/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/array-fpi/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:21:02,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:21:02,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:21:02,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:21:02,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:21:02,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:21:02,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:21:02,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:21:02,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:21:02,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:21:02,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:21:02,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:21:02,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:21:02,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:21:02,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:21:02,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:21:02,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:21:02,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:21:02,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:21:02,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:21:02,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:21:02,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:21:02,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:21:02,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:21:02,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:21:02,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 01:21:02,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 01:21:02,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 01:21:02,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 01:21:03,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 01:21:03,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 01:21:03,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 01:21:03,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 01:21:03,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:21:03,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:21:03,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:21:03,034 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 01:21:03,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:21:03,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:21:03,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:21:03,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:21:03,092 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:21:03,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:21:03,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:21:03,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:21:03,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:21:03,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:21:03,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:21:03,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:21:03,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:21:03,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:21:03,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:21:03,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:21:03,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:21:03,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:21:03,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:21:03,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:21:03,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:21:03,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:21:03,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:21:03,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:21:03,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:21:03,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:21:03,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:21:03,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:21:03,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:21:03,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:21:03,518 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:21:03,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/indp2f.c [2020-12-23 01:21:03,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/108da01a8/0a17c24738e747e3b197187dc95fbf75/FLAGf58508183 [2020-12-23 01:21:04,346 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:21:04,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/indp2f.c [2020-12-23 01:21:04,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/108da01a8/0a17c24738e747e3b197187dc95fbf75/FLAGf58508183 [2020-12-23 01:21:04,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/108da01a8/0a17c24738e747e3b197187dc95fbf75 [2020-12-23 01:21:04,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:21:04,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:21:04,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:21:04,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:21:04,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:21:04,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388b2db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04, skipping insertion in model container [2020-12-23 01:21:04,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:21:04,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:21:04,804 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/array-fpi/indp2f.c[589,602] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:21:04,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:21:04,841 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:21:04,855 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/array-fpi/indp2f.c[589,602] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:21:04,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:21:04,886 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:21:04,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04 WrapperNode [2020-12-23 01:21:04,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:21:04,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:21:04,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:21:04,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:21:04,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:21:04,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:21:04,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:21:04,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:21:04,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (1/1) ... [2020-12-23 01:21:04,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:21:04,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:21:04,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:21:04,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:21:04,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (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 01:21:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:21:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:21:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:21:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:21:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:21:05,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:21:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:21:05,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:21:05,459 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-23 01:21:05,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:05 BoogieIcfgContainer [2020-12-23 01:21:05,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:21:05,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:21:05,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:21:05,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:21:05,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:21:04" (1/3) ... [2020-12-23 01:21:05,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775c2d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:21:05, skipping insertion in model container [2020-12-23 01:21:05,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:04" (2/3) ... [2020-12-23 01:21:05,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775c2d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:21:05, skipping insertion in model container [2020-12-23 01:21:05,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:05" (3/3) ... [2020-12-23 01:21:05,486 INFO L111 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-12-23 01:21:05,507 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:21:05,519 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:21:05,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:21:05,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:21:05,631 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:21:05,631 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:21:05,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:21:05,631 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:21:05,631 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:21:05,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:21:05,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:21:05,666 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-23 01:21:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:21:05,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:05,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:05,673 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2020-12-23 01:21:05,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:05,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679703888] [2020-12-23 01:21:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:05,885 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 01:21:05,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679703888] [2020-12-23 01:21:05,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:21:05,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:21:05,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308654173] [2020-12-23 01:21:05,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:21:05,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:05,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:21:05,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:21:05,920 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-23 01:21:05,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:05,948 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2020-12-23 01:21:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:21:05,950 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-23 01:21:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:05,972 INFO L225 Difference]: With dead ends: 44 [2020-12-23 01:21:05,972 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 01:21:05,984 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 01:21:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 01:21:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 01:21:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 01:21:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-23 01:21:06,032 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-12-23 01:21:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:06,033 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-23 01:21:06,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:21:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-23 01:21:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:21:06,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:06,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:06,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:21:06,036 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:06,041 INFO L82 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2020-12-23 01:21:06,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:06,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895498253] [2020-12-23 01:21:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:06,200 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 01:21:06,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895498253] [2020-12-23 01:21:06,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:21:06,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:21:06,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694471866] [2020-12-23 01:21:06,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:21:06,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:06,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:21:06,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:21:06,205 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-12-23 01:21:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:06,333 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2020-12-23 01:21:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:21:06,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 01:21:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:06,336 INFO L225 Difference]: With dead ends: 45 [2020-12-23 01:21:06,337 INFO L226 Difference]: Without dead ends: 32 [2020-12-23 01:21:06,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:21:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-23 01:21:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-12-23 01:21:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 01:21:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-23 01:21:06,352 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-12-23 01:21:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:06,353 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-23 01:21:06,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:21:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-23 01:21:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:21:06,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:06,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:06,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:21:06,356 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:06,358 INFO L82 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2020-12-23 01:21:06,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:06,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95668428] [2020-12-23 01:21:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:06,397 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:21:06,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379995168] [2020-12-23 01:21:06,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:21:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:21:06,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:21:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:21:06,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:21:06,565 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 01:21:06,566 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 01:21:06,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 01:21:06,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:21:06 BoogieIcfgContainer [2020-12-23 01:21:06,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:21:06,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:21:06,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:21:06,837 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:21:06,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:05" (3/4) ... [2020-12-23 01:21:06,840 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 01:21:06,904 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-fpi/indp2f.c-witness.graphml [2020-12-23 01:21:06,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:21:06,906 INFO L168 Benchmark]: Toolchain (without parser) took 2293.27 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 87.6 MB in the end (delta: 41.0 MB). Peak memory consumption was 40.8 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:06,907 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 153.1 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:21:06,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.08 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 118.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:06,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.98 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:06,909 INFO L168 Benchmark]: Boogie Preprocessor took 32.49 ms. Allocated memory is still 153.1 MB. Free memory was 116.5 MB in the beginning and 115.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:06,910 INFO L168 Benchmark]: RCFGBuilder took 496.46 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 134.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:06,911 INFO L168 Benchmark]: TraceAbstraction took 1367.42 ms. Allocated memory is still 153.1 MB. Free memory was 134.3 MB in the beginning and 90.2 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:06,912 INFO L168 Benchmark]: Witness Printer took 67.60 ms. Allocated memory is still 153.1 MB. Free memory was 90.2 MB in the beginning and 87.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:06,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 153.1 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.08 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 118.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.98 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.49 ms. Allocated memory is still 153.1 MB. Free memory was 116.5 MB in the beginning and 115.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 496.46 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 134.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1367.42 ms. Allocated memory is still 153.1 MB. Free memory was 134.3 MB in the beginning and 90.2 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. * Witness Printer took 67.60 ms. Allocated memory is still 153.1 MB. Free memory was 90.2 MB in the beginning and 87.6 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [N=1] [L30] COND TRUE i