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/recursive-simple/afterrec-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 06:12:55,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 06:12:55,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 06:12:55,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 06:12:55,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 06:12:55,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 06:12:55,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 06:12:55,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 06:12:55,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 06:12:55,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 06:12:55,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 06:12:55,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 06:12:55,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 06:12:55,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 06:12:55,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 06:12:55,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 06:12:55,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 06:12:55,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 06:12:55,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 06:12:55,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 06:12:55,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 06:12:55,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 06:12:55,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 06:12:55,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 06:12:55,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 06:12:55,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 06:12:55,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 06:12:55,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 06:12:55,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 06:12:55,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 06:12:55,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 06:12:55,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 06:12:55,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 06:12:55,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 06:12:55,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 06:12:55,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 06:12:55,948 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 [2019-09-08 06:12:55,962 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 06:12:55,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 06:12:55,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 06:12:55,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 06:12:55,964 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 06:12:55,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 06:12:55,965 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 06:12:55,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 06:12:55,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 06:12:55,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 06:12:55,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 06:12:55,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 06:12:55,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 06:12:55,966 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 06:12:55,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 06:12:55,966 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 06:12:55,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 06:12:55,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 06:12:55,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 06:12:55,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 06:12:55,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 06:12:55,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:12:55,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 06:12:55,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 06:12:55,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 06:12:55,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 06:12:55,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 06:12:55,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 06:12:55,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 06:12:56,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 06:12:56,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 06:12:56,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 06:12:56,018 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 06:12:56,018 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 06:12:56,019 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec-2.c [2019-09-08 06:12:56,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86265f4ad/4f58ef0b0126407792d5a7441783abe9/FLAGef7ba8438 [2019-09-08 06:12:56,517 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 06:12:56,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-2.c [2019-09-08 06:12:56,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86265f4ad/4f58ef0b0126407792d5a7441783abe9/FLAGef7ba8438 [2019-09-08 06:12:56,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86265f4ad/4f58ef0b0126407792d5a7441783abe9 [2019-09-08 06:12:56,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 06:12:56,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 06:12:56,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 06:12:56,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 06:12:56,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 06:12:56,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:12:56" (1/1) ... [2019-09-08 06:12:56,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc4d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:56, skipping insertion in model container [2019-09-08 06:12:56,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:12:56" (1/1) ... [2019-09-08 06:12:56,965 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 06:12:56,982 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 06:12:57,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:12:57,165 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 06:12:57,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:12:57,195 INFO L192 MainTranslator]: Completed translation [2019-09-08 06:12:57,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57 WrapperNode [2019-09-08 06:12:57,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 06:12:57,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 06:12:57,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 06:12:57,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 06:12:57,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57" (1/1) ... [2019-09-08 06:12:57,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57" (1/1) ... [2019-09-08 06:12:57,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57" (1/1) ... [2019-09-08 06:12:57,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57" (1/1) ... [2019-09-08 06:12:57,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57" (1/1) ... [2019-09-08 06:12:57,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57" (1/1) ... [2019-09-08 06:12:57,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57" (1/1) ... [2019-09-08 06:12:57,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 06:12:57,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 06:12:57,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 06:12:57,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 06:12:57,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57" (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 [2019-09-08 06:12:57,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 06:12:57,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 06:12:57,362 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-08 06:12:57,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 06:12:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 06:12:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-08 06:12:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 06:12:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 06:12:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 06:12:57,517 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 06:12:57,518 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 06:12:57,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:12:57 BoogieIcfgContainer [2019-09-08 06:12:57,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 06:12:57,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 06:12:57,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 06:12:57,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 06:12:57,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:12:56" (1/3) ... [2019-09-08 06:12:57,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3691aa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:12:57, skipping insertion in model container [2019-09-08 06:12:57,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:57" (2/3) ... [2019-09-08 06:12:57,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3691aa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:12:57, skipping insertion in model container [2019-09-08 06:12:57,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:12:57" (3/3) ... [2019-09-08 06:12:57,533 INFO L109 eAbstractionObserver]: Analyzing ICFG afterrec-2.c [2019-09-08 06:12:57,544 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 06:12:57,556 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 06:12:57,573 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 06:12:57,600 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 06:12:57,601 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 06:12:57,601 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 06:12:57,601 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 06:12:57,601 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 06:12:57,602 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 06:12:57,602 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 06:12:57,602 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 06:12:57,602 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 06:12:57,619 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-09-08 06:12:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 06:12:57,624 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:57,625 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:57,627 INFO L418 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:57,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1715138264, now seen corresponding path program 1 times [2019-09-08 06:12:57,633 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:57,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:57,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:57,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:57,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 06:12:57,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:57,804 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:12:57,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:57,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-08 06:12:57,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 06:12:57,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:12:57,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2019-09-08 06:12:57,924 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 06:12:57,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 06:12:57,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:12:57,942 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2019-09-08 06:12:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:57,994 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-09-08 06:12:57,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 06:12:57,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-09-08 06:12:57,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:58,003 INFO L225 Difference]: With dead ends: 24 [2019-09-08 06:12:58,003 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 06:12:58,007 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:12:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 06:12:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 06:12:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 06:12:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 06:12:58,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-08 06:12:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:58,036 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 06:12:58,036 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 06:12:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 06:12:58,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 06:12:58,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 06:12:58,077 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 06:12:58,077 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:12:58,077 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-08 06:12:58,077 INFO L439 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: (not (<= |f_#in~n| 2)) [2019-09-08 06:12:58,078 INFO L446 ceAbstractionStarter]: At program point fENTRY(lines 3 8) the Hoare annotation is: true [2019-09-08 06:12:58,078 INFO L443 ceAbstractionStarter]: For program point L6-1(lines 3 8) no Hoare annotation was computed. [2019-09-08 06:12:58,078 INFO L443 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-09-08 06:12:58,078 INFO L443 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2019-09-08 06:12:58,078 INFO L443 ceAbstractionStarter]: For program point fFINAL(lines 3 8) no Hoare annotation was computed. [2019-09-08 06:12:58,079 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:12:58,079 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 06:12:58,079 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 06:12:58,079 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 06:12:58,079 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 12) the Hoare annotation is: true [2019-09-08 06:12:58,080 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 12) no Hoare annotation was computed. [2019-09-08 06:12:58,080 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 12) no Hoare annotation was computed. [2019-09-08 06:12:58,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 06:12:58 BoogieIcfgContainer [2019-09-08 06:12:58,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 06:12:58,086 INFO L168 Benchmark]: Toolchain (without parser) took 1139.66 ms. Allocated memory was 141.0 MB in the beginning and 200.3 MB in the end (delta: 59.2 MB). Free memory was 88.8 MB in the beginning and 139.2 MB in the end (delta: -50.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:58,087 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 06:12:58,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.91 ms. Allocated memory is still 141.0 MB. Free memory was 88.6 MB in the beginning and 80.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:58,091 INFO L168 Benchmark]: Boogie Preprocessor took 115.51 ms. Allocated memory was 141.0 MB in the beginning and 200.3 MB in the end (delta: 59.2 MB). Free memory was 80.0 MB in the beginning and 178.9 MB in the end (delta: -98.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:58,092 INFO L168 Benchmark]: RCFGBuilder took 207.48 ms. Allocated memory is still 200.3 MB. Free memory was 178.9 MB in the beginning and 168.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:58,093 INFO L168 Benchmark]: TraceAbstraction took 561.51 ms. Allocated memory is still 200.3 MB. Free memory was 168.6 MB in the beginning and 139.2 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:58,097 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.91 ms. Allocated memory is still 141.0 MB. Free memory was 88.6 MB in the beginning and 80.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.51 ms. Allocated memory was 141.0 MB in the beginning and 200.3 MB in the end (delta: 59.2 MB). Free memory was 80.0 MB in the beginning and 178.9 MB in the end (delta: -98.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 207.48 ms. Allocated memory is still 200.3 MB. Free memory was 178.9 MB in the beginning and 168.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 561.51 ms. Allocated memory is still 200.3 MB. Free memory was 168.6 MB in the beginning and 139.2 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 3 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 5 SDslu, 15 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 9 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 570 SizeOfPredicates, 1 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 10/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...