/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 11:17:06,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 11:17:06,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 11:17:06,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 11:17:06,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 11:17:06,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 11:17:06,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 11:17:06,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 11:17:06,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 11:17:06,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 11:17:06,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 11:17:06,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 11:17:06,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 11:17:06,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 11:17:06,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 11:17:06,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 11:17:06,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 11:17:06,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 11:17:06,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 11:17:06,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 11:17:06,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 11:17:06,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 11:17:06,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 11:17:06,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 11:17:06,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 11:17:06,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 11:17:06,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 11:17:06,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 11:17:06,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 11:17:06,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 11:17:06,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 11:17:06,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 11:17:06,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 11:17:06,684 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 11:17:06,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 11:17:06,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 11:17:06,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 11:17:06,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 11:17:06,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 11:17:06,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 11:17:06,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 11:17:06,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 11:17:06,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 11:17:06,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 11:17:06,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 11:17:06,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 11:17:06,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:17:06,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 11:17:06,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 11:17:06,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 11:17:06,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 11:17:06,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 11:17:06,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 11:17:06,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 11:17:06,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 11:17:07,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 11:17:07,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 11:17:07,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 11:17:07,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 11:17:07,115 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 11:17:07,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms1f.c [2021-01-06 11:17:07,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ddef6cefe/0d087a986e1d429cb30673ec9ffed0a9/FLAG60a49529d [2021-01-06 11:17:07,886 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 11:17:07,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/ms1f.c [2021-01-06 11:17:07,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ddef6cefe/0d087a986e1d429cb30673ec9ffed0a9/FLAG60a49529d [2021-01-06 11:17:08,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ddef6cefe/0d087a986e1d429cb30673ec9ffed0a9 [2021-01-06 11:17:08,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 11:17:08,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 11:17:08,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 11:17:08,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 11:17:08,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 11:17:08,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c26e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08, skipping insertion in model container [2021-01-06 11:17:08,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 11:17:08,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 11:17:08,508 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/ms1f.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]]] [2021-01-06 11:17:08,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:17:08,548 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 11:17:08,561 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/ms1f.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]]] [2021-01-06 11:17:08,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:17:08,586 INFO L208 MainTranslator]: Completed translation [2021-01-06 11:17:08,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08 WrapperNode [2021-01-06 11:17:08,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 11:17:08,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 11:17:08,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 11:17:08,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 11:17:08,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 11:17:08,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 11:17:08,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 11:17:08,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 11:17:08,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (1/1) ... [2021-01-06 11:17:08,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 11:17:08,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 11:17:08,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 11:17:08,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 11:17:08,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (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 [2021-01-06 11:17:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 11:17:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 11:17:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 11:17:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 11:17:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 11:17:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 11:17:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 11:17:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 11:17:09,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 11:17:09,074 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-06 11:17:09,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:17:09 BoogieIcfgContainer [2021-01-06 11:17:09,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 11:17:09,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 11:17:09,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 11:17:09,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 11:17:09,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:17:08" (1/3) ... [2021-01-06 11:17:09,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a08cce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:17:09, skipping insertion in model container [2021-01-06 11:17:09,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:17:08" (2/3) ... [2021-01-06 11:17:09,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a08cce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:17:09, skipping insertion in model container [2021-01-06 11:17:09,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:17:09" (3/3) ... [2021-01-06 11:17:09,085 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1f.c [2021-01-06 11:17:09,092 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 11:17:09,098 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 11:17:09,152 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 11:17:09,182 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 11:17:09,183 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 11:17:09,183 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 11:17:09,183 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 11:17:09,183 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 11:17:09,183 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 11:17:09,184 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 11:17:09,184 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 11:17:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-01-06 11:17:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 11:17:09,204 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:17:09,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:17:09,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:17:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:17:09,213 INFO L82 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2021-01-06 11:17:09,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:17:09,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096104774] [2021-01-06 11:17:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:17:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:17:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:17:09,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096104774] [2021-01-06 11:17:09,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:17:09,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 11:17:09,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119390441] [2021-01-06 11:17:09,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 11:17:09,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:17:09,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 11:17:09,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 11:17:09,418 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2021-01-06 11:17:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:17:09,435 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-01-06 11:17:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 11:17:09,437 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 11:17:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:17:09,451 INFO L225 Difference]: With dead ends: 34 [2021-01-06 11:17:09,451 INFO L226 Difference]: Without dead ends: 15 [2021-01-06 11:17:09,457 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 [2021-01-06 11:17:09,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-06 11:17:09,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-01-06 11:17:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 11:17:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-01-06 11:17:09,499 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-01-06 11:17:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:17:09,500 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-01-06 11:17:09,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 11:17:09,501 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-01-06 11:17:09,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 11:17:09,502 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:17:09,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:17:09,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 11:17:09,504 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:17:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:17:09,509 INFO L82 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2021-01-06 11:17:09,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:17:09,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378012957] [2021-01-06 11:17:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:17:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:17:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:17:09,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378012957] [2021-01-06 11:17:09,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:17:09,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 11:17:09,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013225775] [2021-01-06 11:17:09,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 11:17:09,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:17:09,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 11:17:09,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 11:17:09,644 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2021-01-06 11:17:09,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:17:09,720 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-01-06 11:17:09,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 11:17:09,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 11:17:09,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:17:09,722 INFO L225 Difference]: With dead ends: 28 [2021-01-06 11:17:09,722 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 11:17:09,723 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 [2021-01-06 11:17:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 11:17:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-01-06 11:17:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-01-06 11:17:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-01-06 11:17:09,729 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2021-01-06 11:17:09,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:17:09,729 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-01-06 11:17:09,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 11:17:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-01-06 11:17:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 11:17:09,730 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:17:09,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:17:09,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 11:17:09,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:17:09,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:17:09,732 INFO L82 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2021-01-06 11:17:09,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:17:09,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676595777] [2021-01-06 11:17:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:17:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 11:17:09,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 11:17:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 11:17:09,855 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 11:17:09,907 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 11:17:09,907 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 11:17:09,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 11:17:09,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:17:09 BoogieIcfgContainer [2021-01-06 11:17:09,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 11:17:09,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 11:17:09,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 11:17:09,945 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 11:17:09,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:17:09" (3/4) ... [2021-01-06 11:17:09,948 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 11:17:09,999 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-fpi/ms1f.c-witness.graphml [2021-01-06 11:17:10,000 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 11:17:10,001 INFO L168 Benchmark]: Toolchain (without parser) took 1712.31 ms. Allocated memory is still 165.7 MB. Free memory was 140.4 MB in the beginning and 112.9 MB in the end (delta: 27.5 MB). Peak memory consumption was 28.8 MB. Max. memory is 8.0 GB. [2021-01-06 11:17:10,002 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 137.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 11:17:10,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.67 ms. Allocated memory is still 165.7 MB. Free memory was 140.3 MB in the beginning and 130.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 11:17:10,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.61 ms. Allocated memory is still 165.7 MB. Free memory was 130.2 MB in the beginning and 128.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 11:17:10,004 INFO L168 Benchmark]: Boogie Preprocessor took 28.10 ms. Allocated memory is still 165.7 MB. Free memory was 128.6 MB in the beginning and 127.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 11:17:10,005 INFO L168 Benchmark]: RCFGBuilder took 419.83 ms. Allocated memory is still 165.7 MB. Free memory was 127.4 MB in the beginning and 112.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 11:17:10,006 INFO L168 Benchmark]: TraceAbstraction took 866.24 ms. Allocated memory is still 165.7 MB. Free memory was 112.4 MB in the beginning and 115.0 MB in the end (delta: -2.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 11:17:10,006 INFO L168 Benchmark]: Witness Printer took 54.96 ms. Allocated memory is still 165.7 MB. Free memory was 115.0 MB in the beginning and 112.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 11:17:10,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 137.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.67 ms. Allocated memory is still 165.7 MB. Free memory was 140.3 MB in the beginning and 130.2 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 39.61 ms. Allocated memory is still 165.7 MB. Free memory was 130.2 MB in the beginning and 128.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.10 ms. Allocated memory is still 165.7 MB. Free memory was 128.6 MB in the beginning and 127.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 419.83 ms. Allocated memory is still 165.7 MB. Free memory was 127.4 MB in the beginning and 112.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 866.24 ms. Allocated memory is still 165.7 MB. Free memory was 112.4 MB in the beginning and 115.0 MB in the end (delta: -2.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 54.96 ms. Allocated memory is still 165.7 MB. Free memory was 115.0 MB in the beginning and 112.9 MB in the end (delta: 2.1 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=1] [L31] COND TRUE i