/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-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-22 23:48:24,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 23:48:24,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 23:48:24,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 23:48:24,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 23:48:24,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 23:48:24,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 23:48:24,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 23:48:25,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 23:48:25,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 23:48:25,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 23:48:25,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 23:48:25,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 23:48:25,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 23:48:25,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 23:48:25,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 23:48:25,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 23:48:25,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 23:48:25,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 23:48:25,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 23:48:25,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 23:48:25,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 23:48:25,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 23:48:25,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 23:48:25,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 23:48:25,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 23:48:25,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 23:48:25,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 23:48:25,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 23:48:25,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 23:48:25,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 23:48:25,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 23:48:25,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 23:48:25,145 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 23:48:25,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 23:48:25,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 23:48:25,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 23:48:25,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 23:48:25,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 23:48:25,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 23:48:25,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 23:48:25,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 23:48:25,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 23:48:25,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 23:48:25,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 23:48:25,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 23:48:25,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 23:48:25,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 23:48:25,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 23:48:25,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 23:48:25,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 23:48:25,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 23:48:25,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 23:48:25,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 23:48:25,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 23:48:25,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 23:48:25,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 23:48:25,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 23:48:25,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 23:48:25,628 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 23:48:25,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2020-12-22 23:48:25,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b67d286d5/e3e48bae2e5448d088e82d13f01ea68b/FLAG37e7131a2 [2020-12-22 23:48:26,398 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 23:48:26,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2020-12-22 23:48:26,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b67d286d5/e3e48bae2e5448d088e82d13f01ea68b/FLAG37e7131a2 [2020-12-22 23:48:26,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b67d286d5/e3e48bae2e5448d088e82d13f01ea68b [2020-12-22 23:48:26,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 23:48:26,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 23:48:26,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 23:48:26,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 23:48:26,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 23:48:26,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:48:26" (1/1) ... [2020-12-22 23:48:26,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380284a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:26, skipping insertion in model container [2020-12-22 23:48:26,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:48:26" (1/1) ... [2020-12-22 23:48:26,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 23:48:26,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 23:48:26,944 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-examples/sanfoundry_24-1.i[848,861] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-22 23:48:26,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 23:48:26,976 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 23:48:26,992 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-examples/sanfoundry_24-1.i[848,861] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~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: VariableLHS[~i~0,] [2020-12-22 23:48:27,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 23:48:27,024 INFO L208 MainTranslator]: Completed translation [2020-12-22 23:48:27,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27 WrapperNode [2020-12-22 23:48:27,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 23:48:27,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 23:48:27,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 23:48:27,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 23:48:27,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (1/1) ... [2020-12-22 23:48:27,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (1/1) ... [2020-12-22 23:48:27,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 23:48:27,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 23:48:27,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 23:48:27,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 23:48:27,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (1/1) ... [2020-12-22 23:48:27,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (1/1) ... [2020-12-22 23:48:27,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (1/1) ... [2020-12-22 23:48:27,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (1/1) ... [2020-12-22 23:48:27,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (1/1) ... [2020-12-22 23:48:27,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (1/1) ... [2020-12-22 23:48:27,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (1/1) ... [2020-12-22 23:48:27,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 23:48:27,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 23:48:27,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 23:48:27,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 23:48:27,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (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 [2020-12-22 23:48:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 23:48:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 23:48:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 23:48:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 23:48:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 23:48:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 23:48:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 23:48:27,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 23:48:27,744 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-22 23:48:27,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:48:27 BoogieIcfgContainer [2020-12-22 23:48:27,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 23:48:27,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 23:48:27,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 23:48:27,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 23:48:27,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:48:26" (1/3) ... [2020-12-22 23:48:27,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42647fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:48:27, skipping insertion in model container [2020-12-22 23:48:27,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:48:27" (2/3) ... [2020-12-22 23:48:27,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42647fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:48:27, skipping insertion in model container [2020-12-22 23:48:27,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:48:27" (3/3) ... [2020-12-22 23:48:27,771 INFO L111 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2020-12-22 23:48:27,787 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 23:48:27,793 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 23:48:27,815 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 23:48:27,921 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 23:48:27,922 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 23:48:27,922 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 23:48:27,922 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 23:48:27,926 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 23:48:27,926 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 23:48:27,926 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 23:48:27,926 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 23:48:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-22 23:48:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 23:48:27,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 23:48:27,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 23:48:27,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 23:48:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 23:48:27,974 INFO L82 PathProgramCache]: Analyzing trace with hash 212104336, now seen corresponding path program 1 times [2020-12-22 23:48:27,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 23:48:27,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91093702] [2020-12-22 23:48:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 23:48:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 23:48:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 23:48:28,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91093702] [2020-12-22 23:48:28,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 23:48:28,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 23:48:28,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016277751] [2020-12-22 23:48:28,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 23:48:28,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 23:48:28,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 23:48:28,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 23:48:28,263 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-12-22 23:48:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 23:48:28,391 INFO L93 Difference]: Finished difference Result 68 states and 97 transitions. [2020-12-22 23:48:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 23:48:28,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-22 23:48:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 23:48:28,404 INFO L225 Difference]: With dead ends: 68 [2020-12-22 23:48:28,404 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 23:48:28,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 23:48:28,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 23:48:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2020-12-22 23:48:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 23:48:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-12-22 23:48:28,450 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2020-12-22 23:48:28,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 23:48:28,450 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-12-22 23:48:28,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 23:48:28,450 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-12-22 23:48:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 23:48:28,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 23:48:28,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 23:48:28,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 23:48:28,452 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 23:48:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 23:48:28,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1436002194, now seen corresponding path program 1 times [2020-12-22 23:48:28,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 23:48:28,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376683788] [2020-12-22 23:48:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 23:48:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 23:48:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 23:48:28,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376683788] [2020-12-22 23:48:28,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 23:48:28,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 23:48:28,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6130299] [2020-12-22 23:48:28,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 23:48:28,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 23:48:28,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 23:48:28,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 23:48:28,647 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2020-12-22 23:48:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 23:48:28,740 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-12-22 23:48:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 23:48:28,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 23:48:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 23:48:28,742 INFO L225 Difference]: With dead ends: 29 [2020-12-22 23:48:28,742 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 23:48:28,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 23:48:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 23:48:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2020-12-22 23:48:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 23:48:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-12-22 23:48:28,748 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2020-12-22 23:48:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 23:48:28,748 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-12-22 23:48:28,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 23:48:28,749 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-12-22 23:48:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 23:48:28,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 23:48:28,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 23:48:28,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 23:48:28,750 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 23:48:28,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 23:48:28,751 INFO L82 PathProgramCache]: Analyzing trace with hash 906460810, now seen corresponding path program 1 times [2020-12-22 23:48:28,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 23:48:28,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557606420] [2020-12-22 23:48:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 23:48:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 23:48:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 23:48:28,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557606420] [2020-12-22 23:48:28,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 23:48:28,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 23:48:28,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531493325] [2020-12-22 23:48:28,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 23:48:28,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 23:48:28,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 23:48:28,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 23:48:28,852 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 4 states. [2020-12-22 23:48:28,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 23:48:28,921 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2020-12-22 23:48:28,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 23:48:28,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-22 23:48:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 23:48:28,922 INFO L225 Difference]: With dead ends: 27 [2020-12-22 23:48:28,923 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 23:48:28,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 23:48:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 23:48:28,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 23:48:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 23:48:28,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 23:48:28,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-22 23:48:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 23:48:28,925 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 23:48:28,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 23:48:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 23:48:28,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 23:48:28,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 23:48:28,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 23:48:28,943 INFO L189 CegarLoopUtils]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2020-12-22 23:48:28,943 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 23:48:28,943 INFO L192 CegarLoopUtils]: At program point L27-3(lines 27 30) the Hoare annotation is: true [2020-12-22 23:48:28,943 INFO L189 CegarLoopUtils]: For program point L27-4(lines 27 30) no Hoare annotation was computed. [2020-12-22 23:48:28,944 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 23:48:28,944 INFO L189 CegarLoopUtils]: For program point L32-2(lines 32 38) no Hoare annotation was computed. [2020-12-22 23:48:28,944 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 23:48:28,944 INFO L192 CegarLoopUtils]: At program point L32-3(lines 32 38) the Hoare annotation is: true [2020-12-22 23:48:28,944 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 23:48:28,944 INFO L189 CegarLoopUtils]: For program point L32-4(lines 32 38) no Hoare annotation was computed. [2020-12-22 23:48:28,945 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 23:48:28,945 INFO L189 CegarLoopUtils]: For program point L41(lines 41 44) no Hoare annotation was computed. [2020-12-22 23:48:28,945 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 23:48:28,945 INFO L192 CegarLoopUtils]: At program point L46(lines 21 47) the Hoare annotation is: true [2020-12-22 23:48:28,945 INFO L189 CegarLoopUtils]: For program point L34(lines 34 37) no Hoare annotation was computed. [2020-12-22 23:48:28,946 INFO L189 CegarLoopUtils]: For program point L14(line 14) no Hoare annotation was computed. [2020-12-22 23:48:28,946 INFO L189 CegarLoopUtils]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-12-22 23:48:28,946 INFO L189 CegarLoopUtils]: For program point L14-3(lines 1 47) no Hoare annotation was computed. [2020-12-22 23:48:28,946 INFO L189 CegarLoopUtils]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-12-22 23:48:28,946 INFO L189 CegarLoopUtils]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-12-22 23:48:28,946 INFO L189 CegarLoopUtils]: For program point L14-7(lines 1 47) no Hoare annotation was computed. [2020-12-22 23:48:28,947 INFO L189 CegarLoopUtils]: For program point L39-2(lines 39 45) no Hoare annotation was computed. [2020-12-22 23:48:28,947 INFO L192 CegarLoopUtils]: At program point L39-3(lines 39 45) the Hoare annotation is: true [2020-12-22 23:48:28,947 INFO L189 CegarLoopUtils]: For program point L39-4(lines 39 45) no Hoare annotation was computed. [2020-12-22 23:48:28,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:48:28 BoogieIcfgContainer [2020-12-22 23:48:28,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 23:48:28,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 23:48:28,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 23:48:28,960 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 23:48:28,960 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:48:27" (3/4) ... [2020-12-22 23:48:28,964 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 23:48:28,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-22 23:48:28,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 23:48:28,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 23:48:28,979 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 23:48:29,033 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-examples/sanfoundry_24-1.i-witness.graphml [2020-12-22 23:48:29,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 23:48:29,036 INFO L168 Benchmark]: Toolchain (without parser) took 2300.49 ms. Allocated memory is still 178.3 MB. Free memory was 153.8 MB in the beginning and 99.0 MB in the end (delta: 54.8 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2020-12-22 23:48:29,036 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 178.3 MB. Free memory is still 153.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 23:48:29,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.83 ms. Allocated memory is still 178.3 MB. Free memory was 153.6 MB in the beginning and 143.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 23:48:29,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.46 ms. Allocated memory is still 178.3 MB. Free memory was 143.8 MB in the beginning and 142.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 23:48:29,038 INFO L168 Benchmark]: Boogie Preprocessor took 30.78 ms. Allocated memory is still 178.3 MB. Free memory was 142.1 MB in the beginning and 141.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 23:48:29,039 INFO L168 Benchmark]: RCFGBuilder took 645.88 ms. Allocated memory is still 178.3 MB. Free memory was 140.8 MB in the beginning and 125.9 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-22 23:48:29,040 INFO L168 Benchmark]: TraceAbstraction took 1206.55 ms. Allocated memory is still 178.3 MB. Free memory was 125.5 MB in the beginning and 102.2 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 23:48:29,041 INFO L168 Benchmark]: Witness Printer took 74.45 ms. Allocated memory is still 178.3 MB. Free memory was 102.2 MB in the beginning and 99.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 23:48:29,044 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 178.3 MB. Free memory is still 153.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.83 ms. Allocated memory is still 178.3 MB. Free memory was 153.6 MB in the beginning and 143.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.46 ms. Allocated memory is still 178.3 MB. Free memory was 143.8 MB in the beginning and 142.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.78 ms. Allocated memory is still 178.3 MB. Free memory was 142.1 MB in the beginning and 141.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 645.88 ms. Allocated memory is still 178.3 MB. Free memory was 140.8 MB in the beginning and 125.9 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1206.55 ms. Allocated memory is still 178.3 MB. Free memory was 125.5 MB in the beginning and 102.2 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Witness Printer took 74.45 ms. Allocated memory is still 178.3 MB. Free memory was 102.2 MB in the beginning and 99.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 55 SDslu, 69 SDs, 0 SdLazy, 97 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 776 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...