/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/indp3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:21:20,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:21:20,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:21:20,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:21:20,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:21:20,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:21:20,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:21:20,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:21:20,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:21:20,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:21:20,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:21:20,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:21:20,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:21:20,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:21:20,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:21:20,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:21:20,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:21:20,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:21:20,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:21:20,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:21:20,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:21:20,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:21:20,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:21:20,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:21:20,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:21:20,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:21:20,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:21:20,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:21:20,401 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 01:21:20,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:21:20,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:21:20,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:21:20,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:21:20,436 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:21:20,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:21:20,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:21:20,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:21:20,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:21:20,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:21:20,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:21:20,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:21:20,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:21:20,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:21:20,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:21:20,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:21:20,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:21:20,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:21:20,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:21:20,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:21:20,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:21:20,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:21:20,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:21:20,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:21:20,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:21:20,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:21:20,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:21:21,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:21:21,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:21:21,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:21:21,030 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:21:21,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/indp3f.c [2020-12-23 01:21:21,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9b9f1dc12/3a9d6d0f97b54a06bbf84305800ba182/FLAG9e2850b39 [2020-12-23 01:21:21,937 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:21:21,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/indp3f.c [2020-12-23 01:21:21,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9b9f1dc12/3a9d6d0f97b54a06bbf84305800ba182/FLAG9e2850b39 [2020-12-23 01:21:22,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9b9f1dc12/3a9d6d0f97b54a06bbf84305800ba182 [2020-12-23 01:21:22,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:21:22,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:21:22,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:21:22,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:21:22,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:21:22,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69dd64d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22, skipping insertion in model container [2020-12-23 01:21:22,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:21:22,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:21:22,480 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/indp3f.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,] 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 01:21:22,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:21:22,523 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:21:22,537 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/indp3f.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,] 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 01:21:22,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:21:22,566 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:21:22,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22 WrapperNode [2020-12-23 01:21:22,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:21:22,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:21:22,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:21:22,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:21:22,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:21:22,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:21:22,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:21:22,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:21:22,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (1/1) ... [2020-12-23 01:21:22,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:21:22,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:21:22,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:21:22,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:21:22,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (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 01:21:22,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:21:22,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:21:22,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:21:22,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:21:22,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:21:22,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:21:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:21:23,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:21:23,171 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-23 01:21:23,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:23 BoogieIcfgContainer [2020-12-23 01:21:23,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:21:23,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:21:23,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:21:23,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:21:23,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:21:22" (1/3) ... [2020-12-23 01:21:23,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bddba1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:21:23, skipping insertion in model container [2020-12-23 01:21:23,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:22" (2/3) ... [2020-12-23 01:21:23,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bddba1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:21:23, skipping insertion in model container [2020-12-23 01:21:23,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:23" (3/3) ... [2020-12-23 01:21:23,186 INFO L111 eAbstractionObserver]: Analyzing ICFG indp3f.c [2020-12-23 01:21:23,195 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:21:23,202 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:21:23,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:21:23,296 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:21:23,297 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:21:23,299 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:21:23,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:21:23,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:21:23,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:21:23,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:21:23,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:21:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-23 01:21:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:21:23,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:23,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:23,352 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:23,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:23,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2020-12-23 01:21:23,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:23,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027690841] [2020-12-23 01:21:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:23,594 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 01:21:23,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027690841] [2020-12-23 01:21:23,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:21:23,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:21:23,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241482558] [2020-12-23 01:21:23,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:21:23,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:23,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:21:23,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:21:23,628 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-23 01:21:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:23,652 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2020-12-23 01:21:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:21:23,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-23 01:21:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:23,668 INFO L225 Difference]: With dead ends: 50 [2020-12-23 01:21:23,668 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 01:21:23,672 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 01:21:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 01:21:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 01:21:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 01:21:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-23 01:21:23,736 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-12-23 01:21:23,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:23,737 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-23 01:21:23,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:21:23,738 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-23 01:21:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:21:23,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:23,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:23,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:21:23,743 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:23,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:23,750 INFO L82 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2020-12-23 01:21:23,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:23,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460685480] [2020-12-23 01:21:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:23,994 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 01:21:23,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460685480] [2020-12-23 01:21:23,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:21:23,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:21:23,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371982112] [2020-12-23 01:21:23,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:21:24,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:24,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:21:24,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:21:24,005 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-12-23 01:21:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:24,295 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-12-23 01:21:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:21:24,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-23 01:21:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:24,299 INFO L225 Difference]: With dead ends: 53 [2020-12-23 01:21:24,300 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 01:21:24,302 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 01:21:24,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 01:21:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-12-23 01:21:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 01:21:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-12-23 01:21:24,320 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2020-12-23 01:21:24,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:24,320 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-12-23 01:21:24,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:21:24,321 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-12-23 01:21:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 01:21:24,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:24,324 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, 1, 1, 1, 1] [2020-12-23 01:21:24,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:21:24,326 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:24,329 INFO L82 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2020-12-23 01:21:24,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:24,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661349441] [2020-12-23 01:21:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:24,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:21:24,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090749917] [2020-12-23 01:21:24,373 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 01:21:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:21:24,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:21:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:21:24,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:21:24,651 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 01:21:24,651 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 01:21:24,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 01:21:24,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:21:24 BoogieIcfgContainer [2020-12-23 01:21:24,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:21:24,921 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:21:24,921 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:21:24,922 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:21:24,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:23" (3/4) ... [2020-12-23 01:21:24,926 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 01:21:25,027 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-fpi/indp3f.c-witness.graphml [2020-12-23 01:21:25,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:21:25,030 INFO L168 Benchmark]: Toolchain (without parser) took 2752.65 ms. Allocated memory is still 154.1 MB. Free memory was 130.1 MB in the beginning and 109.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:25,030 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 154.1 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:21:25,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.00 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 119.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:25,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.80 ms. Allocated memory is still 154.1 MB. Free memory was 119.8 MB in the beginning and 118.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:25,033 INFO L168 Benchmark]: Boogie Preprocessor took 72.58 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 116.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:25,034 INFO L168 Benchmark]: RCFGBuilder took 490.29 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 100.9 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:25,034 INFO L168 Benchmark]: TraceAbstraction took 1744.19 ms. Allocated memory is still 154.1 MB. Free memory was 100.4 MB in the beginning and 111.8 MB in the end (delta: -11.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:21:25,035 INFO L168 Benchmark]: Witness Printer took 106.34 ms. Allocated memory is still 154.1 MB. Free memory was 111.8 MB in the beginning and 109.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:25,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 154.1 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.00 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 119.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.80 ms. Allocated memory is still 154.1 MB. Free memory was 119.8 MB in the beginning and 118.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.58 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 116.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 490.29 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 100.9 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1744.19 ms. Allocated memory is still 154.1 MB. Free memory was 100.4 MB in the beginning and 111.8 MB in the end (delta: -11.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 106.34 ms. Allocated memory is still 154.1 MB. Free memory was 111.8 MB in the beginning and 109.1 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