1/1) ... [2021-01-06 16:19:19,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (1/1) ... [2021-01-06 16:19:19,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:19:19,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:19:19,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:19:19,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:19:19,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (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 [2021-01-06 16:19:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:19:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:19:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 16:19:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-06 16:19:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:19:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-06 16:19:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:19:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:19:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:19:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:19:20,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:19:20,072 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-01-06 16:19:20,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:19:20 BoogieIcfgContainer [2021-01-06 16:19:20,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:19:20,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:19:20,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:19:20,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:19:20,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:19:18" (1/3) ... [2021-01-06 16:19:20,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3903a0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:19:20, skipping insertion in model container [2021-01-06 16:19:20,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:19:19" (2/3) ... [2021-01-06 16:19:20,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3903a0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:19:20, skipping insertion in model container [2021-01-06 16:19:20,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:19:20" (3/3) ... [2021-01-06 16:19:20,083 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-01-06 16:19:20,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:19:20,096 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:19:20,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:19:20,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:19:20,145 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:19:20,146 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:19:20,146 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:19:20,146 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:19:20,146 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:19:20,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:19:20,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:19:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-01-06 16:19:20,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 16:19:20,169 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:19:20,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:19:20,170 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:19:20,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:19:20,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1648325711, now seen corresponding path program 1 times [2021-01-06 16:19:20,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:19:20,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023505155] [2021-01-06 16:19:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:19:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:19:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:19:20,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023505155] [2021-01-06 16:19:20,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:19:20,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:19:20,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384316641] [2021-01-06 16:19:20,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:19:20,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:19:20,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:19:20,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:19:20,399 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2021-01-06 16:19:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:19:20,419 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2021-01-06 16:19:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:19:20,421 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2021-01-06 16:19:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:19:20,430 INFO L225 Difference]: With dead ends: 55 [2021-01-06 16:19:20,430 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 16:19:20,433 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 [2021-01-06 16:19:20,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 16:19:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 16:19:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 16:19:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-01-06 16:19:20,469 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2021-01-06 16:19:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:19:20,470 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-01-06 16:19:20,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:19:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-01-06 16:19:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 16:19:20,471 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:19:20,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:19:20,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:19:20,472 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:19:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:19:20,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1013764981, now seen corresponding path program 1 times [2021-01-06 16:19:20,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:19:20,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734840889] [2021-01-06 16:19:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:19:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:19:20,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:19:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:19:20,544 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:19:20,574 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:19:20,574 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:19:20,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:19:20,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:19:20 BoogieIcfgContainer [2021-01-06 16:19:20,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:19:20,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:19:20,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:19:20,612 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:19:20,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:19:20" (3/4) ... [2021-01-06 16:19:20,615 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 16:19:20,668 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-ext-properties/list-ext.i-witness.graphml [2021-01-06 16:19:20,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:19:20,671 INFO L168 Benchmark]: Toolchain (without parser) took 2275.58 ms. Allocated memory is still 159.4 MB. Free memory was 133.7 MB in the beginning and 94.3 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:19:20,672 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:19:20,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.42 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 111.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:19:20,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.91 ms. Allocated memory is still 159.4 MB. Free memory was 111.0 MB in the beginning and 108.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:19:20,674 INFO L168 Benchmark]: Boogie Preprocessor took 40.15 ms. Allocated memory is still 159.4 MB. Free memory was 108.9 MB in the beginning and 107.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:19:20,675 INFO L168 Benchmark]: RCFGBuilder took 843.91 ms. Allocated memory is still 159.4 MB. Free memory was 107.3 MB in the beginning and 120.4 MB in the end (delta: -13.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:19:20,675 INFO L168 Benchmark]: TraceAbstraction took 535.03 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 97.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:19:20,676 INFO L168 Benchmark]: Witness Printer took 56.46 ms. Allocated memory is still 159.4 MB. Free memory was 96.8 MB in the beginning and 94.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:19:20,680 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 738.42 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 111.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.91 ms. Allocated memory is still 159.4 MB. Free memory was 111.0 MB in the beginning and 108.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.15 ms. Allocated memory is still 159.4 MB. Free memory was 108.9 MB in the beginning and 107.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 843.91 ms. Allocated memory is still 159.4 MB. Free memory was 107.3 MB in the beginning and 120.4 MB in the end (delta: -13.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 535.03 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 97.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Witness Printer took 56.46 ms. Allocated memory is still 159.4 MB. Free memory was 96.8 MB in the beginning and 94.7 MB in the end (delta: 2.1 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: 568]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...