/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/ms5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:24:51,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:24:51,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:24:51,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:24:51,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:24:51,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:24:51,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:24:51,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:24:51,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:24:51,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:24:51,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:24:51,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:24:51,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:24:51,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:24:51,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:24:51,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:24:51,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:24:51,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:24:51,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:24:51,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:24:51,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:24:51,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:24:51,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:24:51,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:24:51,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:24:51,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 01:24:51,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 01:24:51,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 01:24:51,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 01:24:51,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 01:24:51,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 01:24:51,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 01:24:51,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 01:24:51,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:24:51,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:24:51,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:24:51,163 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 01:24:51,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:24:51,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:24:51,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:24:51,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:24:51,192 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:24:51,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:24:51,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:24:51,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:24:51,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:24:51,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:24:51,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:24:51,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:24:51,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:24:51,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:24:51,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:24:51,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:24:51,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:24:51,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:24:51,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:24:51,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:24:51,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:24:51,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:24:51,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:24:51,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:24:51,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:24:51,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:24:51,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:24:51,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:24:51,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:24:51,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:24:51,710 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:24:51,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms5f.c [2020-12-23 01:24:51,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/65f14a7ce/229df9b415b74cdf8a142cf2776e7a56/FLAG57c8ab8d5 [2020-12-23 01:24:52,394 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:24:52,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/ms5f.c [2020-12-23 01:24:52,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/65f14a7ce/229df9b415b74cdf8a142cf2776e7a56/FLAG57c8ab8d5 [2020-12-23 01:24:52,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/65f14a7ce/229df9b415b74cdf8a142cf2776e7a56 [2020-12-23 01:24:52,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:24:52,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:24:52,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:24:52,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:24:52,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:24:52,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:24:52" (1/1) ... [2020-12-23 01:24:52,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12016146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:52, skipping insertion in model container [2020-12-23 01:24:52,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:24:52" (1/1) ... [2020-12-23 01:24:52,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:24:52,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:24:52,960 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/ms5f.c[587,600] 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[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: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] [2020-12-23 01:24:52,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:24:52,996 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:24:53,010 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/ms5f.c[587,600] 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[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: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] [2020-12-23 01:24:53,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:24:53,037 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:24:53,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53 WrapperNode [2020-12-23 01:24:53,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:24:53,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:24:53,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:24:53,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:24:53,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (1/1) ... [2020-12-23 01:24:53,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (1/1) ... [2020-12-23 01:24:53,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:24:53,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:24:53,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:24:53,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:24:53,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (1/1) ... [2020-12-23 01:24:53,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (1/1) ... [2020-12-23 01:24:53,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (1/1) ... [2020-12-23 01:24:53,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (1/1) ... [2020-12-23 01:24:53,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (1/1) ... [2020-12-23 01:24:53,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (1/1) ... [2020-12-23 01:24:53,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (1/1) ... [2020-12-23 01:24:53,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:24:53,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:24:53,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:24:53,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:24:53,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (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 01:24:53,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:24:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:24:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:24:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:24:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:24:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:24:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:24:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:24:53,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:24:53,573 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 01:24:53,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:24:53 BoogieIcfgContainer [2020-12-23 01:24:53,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:24:53,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:24:53,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:24:53,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:24:53,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:24:52" (1/3) ... [2020-12-23 01:24:53,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cca0f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:24:53, skipping insertion in model container [2020-12-23 01:24:53,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:53" (2/3) ... [2020-12-23 01:24:53,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cca0f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:24:53, skipping insertion in model container [2020-12-23 01:24:53,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:24:53" (3/3) ... [2020-12-23 01:24:53,612 INFO L111 eAbstractionObserver]: Analyzing ICFG ms5f.c [2020-12-23 01:24:53,620 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:24:53,626 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:24:53,662 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:24:53,691 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:24:53,691 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:24:53,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:24:53,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:24:53,692 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:24:53,692 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:24:53,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:24:53,692 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:24:53,706 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-23 01:24:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:24:53,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:24:53,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:24:53,714 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:24:53,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:24:53,721 INFO L82 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2020-12-23 01:24:53,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:24:53,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604802468] [2020-12-23 01:24:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:24:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:24:53,931 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 01:24:53,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604802468] [2020-12-23 01:24:53,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:24:53,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:24:53,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260282274] [2020-12-23 01:24:53,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:24:53,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:24:53,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:24:53,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:24:53,961 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-12-23 01:24:53,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:24:53,980 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2020-12-23 01:24:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:24:53,982 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 01:24:53,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:24:53,993 INFO L225 Difference]: With dead ends: 34 [2020-12-23 01:24:53,993 INFO L226 Difference]: Without dead ends: 15 [2020-12-23 01:24:53,997 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 01:24:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-23 01:24:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-23 01:24:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-23 01:24:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-23 01:24:54,037 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2020-12-23 01:24:54,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:24:54,038 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-23 01:24:54,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:24:54,038 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-23 01:24:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:24:54,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:24:54,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:24:54,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:24:54,040 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:24:54,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:24:54,041 INFO L82 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2020-12-23 01:24:54,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:24:54,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819541865] [2020-12-23 01:24:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:24:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:24:54,178 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 01:24:54,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819541865] [2020-12-23 01:24:54,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:24:54,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:24:54,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496786837] [2020-12-23 01:24:54,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:24:54,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:24:54,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:24:54,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:24:54,188 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2020-12-23 01:24:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:24:54,270 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-12-23 01:24:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:24:54,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 01:24:54,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:24:54,271 INFO L225 Difference]: With dead ends: 28 [2020-12-23 01:24:54,271 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 01:24:54,273 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 01:24:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 01:24:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-12-23 01:24:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 01:24:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-12-23 01:24:54,278 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2020-12-23 01:24:54,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:24:54,279 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-12-23 01:24:54,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:24:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-12-23 01:24:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:24:54,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:24:54,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:24:54,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:24:54,280 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:24:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:24:54,281 INFO L82 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2020-12-23 01:24:54,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:24:54,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080872919] [2020-12-23 01:24:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:24:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:24:54,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:24:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:24:54,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:24:54,472 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 01:24:54,473 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 01:24:54,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:24:54,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:24:54 BoogieIcfgContainer [2020-12-23 01:24:54,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:24:54,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:24:54,529 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:24:54,529 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:24:54,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:24:53" (3/4) ... [2020-12-23 01:24:54,532 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 01:24:54,642 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-fpi/ms5f.c-witness.graphml [2020-12-23 01:24:54,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:24:54,648 INFO L168 Benchmark]: Toolchain (without parser) took 1878.39 ms. Allocated memory is still 160.4 MB. Free memory was 136.2 MB in the beginning and 138.1 MB in the end (delta: -2.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:24:54,649 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:24:54,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.32 ms. Allocated memory is still 160.4 MB. Free memory was 136.0 MB in the beginning and 125.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:24:54,651 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.96 ms. Allocated memory is still 160.4 MB. Free memory was 125.9 MB in the beginning and 124.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:24:54,655 INFO L168 Benchmark]: Boogie Preprocessor took 32.44 ms. Allocated memory is still 160.4 MB. Free memory was 124.4 MB in the beginning and 123.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:24:54,657 INFO L168 Benchmark]: RCFGBuilder took 458.24 ms. Allocated memory is still 160.4 MB. Free memory was 123.0 MB in the beginning and 136.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2020-12-23 01:24:54,658 INFO L168 Benchmark]: TraceAbstraction took 936.49 ms. Allocated memory is still 160.4 MB. Free memory was 135.8 MB in the beginning and 140.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 35.3 MB. Max. memory is 8.0 GB. [2020-12-23 01:24:54,664 INFO L168 Benchmark]: Witness Printer took 114.33 ms. Allocated memory is still 160.4 MB. Free memory was 140.7 MB in the beginning and 138.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:24:54,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.32 ms. Allocated memory is still 160.4 MB. Free memory was 136.0 MB in the beginning and 125.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.96 ms. Allocated memory is still 160.4 MB. Free memory was 125.9 MB in the beginning and 124.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.44 ms. Allocated memory is still 160.4 MB. Free memory was 124.4 MB in the beginning and 123.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 458.24 ms. Allocated memory is still 160.4 MB. Free memory was 123.0 MB in the beginning and 136.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 936.49 ms. Allocated memory is still 160.4 MB. Free memory was 135.8 MB in the beginning and 140.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 35.3 MB. Max. memory is 8.0 GB. * Witness Printer took 114.33 ms. Allocated memory is still 160.4 MB. Free memory was 140.7 MB in the beginning and 138.1 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 sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=1] [L31] COND TRUE i