java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:59:06,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:59:06,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:59:06,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:59:06,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:59:06,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:59:06,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:59:06,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:59:06,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:59:06,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:59:06,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:59:06,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:59:06,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:59:06,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:59:06,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:59:06,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:59:06,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:59:06,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:59:06,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:59:06,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:59:06,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:59:06,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:59:06,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:59:06,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:59:06,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 12:59:06,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 12:59:06,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 12:59:06,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 12:59:07,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 12:59:07,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 12:59:07,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 12:59:07,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 12:59:07,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 12:59:07,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 12:59:07,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 12:59:07,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 12:59:07,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 12:59:07,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 12:59:07,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:59:07,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:59:07,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:59:07,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 12:59:07,038 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:59:07,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:59:07,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:59:07,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:59:07,041 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:59:07,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:59:07,041 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:59:07,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:59:07,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:59:07,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:59:07,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:59:07,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:59:07,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:59:07,044 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:59:07,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:59:07,044 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:59:07,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:59:07,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:59:07,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:59:07,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:59:07,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:59:07,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:59:07,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:59:07,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:59:07,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:59:07,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:59:07,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:59:07,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:59:07,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:59:07,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:59:07,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:59:07,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:59:07,099 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:59:07,100 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:59:07,100 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2019-09-20 12:59:07,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb341ae8/4ead1f48939d4faf814eedf1fd5d6852/FLAGc06af0ca0 [2019-09-20 12:59:07,621 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:59:07,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2019-09-20 12:59:07,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb341ae8/4ead1f48939d4faf814eedf1fd5d6852/FLAGc06af0ca0 [2019-09-20 12:59:07,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb341ae8/4ead1f48939d4faf814eedf1fd5d6852 [2019-09-20 12:59:08,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:59:08,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:59:08,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:59:08,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:59:08,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:59:08,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:59:07" (1/1) ... [2019-09-20 12:59:08,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cabe9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08, skipping insertion in model container [2019-09-20 12:59:08,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:59:07" (1/1) ... [2019-09-20 12:59:08,025 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:59:08,042 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:59:08,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:59:08,245 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:59:08,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:59:08,376 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:59:08,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08 WrapperNode [2019-09-20 12:59:08,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:59:08,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:59:08,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:59:08,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:59:08,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08" (1/1) ... [2019-09-20 12:59:08,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08" (1/1) ... [2019-09-20 12:59:08,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08" (1/1) ... [2019-09-20 12:59:08,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08" (1/1) ... [2019-09-20 12:59:08,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08" (1/1) ... [2019-09-20 12:59:08,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08" (1/1) ... [2019-09-20 12:59:08,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08" (1/1) ... [2019-09-20 12:59:08,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:59:08,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:59:08,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:59:08,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:59:08,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-20 12:59:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:59:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:59:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:59:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2019-09-20 12:59:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2019-09-20 12:59:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:59:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:59:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:59:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:59:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2019-09-20 12:59:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2019-09-20 12:59:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:59:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 12:59:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 12:59:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 12:59:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 12:59:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:59:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:59:08,773 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:59:08,773 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 12:59:08,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:59:08 BoogieIcfgContainer [2019-09-20 12:59:08,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:59:08,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:59:08,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:59:08,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:59:08,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:59:07" (1/3) ... [2019-09-20 12:59:08,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1c6b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:59:08, skipping insertion in model container [2019-09-20 12:59:08,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:08" (2/3) ... [2019-09-20 12:59:08,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1c6b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:59:08, skipping insertion in model container [2019-09-20 12:59:08,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:59:08" (3/3) ... [2019-09-20 12:59:08,788 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2019-09-20 12:59:08,799 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:59:08,806 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:59:08,840 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:59:08,868 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:59:08,869 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:59:08,869 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:59:08,869 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:59:08,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:59:08,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:59:08,869 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:59:08,870 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:59:08,870 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:59:08,886 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-09-20 12:59:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 12:59:08,891 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:08,892 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:08,894 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:08,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:08,900 INFO L82 PathProgramCache]: Analyzing trace with hash -762079996, now seen corresponding path program 1 times [2019-09-20 12:59:08,902 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:08,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:08,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:08,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:08,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:09,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:09,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:59:09,143 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:59:09,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:59:09,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:59:09,160 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2019-09-20 12:59:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:09,290 INFO L93 Difference]: Finished difference Result 89 states and 125 transitions. [2019-09-20 12:59:09,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 12:59:09,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-20 12:59:09,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:09,303 INFO L225 Difference]: With dead ends: 89 [2019-09-20 12:59:09,304 INFO L226 Difference]: Without dead ends: 46 [2019-09-20 12:59:09,308 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:59:09,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-20 12:59:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2019-09-20 12:59:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-20 12:59:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-09-20 12:59:09,356 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2019-09-20 12:59:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:09,357 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-09-20 12:59:09,357 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:59:09,357 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-09-20 12:59:09,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 12:59:09,359 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:09,359 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:09,359 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:09,360 INFO L82 PathProgramCache]: Analyzing trace with hash 204295910, now seen corresponding path program 1 times [2019-09-20 12:59:09,360 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:09,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:09,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:09,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:09,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 12:59:09,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:09,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 12:59:09,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 12:59:09,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 12:59:09,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 12:59:09,593 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 8 states. [2019-09-20 12:59:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:09,735 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-09-20 12:59:09,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 12:59:09,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-09-20 12:59:09,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:09,737 INFO L225 Difference]: With dead ends: 42 [2019-09-20 12:59:09,738 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 12:59:09,739 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-20 12:59:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 12:59:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-20 12:59:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 12:59:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-09-20 12:59:09,748 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 18 [2019-09-20 12:59:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:09,749 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-09-20 12:59:09,749 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 12:59:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-09-20 12:59:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-20 12:59:09,750 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:09,751 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:09,751 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:09,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1004823058, now seen corresponding path program 1 times [2019-09-20 12:59:09,752 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:09,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:09,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:09,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:09,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-20 12:59:10,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:10,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 12:59:10,034 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 12:59:10,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 12:59:10,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 12:59:10,034 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2019-09-20 12:59:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:10,169 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-09-20 12:59:10,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 12:59:10,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-09-20 12:59:10,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:10,171 INFO L225 Difference]: With dead ends: 40 [2019-09-20 12:59:10,171 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 12:59:10,172 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-20 12:59:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 12:59:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 12:59:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 12:59:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 12:59:10,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-20 12:59:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:10,175 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 12:59:10,175 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 12:59:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 12:59:10,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 12:59:10,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 12:59:10,242 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:59:10,243 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:59:10,243 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:59:10,243 INFO L446 ceAbstractionStarter]: At program point printOddENTRY(lines 7 9) the Hoare annotation is: true [2019-09-20 12:59:10,244 INFO L439 ceAbstractionStarter]: At program point L8(line 8) the Hoare annotation is: (or (not (= printOdd_~i (* 2 (div printOdd_~i 2)))) (not (let ((.cse0 (+ |printOdd_#in~i| 1))) (<= .cse0 (* 2 (div .cse0 2)))))) [2019-09-20 12:59:10,244 INFO L443 ceAbstractionStarter]: For program point printOddFINAL(lines 7 9) no Hoare annotation was computed. [2019-09-20 12:59:10,244 INFO L443 ceAbstractionStarter]: For program point printOddEXIT(lines 7 9) no Hoare annotation was computed. [2019-09-20 12:59:10,244 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:59:10,244 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 12:59:10,244 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:59:10,244 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:59:10,245 INFO L443 ceAbstractionStarter]: For program point printEvenEXIT(lines 4 6) no Hoare annotation was computed. [2019-09-20 12:59:10,245 INFO L446 ceAbstractionStarter]: At program point printEvenENTRY(lines 4 6) the Hoare annotation is: true [2019-09-20 12:59:10,245 INFO L443 ceAbstractionStarter]: For program point printEvenFINAL(lines 4 6) no Hoare annotation was computed. [2019-09-20 12:59:10,245 INFO L439 ceAbstractionStarter]: At program point L5(line 5) the Hoare annotation is: (or (not (<= |printEven_#in~i| (* 2 (div |printEven_#in~i| 2)))) (<= printEven_~i (* 2 (div printEven_~i 2)))) [2019-09-20 12:59:10,245 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 36) no Hoare annotation was computed. [2019-09-20 12:59:10,246 INFO L443 ceAbstractionStarter]: For program point L23(lines 23 26) no Hoare annotation was computed. [2019-09-20 12:59:10,246 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (let ((.cse0 (+ |main_#t~mem8| 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2019-09-20 12:59:10,246 INFO L443 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-09-20 12:59:10,246 INFO L443 ceAbstractionStarter]: For program point L28-2(lines 28 34) no Hoare annotation was computed. [2019-09-20 12:59:10,246 INFO L446 ceAbstractionStarter]: At program point L28-3(lines 28 34) the Hoare annotation is: true [2019-09-20 12:59:10,246 INFO L443 ceAbstractionStarter]: For program point L28-4(lines 28 34) no Hoare annotation was computed. [2019-09-20 12:59:10,247 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2019-09-20 12:59:10,247 INFO L446 ceAbstractionStarter]: At program point L16-3(lines 16 19) the Hoare annotation is: true [2019-09-20 12:59:10,247 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 16 19) no Hoare annotation was computed. [2019-09-20 12:59:10,247 INFO L439 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (<= |main_#t~mem5| (* 2 (div |main_#t~mem5| 2))) [2019-09-20 12:59:10,247 INFO L443 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-09-20 12:59:10,247 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2019-09-20 12:59:10,248 INFO L446 ceAbstractionStarter]: At program point L21-3(lines 21 27) the Hoare annotation is: true [2019-09-20 12:59:10,248 INFO L443 ceAbstractionStarter]: For program point L21-4(lines 21 27) no Hoare annotation was computed. [2019-09-20 12:59:10,248 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 36) no Hoare annotation was computed. [2019-09-20 12:59:10,248 INFO L443 ceAbstractionStarter]: For program point L30(lines 30 33) no Hoare annotation was computed. [2019-09-20 12:59:10,248 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 36) the Hoare annotation is: true [2019-09-20 12:59:10,248 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-09-20 12:59:10,249 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-09-20 12:59:10,249 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-09-20 12:59:10,249 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-09-20 12:59:10,249 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-09-20 12:59:10,249 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-09-20 12:59:10,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:59:10 BoogieIcfgContainer [2019-09-20 12:59:10,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:59:10,266 INFO L168 Benchmark]: Toolchain (without parser) took 2251.93 ms. Allocated memory was 133.7 MB in the beginning and 224.4 MB in the end (delta: 90.7 MB). Free memory was 86.5 MB in the beginning and 180.1 MB in the end (delta: -93.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 12:59:10,268 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 133.7 MB. Free memory was 105.4 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:59:10,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.62 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 86.3 MB in the beginning and 178.6 MB in the end (delta: -92.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:10,273 INFO L168 Benchmark]: Boogie Preprocessor took 45.53 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 176.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:10,273 INFO L168 Benchmark]: RCFGBuilder took 351.40 ms. Allocated memory is still 200.3 MB. Free memory was 176.3 MB in the beginning and 159.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:10,275 INFO L168 Benchmark]: TraceAbstraction took 1485.83 ms. Allocated memory was 200.3 MB in the beginning and 224.4 MB in the end (delta: 24.1 MB). Free memory was 159.3 MB in the beginning and 180.1 MB in the end (delta: -20.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:10,286 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 133.7 MB. Free memory was 105.4 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.62 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 86.3 MB in the beginning and 178.6 MB in the end (delta: -92.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.53 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 176.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.40 ms. Allocated memory is still 200.3 MB. Free memory was 176.3 MB in the beginning and 159.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1485.83 ms. Allocated memory was 200.3 MB in the beginning and 224.4 MB in the end (delta: 24.1 MB). Free memory was 159.3 MB in the beginning and 180.1 MB in the end (delta: -20.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 42 SDslu, 411 SDs, 0 SdLazy, 143 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 21 PreInvPairs, 29 NumberOfFragments, 65 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2672 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...