/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/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:16:11,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:16:11,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:16:11,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:16:11,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:16:11,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:16:11,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:16:11,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:16:11,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:16:11,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:16:11,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:16:11,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:16:11,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:16:11,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:16:11,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:16:11,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:16:11,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:16:11,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:16:11,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:16:11,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:16:11,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:16:11,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:16:11,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:16:11,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:16:11,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:16:11,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 01:16:11,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 01:16:11,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 01:16:11,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 01:16:11,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 01:16:11,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 01:16:11,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 01:16:11,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 01:16:11,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:16:11,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:16:11,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:16:11,667 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 01:16:11,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:16:11,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:16:11,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:16:11,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:16:11,712 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:16:11,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:16:11,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:16:11,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:16:11,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:16:11,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:16:11,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:16:11,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:16:11,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:16:11,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:16:11,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:16:11,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:16:11,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:16:11,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:16:11,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:16:11,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:16:11,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:16:11,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:16:11,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:16:11,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:16:11,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:16:11,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:16:12,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:16:12,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:16:12,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:16:12,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:16:12,122 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:16:12,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condgf.c [2020-12-23 01:16:12,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/202b35e02/e5f56ed96f684e5fb5ab8a799ce8c656/FLAGa73625cde [2020-12-23 01:16:12,907 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:16:12,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/condgf.c [2020-12-23 01:16:12,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/202b35e02/e5f56ed96f684e5fb5ab8a799ce8c656/FLAGa73625cde [2020-12-23 01:16:13,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/202b35e02/e5f56ed96f684e5fb5ab8a799ce8c656 [2020-12-23 01:16:13,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:16:13,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:16:13,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:16:13,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:16:13,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:16:13,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62fc097b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13, skipping insertion in model container [2020-12-23 01:16:13,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:16:13,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:16:13,449 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/condgf.c[589,602] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[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[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[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[4],IdentifierExpression[~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[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:16:13,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:16:13,482 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:16:13,495 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/condgf.c[589,602] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] 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[4],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[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] 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[4],IdentifierExpression[~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[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:16:13,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:16:13,524 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:16:13,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13 WrapperNode [2020-12-23 01:16:13,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:16:13,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:16:13,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:16:13,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:16:13,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:16:13,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:16:13,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:16:13,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:16:13,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (1/1) ... [2020-12-23 01:16:13,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:16:13,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:16:13,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:16:13,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:16:13,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (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 01:16:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:16:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:16:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:16:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:16:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:16:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:16:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:16:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:16:14,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:16:14,178 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-23 01:16:14,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:16:14 BoogieIcfgContainer [2020-12-23 01:16:14,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:16:14,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:16:14,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:16:14,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:16:14,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:16:13" (1/3) ... [2020-12-23 01:16:14,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@911aff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:16:14, skipping insertion in model container [2020-12-23 01:16:14,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:16:13" (2/3) ... [2020-12-23 01:16:14,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@911aff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:16:14, skipping insertion in model container [2020-12-23 01:16:14,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:16:14" (3/3) ... [2020-12-23 01:16:14,216 INFO L111 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-12-23 01:16:14,223 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:16:14,228 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:16:14,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:16:14,298 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:16:14,298 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:16:14,298 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:16:14,298 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:16:14,298 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:16:14,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:16:14,299 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:16:14,299 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:16:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-23 01:16:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:16:14,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:14,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:14,323 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:14,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:14,330 INFO L82 PathProgramCache]: Analyzing trace with hash -592817118, now seen corresponding path program 1 times [2020-12-23 01:16:14,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:14,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562012323] [2020-12-23 01:16:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:14,514 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 01:16:14,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562012323] [2020-12-23 01:16:14,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:16:14,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:16:14,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769971541] [2020-12-23 01:16:14,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:16:14,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:14,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:16:14,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:16:14,542 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-12-23 01:16:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:14,562 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2020-12-23 01:16:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:16:14,564 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-23 01:16:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:14,573 INFO L225 Difference]: With dead ends: 46 [2020-12-23 01:16:14,573 INFO L226 Difference]: Without dead ends: 21 [2020-12-23 01:16:14,577 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 01:16:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-23 01:16:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-23 01:16:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-23 01:16:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-12-23 01:16:14,619 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-12-23 01:16:14,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:14,619 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-12-23 01:16:14,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:16:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-12-23 01:16:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:16:14,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:14,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:14,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:16:14,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:14,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:14,622 INFO L82 PathProgramCache]: Analyzing trace with hash 108247460, now seen corresponding path program 1 times [2020-12-23 01:16:14,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:14,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872435848] [2020-12-23 01:16:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:14,767 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 01:16:14,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872435848] [2020-12-23 01:16:14,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:16:14,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:16:14,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819943742] [2020-12-23 01:16:14,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:16:14,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:14,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:16:14,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:16:14,775 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2020-12-23 01:16:14,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:14,905 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2020-12-23 01:16:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:16:14,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 01:16:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:14,907 INFO L225 Difference]: With dead ends: 48 [2020-12-23 01:16:14,907 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 01:16:14,908 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 01:16:14,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 01:16:14,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2020-12-23 01:16:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 01:16:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-12-23 01:16:14,916 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2020-12-23 01:16:14,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:14,916 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-12-23 01:16:14,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:16:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-12-23 01:16:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 01:16:14,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:14,917 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] [2020-12-23 01:16:14,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:16:14,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:14,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:14,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1242970242, now seen corresponding path program 1 times [2020-12-23 01:16:14,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:14,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180556410] [2020-12-23 01:16:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:15,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180556410] [2020-12-23 01:16:15,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853067019] [2020-12-23 01:16:15,663 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 01:16:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:15,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 01:16:15,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:15,890 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:16:15,903 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:15,921 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:15,946 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 01:16:15,948 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:15,961 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:15,967 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:15,968 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-12-23 01:16:16,036 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 01:16:16,045 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:16,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:16,063 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:16,064 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2020-12-23 01:16:16,295 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-12-23 01:16:16,298 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:16,314 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:16,318 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:16,318 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:22 [2020-12-23 01:16:16,453 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-12-23 01:16:16,460 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:16,472 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:16,476 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:16,477 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:7 [2020-12-23 01:16:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:16,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:16,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2020-12-23 01:16:16,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112355172] [2020-12-23 01:16:16,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 01:16:16,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:16,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 01:16:16,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-12-23 01:16:16,539 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 18 states. [2020-12-23 01:16:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:17,524 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-12-23 01:16:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 01:16:17,524 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-12-23 01:16:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:17,526 INFO L225 Difference]: With dead ends: 61 [2020-12-23 01:16:17,526 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 01:16:17,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2020-12-23 01:16:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 01:16:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2020-12-23 01:16:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 01:16:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-12-23 01:16:17,535 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 21 [2020-12-23 01:16:17,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:17,536 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-12-23 01:16:17,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 01:16:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-12-23 01:16:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 01:16:17,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:17,537 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] [2020-12-23 01:16:17,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 01:16:17,750 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:17,751 INFO L82 PathProgramCache]: Analyzing trace with hash 532037120, now seen corresponding path program 1 times [2020-12-23 01:16:17,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:17,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982542613] [2020-12-23 01:16:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:16:17,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:16:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:16:17,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:16:17,840 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 01:16:17,840 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 01:16:17,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 01:16:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:16:17 BoogieIcfgContainer [2020-12-23 01:16:17,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:16:17,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:16:17,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:16:17,893 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:16:17,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:16:14" (3/4) ... [2020-12-23 01:16:17,895 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 01:16:17,979 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-fpi/condgf.c-witness.graphml [2020-12-23 01:16:17,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:16:17,982 INFO L168 Benchmark]: Toolchain (without parser) took 4726.41 ms. Allocated memory was 154.1 MB in the beginning and 210.8 MB in the end (delta: 56.6 MB). Free memory was 130.1 MB in the beginning and 135.4 MB in the end (delta: -5.3 MB). Peak memory consumption was 52.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:16:17,983 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:16:17,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.33 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 119.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:16:17,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.83 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:16:17,985 INFO L168 Benchmark]: Boogie Preprocessor took 35.79 ms. Allocated memory is still 154.1 MB. Free memory was 118.0 MB in the beginning and 116.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:16:17,985 INFO L168 Benchmark]: RCFGBuilder took 573.79 ms. Allocated memory is still 154.1 MB. Free memory was 116.7 MB in the beginning and 136.2 MB in the end (delta: -19.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2020-12-23 01:16:17,986 INFO L168 Benchmark]: TraceAbstraction took 3705.34 ms. Allocated memory was 154.1 MB in the beginning and 210.8 MB in the end (delta: 56.6 MB). Free memory was 135.7 MB in the beginning and 138.0 MB in the end (delta: -2.3 MB). Peak memory consumption was 54.9 MB. Max. memory is 8.0 GB. [2020-12-23 01:16:17,987 INFO L168 Benchmark]: Witness Printer took 87.79 ms. Allocated memory is still 210.8 MB. Free memory was 138.0 MB in the beginning and 135.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:16:17,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.33 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 119.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.83 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.79 ms. Allocated memory is still 154.1 MB. Free memory was 118.0 MB in the beginning and 116.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 573.79 ms. Allocated memory is still 154.1 MB. Free memory was 116.7 MB in the beginning and 136.2 MB in the end (delta: -19.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3705.34 ms. Allocated memory was 154.1 MB in the beginning and 210.8 MB in the end (delta: 56.6 MB). Free memory was 135.7 MB in the beginning and 138.0 MB in the end (delta: -2.3 MB). Peak memory consumption was 54.9 MB. Max. memory is 8.0 GB. * Witness Printer took 87.79 ms. Allocated memory is still 210.8 MB. Free memory was 138.0 MB in the beginning and 135.4 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 sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i