/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-dcfa08f [2020-12-23 06:24:53,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:24:53,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:24:53,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:24:53,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:24:53,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:24:53,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:24:53,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:24:53,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:24:53,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:24:53,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:24:53,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:24:53,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:24:53,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:24:53,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:24:53,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:24:53,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:24:53,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:24:53,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:24:53,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:24:53,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:24:53,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:24:53,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:24:53,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:24:53,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 06:24:53,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 06:24:53,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 06:24:53,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 06:24:53,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 06:24:53,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 06:24:53,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:24:53,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:24:53,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:24:53,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:24:53,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:24:53,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:24:53,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:24:53,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:24:53,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:24:53,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:24:53,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:24:53,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:24:53,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:24:53,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:24:53,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:24:53,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:24:53,959 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:24:53,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:24:53,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:24:53,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:24:53,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:24:53,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:24:53,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:24:53,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:24:53,961 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:24:53,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:24:53,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:24:53,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:24:53,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:24:53,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:24:53,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:24:53,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:24:53,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:24:53,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:24:53,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:24:53,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:24:53,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:24:53,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:24:54,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:24:54,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:24:54,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:24:54,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:24:54,381 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:24:54,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-12-23 06:24:54,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/381ab41c4/f9c429b39bfd410fbfdec121f3be8459/FLAGfabddd9b1 [2020-12-23 06:24:55,206 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:24:55,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-12-23 06:24:55,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/381ab41c4/f9c429b39bfd410fbfdec121f3be8459/FLAGfabddd9b1 [2020-12-23 06:24:55,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/381ab41c4/f9c429b39bfd410fbfdec121f3be8459 [2020-12-23 06:24:55,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:24:55,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:24:55,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:24:55,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:24:55,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:24:55,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:24:55" (1/1) ... [2020-12-23 06:24:55,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3779babb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:55, skipping insertion in model container [2020-12-23 06:24:55,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:24:55" (1/1) ... [2020-12-23 06:24:55,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:24:55,597 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,] [2020-12-23 06:24:56,170 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,] [2020-12-23 06:24:56,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:24:56,188 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,] [2020-12-23 06:24:56,230 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,] [2020-12-23 06:24:56,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:24:56,306 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:24:56,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56 WrapperNode [2020-12-23 06:24:56,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:24:56,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:24:56,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:24:56,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:24:56,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (1/1) ... [2020-12-23 06:24:56,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (1/1) ... [2020-12-23 06:24:56,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:24:56,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:24:56,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:24:56,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:24:56,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (1/1) ... [2020-12-23 06:24:56,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (1/1) ... [2020-12-23 06:24:56,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (1/1) ... [2020-12-23 06:24:56,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (1/1) ... [2020-12-23 06:24:56,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (1/1) ... [2020-12-23 06:24:56,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (1/1) ... [2020-12-23 06:24:56,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (1/1) ... [2020-12-23 06:24:56,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:24:56,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:24:56,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:24:56,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:24:56,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (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 06:24:56,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:24:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:24:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 06:24:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 06:24:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:24:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 06:24:56,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:24:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:24:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:24:56,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:24:57,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:24:57,114 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-23 06:24:57,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:24:57 BoogieIcfgContainer [2020-12-23 06:24:57,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:24:57,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:24:57,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:24:57,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:24:57,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:24:55" (1/3) ... [2020-12-23 06:24:57,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f83a49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:24:57, skipping insertion in model container [2020-12-23 06:24:57,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:24:56" (2/3) ... [2020-12-23 06:24:57,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f83a49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:24:57, skipping insertion in model container [2020-12-23 06:24:57,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:24:57" (3/3) ... [2020-12-23 06:24:57,132 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-12-23 06:24:57,144 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:24:57,152 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:24:57,173 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:24:57,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:24:57,219 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:24:57,220 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:24:57,220 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:24:57,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:24:57,220 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:24:57,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:24:57,220 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:24:57,240 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-23 06:24:57,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:24:57,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:24:57,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:24:57,249 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:24:57,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:24:57,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1648325711, now seen corresponding path program 1 times [2020-12-23 06:24:57,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:24:57,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501850642] [2020-12-23 06:24:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:24:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:24:57,436 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 06:24:57,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501850642] [2020-12-23 06:24:57,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:24:57,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:24:57,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124737542] [2020-12-23 06:24:57,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:24:57,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:24:57,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:24:57,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:24:57,466 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-23 06:24:57,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:24:57,490 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2020-12-23 06:24:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:24:57,492 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-23 06:24:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:24:57,503 INFO L225 Difference]: With dead ends: 55 [2020-12-23 06:24:57,503 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 06:24:57,506 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 [2020-12-23 06:24:57,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 06:24:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 06:24:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 06:24:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-12-23 06:24:57,549 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2020-12-23 06:24:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:24:57,550 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-12-23 06:24:57,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:24:57,550 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2020-12-23 06:24:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 06:24:57,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:24:57,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:24:57,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:24:57,552 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:24:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:24:57,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1013764981, now seen corresponding path program 1 times [2020-12-23 06:24:57,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:24:57,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868683285] [2020-12-23 06:24:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:24:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:24:57,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:24:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:24:57,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:24:57,708 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:24:57,709 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:24:57,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:24:57,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:24:57 BoogieIcfgContainer [2020-12-23 06:24:57,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:24:57,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:24:57,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:24:57,752 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:24:57,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:24:57" (3/4) ... [2020-12-23 06:24:57,755 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 06:24:57,823 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-ext-properties/list-ext.i-witness.graphml [2020-12-23 06:24:57,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:24:57,826 INFO L168 Benchmark]: Toolchain (without parser) took 2330.85 ms. Allocated memory is still 156.2 MB. Free memory was 129.7 MB in the beginning and 91.7 MB in the end (delta: 38.0 MB). Peak memory consumption was 37.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:24:57,826 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:24:57,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.84 ms. Allocated memory is still 156.2 MB. Free memory was 129.5 MB in the beginning and 107.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:24:57,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.17 ms. Allocated memory is still 156.2 MB. Free memory was 106.9 MB in the beginning and 105.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:24:57,829 INFO L168 Benchmark]: Boogie Preprocessor took 38.40 ms. Allocated memory is still 156.2 MB. Free memory was 104.9 MB in the beginning and 103.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:24:57,830 INFO L168 Benchmark]: RCFGBuilder took 710.86 ms. Allocated memory is still 156.2 MB. Free memory was 103.4 MB in the beginning and 118.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. [2020-12-23 06:24:57,830 INFO L168 Benchmark]: TraceAbstraction took 628.21 ms. Allocated memory is still 156.2 MB. Free memory was 117.9 MB in the beginning and 94.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:24:57,831 INFO L168 Benchmark]: Witness Printer took 71.86 ms. Allocated memory is still 156.2 MB. Free memory was 94.3 MB in the beginning and 91.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:24:57,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 806.84 ms. Allocated memory is still 156.2 MB. Free memory was 129.5 MB in the beginning and 107.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.17 ms. Allocated memory is still 156.2 MB. Free memory was 106.9 MB in the beginning and 105.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.40 ms. Allocated memory is still 156.2 MB. Free memory was 104.9 MB in the beginning and 103.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 710.86 ms. Allocated memory is still 156.2 MB. Free memory was 103.4 MB in the beginning and 118.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 628.21 ms. Allocated memory is still 156.2 MB. Free memory was 117.9 MB in the beginning and 94.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Witness Printer took 71.86 ms. Allocated memory is still 156.2 MB. Free memory was 94.3 MB in the beginning and 91.7 MB in the end (delta: 2.6 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: 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...