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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:43:19,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:43:19,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:43:19,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:43:19,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:43:19,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:43:19,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:43:19,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:43:19,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:43:19,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:43:19,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:43:19,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:43:19,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:43:19,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:43:19,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:43:19,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:43:19,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:43:19,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:43:19,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:43:19,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:43:19,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:43:19,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:43:19,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:43:19,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:43:19,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:43:19,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:43:19,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:43:19,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:43:19,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:43:19,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:43:19,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:43:19,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:43:19,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:43:19,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:43:19,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:43:19,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:43:19,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:43:19,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:43:19,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:43:19,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:43:19,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:43:19,247 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 [2019-10-07 13:43:19,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:43:19,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:43:19,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:43:19,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:43:19,285 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:43:19,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:43:19,286 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:43:19,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:43:19,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:43:19,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:43:19,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:43:19,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:43:19,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:43:19,287 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:43:19,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:43:19,287 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:43:19,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:43:19,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:43:19,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:43:19,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:43:19,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:43:19,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:43:19,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:43:19,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:43:19,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:43:19,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:43:19,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:43:19,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:43:19,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:43:19,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:43:19,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:43:19,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:43:19,565 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:43:19,566 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:43:19,566 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-10-07 13:43:19,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dc6c729c/f894eaf2ad0747a0b3f69bab50160d7c/FLAG020d33925 [2019-10-07 13:43:20,022 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:43:20,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-10-07 13:43:20,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dc6c729c/f894eaf2ad0747a0b3f69bab50160d7c/FLAG020d33925 [2019-10-07 13:43:20,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dc6c729c/f894eaf2ad0747a0b3f69bab50160d7c [2019-10-07 13:43:20,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:43:20,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:43:20,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:43:20,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:43:20,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:43:20,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:43:20" (1/1) ... [2019-10-07 13:43:20,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b83b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20, skipping insertion in model container [2019-10-07 13:43:20,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:43:20" (1/1) ... [2019-10-07 13:43:20,422 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:43:20,438 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:43:20,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:43:20,578 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:43:20,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:43:20,604 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:43:20,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20 WrapperNode [2019-10-07 13:43:20,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:43:20,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:43:20,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:43:20,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:43:20,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20" (1/1) ... [2019-10-07 13:43:20,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20" (1/1) ... [2019-10-07 13:43:20,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20" (1/1) ... [2019-10-07 13:43:20,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20" (1/1) ... [2019-10-07 13:43:20,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20" (1/1) ... [2019-10-07 13:43:20,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20" (1/1) ... [2019-10-07 13:43:20,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20" (1/1) ... [2019-10-07 13:43:20,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:43:20,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:43:20,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:43:20,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:43:20,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20" (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 [2019-10-07 13:43:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:43:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:43:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:43:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:43:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:43:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:43:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:43:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:43:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:43:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:43:20,956 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:43:20,957 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-07 13:43:20,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:43:20 BoogieIcfgContainer [2019-10-07 13:43:20,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:43:20,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:43:20,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:43:20,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:43:20,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:43:20" (1/3) ... [2019-10-07 13:43:20,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12544fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:43:20, skipping insertion in model container [2019-10-07 13:43:20,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:20" (2/3) ... [2019-10-07 13:43:20,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12544fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:43:20, skipping insertion in model container [2019-10-07 13:43:20,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:43:20" (3/3) ... [2019-10-07 13:43:20,982 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2019-10-07 13:43:20,995 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:43:21,004 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:43:21,034 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:43:21,067 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:43:21,067 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:43:21,068 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:43:21,068 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:43:21,068 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:43:21,068 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:43:21,068 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:43:21,068 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:43:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-07 13:43:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:43:21,088 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:43:21,088 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:43:21,090 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:43:21,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:43:21,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2057132807, now seen corresponding path program 1 times [2019-10-07 13:43:21,101 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:43:21,101 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:21,101 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:21,101 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:43:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:43:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:21,399 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:21,400 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:43:21,400 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 13:43:21,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:43:21,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:43:21,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:43:21,422 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-10-07 13:43:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:43:21,607 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2019-10-07 13:43:21,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:43:21,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-07 13:43:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:43:21,619 INFO L225 Difference]: With dead ends: 31 [2019-10-07 13:43:21,619 INFO L226 Difference]: Without dead ends: 13 [2019-10-07 13:43:21,623 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:43:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-07 13:43:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-07 13:43:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-07 13:43:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-07 13:43:21,654 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-07 13:43:21,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:43:21,655 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-07 13:43:21,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:43:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-07 13:43:21,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 13:43:21,656 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:43:21,656 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:43:21,658 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:43:21,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:43:21,659 INFO L82 PathProgramCache]: Analyzing trace with hash -655331726, now seen corresponding path program 1 times [2019-10-07 13:43:21,659 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:43:21,659 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:21,660 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:21,660 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:43:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:43:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:21,850 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:21,850 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:43:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:43:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:43:21,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-07 13:43:21,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:43:22,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:43:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:22,032 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:43:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:22,112 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:43:22,142 INFO L162 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-10-07 13:43:22,142 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:43:22,166 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:43:22,179 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:43:22,180 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:43:22,308 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 10 for LOIs [2019-10-07 13:43:22,740 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-07 13:43:22,748 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:43:22,748 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:43:22,748 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~__return_72~0) (<= 0 ~__return_main~0) (<= 0 ~__return_72~0) (= ~__return_main~0 0) (<= ~__return_72~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:43:22,749 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (<= |old(~__return_72~0)| 0) (<= 0 |old(~__return_72~0)|) (<= 0 ~__return_main~0) (<= 0 ~__return_72~0) (= |old(~__return_72~0)| 0) (= ~__return_main~0 0) (= |old(~__return_72~0)| ~__return_72~0) (<= ~__return_main~0 0) (<= ~__return_72~0 0)) [2019-10-07 13:43:22,749 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 110#(and (= 0 ~__return_72~0) (<= 0 ~__return_main~0) (<= 0 ~__return_72~0) (= ~__return_main~0 0) (<= ~__return_72~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:43:22,749 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:43:22,750 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 101#(and (<= 0 main_~main__x~0) (<= 0 main_~main__i~0) (<= main_~main__j~0 2147483647) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= 0 |old(~__return_72~0)|) (<= main_~main__x~0 2147483647) (<= 0 main_~__VERIFIER_assert__cond~0) (= (ite (= 0 main_~main__y~0) 1 0) main_~__tmp_1~0) (<= 0 ~__return_72~0) (<= main_~__tmp_1~0 0) (= |old(~__return_72~0)| 0) (<= 0 main_~__tmp_1~0) (<= 0 main_~main__j~0) (= main_~main__j~0 main_~main__i~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (= 0 main_~main__x~0) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= ~__return_72~0 0) (<= main_~main__i~0 2147483647) (<= |old(~__return_72~0)| 0) (= ~__return_main~0 0) (<= main_~main__x~0 0) (<= main_~main__y~0 2147483647)) [2019-10-07 13:43:22,750 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 105#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_72~0)| ~__return_72~0)) [2019-10-07 13:43:22,750 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 86#(and (<= 0 main_~main__x~0) (<= 0 main_~main__i~0) (<= main_~main__j~0 2147483647) (<= 0 ~__return_main~0) (= 0 main_~main__x~0) (<= ~__return_72~0 0) (<= main_~main__i~0 2147483647) (<= ~__return_main~0 0) (<= |old(~__return_72~0)| 0) (<= 0 |old(~__return_72~0)|) (<= main_~main__x~0 2147483647) (<= 0 ~__return_72~0) (= |old(~__return_72~0)| 0) (= ~__return_main~0 0) (<= 0 main_~main__j~0) (<= main_~main__x~0 0) (<= main_~main__y~0 2147483647)) [2019-10-07 13:43:22,751 INFO L193 IcfgInterpreter]: Reachable states at location L35 satisfy 81#(and (<= 0 main_~main__i~0) (<= main_~main__j~0 2147483647) (<= 0 ~__return_main~0) (<= ~__return_72~0 0) (<= main_~main__i~0 2147483647) (<= ~__return_main~0 0) (<= |old(~__return_72~0)| 0) (<= 0 |old(~__return_72~0)|) (<= main_~main__x~0 2147483647) (<= 0 ~__return_72~0) (= |old(~__return_72~0)| 0) (= ~__return_main~0 0) (<= 0 main_~main__j~0) (<= main_~main__y~0 2147483647)) [2019-10-07 13:43:22,751 INFO L193 IcfgInterpreter]: Reachable states at location L14 satisfy 38#(and (<= main_~main__j~0 2147483647) (<= 0 ~__return_main~0) (<= 0 (+ main_~main__j~0 2147483648)) (<= main_~main__i~0 2147483647) (<= ~__return_main~0 0) (<= ~__return_72~0 0) (<= |old(~__return_72~0)| 0) (<= 0 (+ main_~main__i~0 2147483648)) (<= 0 |old(~__return_72~0)|) (<= 0 ~__return_72~0) (= |old(~__return_72~0)| 0) (= ~__return_main~0 0) (= |old(~__return_72~0)| ~__return_72~0)) [2019-10-07 13:43:22,751 INFO L193 IcfgInterpreter]: Reachable states at location L46 satisfy 91#(and (<= 0 main_~main__x~0) (<= 0 main_~main__i~0) (<= main_~main__j~0 2147483647) (= main_~main__j~0 main_~main__i~0) (<= 0 ~__return_main~0) (= 0 main_~main__x~0) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= ~__return_72~0 0) (<= main_~main__i~0 2147483647) (<= ~__return_main~0 0) (<= |old(~__return_72~0)| 0) (<= main_~__VERIFIER_assert__cond~0 1) (<= 0 |old(~__return_72~0)|) (<= main_~__tmp_1~0 1) (<= main_~main__x~0 2147483647) (<= 0 main_~__VERIFIER_assert__cond~0) (= (ite (= 0 main_~main__y~0) 1 0) main_~__tmp_1~0) (<= 0 ~__return_72~0) (= |old(~__return_72~0)| 0) (= ~__return_main~0 0) (<= 0 main_~__tmp_1~0) (<= 0 main_~main__j~0) (<= main_~main__x~0 0) (<= main_~main__y~0 2147483647)) [2019-10-07 13:43:22,751 INFO L193 IcfgInterpreter]: Reachable states at location L20 satisfy 43#(and (<= 0 main_~main__i~0) (<= main_~main__j~0 2147483647) (<= 0 ~__return_main~0) (<= 0 (+ main_~main__j~0 2147483648)) (<= main_~main__i~0 2147483647) (<= ~__return_main~0 0) (<= ~__return_72~0 0) (<= |old(~__return_72~0)| 0) (<= 0 (+ main_~main__i~0 2147483648)) (<= 0 |old(~__return_72~0)|) (<= 0 ~__return_72~0) (= |old(~__return_72~0)| 0) (= ~__return_main~0 0) (= |old(~__return_72~0)| ~__return_72~0)) [2019-10-07 13:43:22,752 INFO L193 IcfgInterpreter]: Reachable states at location L48 satisfy 96#(and (<= 0 main_~main__x~0) (<= 0 main_~main__i~0) (<= main_~main__j~0 2147483647) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= 0 |old(~__return_72~0)|) (<= main_~main__x~0 2147483647) (<= 0 main_~__VERIFIER_assert__cond~0) (= (ite (= 0 main_~main__y~0) 1 0) main_~__tmp_1~0) (<= 0 ~__return_72~0) (<= main_~__tmp_1~0 0) (= |old(~__return_72~0)| 0) (<= 0 main_~__tmp_1~0) (<= 0 main_~main__j~0) (= main_~main__j~0 main_~main__i~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (= 0 main_~main__x~0) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= ~__return_72~0 0) (<= main_~main__i~0 2147483647) (<= |old(~__return_72~0)| 0) (= ~__return_main~0 0) (<= main_~main__x~0 0) (<= main_~main__y~0 2147483647)) [2019-10-07 13:43:23,222 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:43:23,222 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 9] total 20 [2019-10-07 13:43:23,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-07 13:43:23,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-07 13:43:23,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2019-10-07 13:43:23,226 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 20 states. [2019-10-07 13:43:24,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:43:24,314 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-10-07 13:43:24,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 13:43:24,315 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 12 [2019-10-07 13:43:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:43:24,315 INFO L225 Difference]: With dead ends: 21 [2019-10-07 13:43:24,315 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 13:43:24,317 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2019-10-07 13:43:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 13:43:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 13:43:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 13:43:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 13:43:24,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-07 13:43:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:43:24,318 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 13:43:24,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-07 13:43:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 13:43:24,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 13:43:24,524 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:43:24,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 13:43:24,632 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_72~0)| ~__return_72~0)) [2019-10-07 13:43:24,632 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:43:24,632 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:43:24,633 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 ~__return_72~0) (= ~__return_main~0 0) (<= ~__return_72~0 0)) [2019-10-07 13:43:24,633 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 13:43:24,633 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 13:43:24,633 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 65) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (= |old(~__return_72~0)| ~__return_72~0) (not (= |old(~__return_72~0)| 0))) [2019-10-07 13:43:24,633 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 65) no Hoare annotation was computed. [2019-10-07 13:43:24,634 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 63) no Hoare annotation was computed. [2019-10-07 13:43:24,634 INFO L443 ceAbstractionStarter]: For program point L48(line 48) no Hoare annotation was computed. [2019-10-07 13:43:24,634 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2019-10-07 13:43:24,634 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 64) no Hoare annotation was computed. [2019-10-07 13:43:24,634 INFO L443 ceAbstractionStarter]: For program point L46(lines 46 55) no Hoare annotation was computed. [2019-10-07 13:43:24,634 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 65) no Hoare annotation was computed. [2019-10-07 13:43:24,635 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 61) no Hoare annotation was computed. [2019-10-07 13:43:24,635 INFO L439 ceAbstractionStarter]: At program point L35(lines 25 63) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (and (<= 0 main_~main__i~0) (<= main_~main__j~0 2147483647) (<= main_~main__x~0 2147483647) (<= 0 main_~main__j~0) (<= main_~main__i~0 2147483647) (= |old(~__return_72~0)| ~__return_72~0) (<= main_~main__y~0 2147483647)) (not (= |old(~__return_72~0)| 0))) [2019-10-07 13:43:24,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:43:24 BoogieIcfgContainer [2019-10-07 13:43:24,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:43:24,664 INFO L168 Benchmark]: Toolchain (without parser) took 4252.21 ms. Allocated memory was 144.2 MB in the beginning and 241.7 MB in the end (delta: 97.5 MB). Free memory was 104.5 MB in the beginning and 113.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:24,665 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 13:43:24,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.88 ms. Allocated memory is still 144.2 MB. Free memory was 104.1 MB in the beginning and 94.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:24,672 INFO L168 Benchmark]: Boogie Preprocessor took 112.11 ms. Allocated memory was 144.2 MB in the beginning and 205.0 MB in the end (delta: 60.8 MB). Free memory was 94.6 MB in the beginning and 183.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:24,673 INFO L168 Benchmark]: RCFGBuilder took 241.23 ms. Allocated memory is still 205.0 MB. Free memory was 183.5 MB in the beginning and 170.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:24,675 INFO L168 Benchmark]: TraceAbstraction took 3691.75 ms. Allocated memory was 205.0 MB in the beginning and 241.7 MB in the end (delta: 36.7 MB). Free memory was 170.8 MB in the beginning and 113.8 MB in the end (delta: 57.0 MB). Peak memory consumption was 93.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:24,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 194.88 ms. Allocated memory is still 144.2 MB. Free memory was 104.1 MB in the beginning and 94.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.11 ms. Allocated memory was 144.2 MB in the beginning and 205.0 MB in the end (delta: 60.8 MB). Free memory was 94.6 MB in the beginning and 183.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 241.23 ms. Allocated memory is still 205.0 MB. Free memory was 183.5 MB in the beginning and 170.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3691.75 ms. Allocated memory was 205.0 MB in the beginning and 241.7 MB in the end (delta: 36.7 MB). Free memory was 170.8 MB in the beginning and 113.8 MB in the end (delta: 57.0 MB). Peak memory consumption was 93.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 25]: Loop Invariant Derived loop invariant: (!(0 == __return_main) || ((((((0 <= main__i && main__j <= 2147483647) && main__x <= 2147483647) && 0 <= main__j) && main__i <= 2147483647) && \old(__return_72) == __return_72) && main__y <= 2147483647)) || !(\old(__return_72) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 3.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 23 SDtfs, 115 SDslu, 61 SDs, 0 SdLazy, 91 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.8s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 61 HoareAnnotationTreeSize, 5 FomulaSimplifications, 122 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 2168 SizeOfPredicates, 8 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 610, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 21, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 12, TOOLS_POST_TIME[ms]: 30, TOOLS_POST_CALL_APPLICATIONS: 4, TOOLS_POST_CALL_TIME[ms]: 6, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME[ms]: 2, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME[ms]: 29, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 15, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 24, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 19, DOMAIN_JOIN_TIME[ms]: 335, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 112, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 15, DOMAIN_ISBOTTOM_APPLICATIONS: 1, DOMAIN_ISBOTTOM_TIME[ms]: 1, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 273, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 267, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME[ms]: 18, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 18, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 14, DAG_COMPRESSION_PROCESSED_NODES: 71, DAG_COMPRESSION_RETAINED_NODES: 38, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...