./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test17_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/ldv-regression/test17_true-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6dfa7040946af97f12868ff329bf2a2e2019a519 .......................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 15:50:15,219 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 15:50:15,221 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 15:50:15,233 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 15:50:15,234 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 15:50:15,235 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 15:50:15,236 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 15:50:15,238 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 15:50:15,239 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 15:50:15,240 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 15:50:15,241 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 15:50:15,242 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 15:50:15,243 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 15:50:15,244 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 15:50:15,245 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 15:50:15,246 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 15:50:15,247 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 15:50:15,248 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 15:50:15,250 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 15:50:15,252 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 15:50:15,253 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 15:50:15,255 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 15:50:15,257 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 15:50:15,258 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 15:50:15,258 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 15:50:15,259 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 15:50:15,260 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 15:50:15,261 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 15:50:15,262 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 15:50:15,263 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 15:50:15,263 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 15:50:15,264 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 15:50:15,264 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 15:50:15,264 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 15:50:15,265 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 15:50:15,266 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 15:50:15,267 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 15:50:15,298 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 15:50:15,298 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 15:50:15,300 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 15:50:15,301 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 15:50:15,301 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 15:50:15,301 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 15:50:15,301 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 15:50:15,301 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 15:50:15,301 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 15:50:15,302 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 15:50:15,303 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 15:50:15,303 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 15:50:15,303 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 15:50:15,303 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 15:50:15,304 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 15:50:15,304 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 15:50:15,304 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 15:50:15,304 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 15:50:15,304 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 15:50:15,305 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 15:50:15,306 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:50:15,306 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 15:50:15,307 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 15:50:15,307 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 15:50:15,307 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 15:50:15,307 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 15:50:15,307 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 15:50:15,307 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dfa7040946af97f12868ff329bf2a2e2019a519 [2019-01-14 15:50:15,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 15:50:15,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 15:50:15,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 15:50:15,376 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 15:50:15,376 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 15:50:15,377 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test17_true-unreach-call_true-termination.c [2019-01-14 15:50:15,428 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336141c5c/b2db12bddb264b75a931b4e54e94c43e/FLAG490bbf262 [2019-01-14 15:50:15,835 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 15:50:15,836 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test17_true-unreach-call_true-termination.c [2019-01-14 15:50:15,841 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336141c5c/b2db12bddb264b75a931b4e54e94c43e/FLAG490bbf262 [2019-01-14 15:50:16,223 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336141c5c/b2db12bddb264b75a931b4e54e94c43e [2019-01-14 15:50:16,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 15:50:16,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 15:50:16,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 15:50:16,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 15:50:16,232 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 15:50:16,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e85a5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16, skipping insertion in model container [2019-01-14 15:50:16,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 15:50:16,267 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 15:50:16,457 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:50:16,467 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 15:50:16,484 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:50:16,531 INFO L195 MainTranslator]: Completed translation [2019-01-14 15:50:16,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16 WrapperNode [2019-01-14 15:50:16,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 15:50:16,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 15:50:16,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 15:50:16,533 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 15:50:16,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 15:50:16,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 15:50:16,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 15:50:16,577 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 15:50:16,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (1/1) ... [2019-01-14 15:50:16,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 15:50:16,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 15:50:16,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 15:50:16,602 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 15:50:16,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (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 [2019-01-14 15:50:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 15:50:16,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 15:50:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-01-14 15:50:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 15:50:17,026 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 15:50:17,026 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-14 15:50:17,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:50:17 BoogieIcfgContainer [2019-01-14 15:50:17,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 15:50:17,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 15:50:17,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 15:50:17,032 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 15:50:17,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 03:50:16" (1/3) ... [2019-01-14 15:50:17,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce378bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:50:17, skipping insertion in model container [2019-01-14 15:50:17,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:16" (2/3) ... [2019-01-14 15:50:17,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce378bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:50:17, skipping insertion in model container [2019-01-14 15:50:17,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:50:17" (3/3) ... [2019-01-14 15:50:17,041 INFO L112 eAbstractionObserver]: Analyzing ICFG test17_true-unreach-call_true-termination.c [2019-01-14 15:50:17,062 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 15:50:17,079 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 15:50:17,116 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 15:50:17,168 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 15:50:17,169 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 15:50:17,169 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 15:50:17,169 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 15:50:17,169 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 15:50:17,169 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 15:50:17,170 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 15:50:17,170 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 15:50:17,171 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 15:50:17,186 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-01-14 15:50:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-14 15:50:17,193 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:50:17,194 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-14 15:50:17,197 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:50:17,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:50:17,204 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-01-14 15:50:17,206 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:50:17,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:50:17,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:50:17,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:50:17,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:50:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:50:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:50:17,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:50:17,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 15:50:17,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 15:50:17,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 15:50:17,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 15:50:17,398 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-01-14 15:50:17,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:50:17,419 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-01-14 15:50:17,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 15:50:17,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-01-14 15:50:17,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:50:17,429 INFO L225 Difference]: With dead ends: 13 [2019-01-14 15:50:17,429 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 15:50:17,433 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 15:50:17,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 15:50:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 15:50:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 15:50:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 15:50:17,461 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-01-14 15:50:17,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:50:17,462 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 15:50:17,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 15:50:17,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 15:50:17,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 15:50:17,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 15:50:17,662 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 15:50:17,662 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-14 15:50:17,663 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 15:50:17,663 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 15:50:17,663 INFO L444 ceAbstractionStarter]: At program point L18(lines 16 19) the Hoare annotation is: (and (= ULTIMATE.start_equal_~b.offset ULTIMATE.start_equal_~a.offset) (= ULTIMATE.start_equal_~a.base ULTIMATE.start_equal_~b.base)) [2019-01-14 15:50:17,664 INFO L444 ceAbstractionStarter]: At program point L11(lines 4 12) the Hoare annotation is: (and (= ULTIMATE.start_equal_~b.offset ULTIMATE.start_equal_~a.offset) (= ULTIMATE.start_equal_~a.base ULTIMATE.start_equal_~b.base)) [2019-01-14 15:50:17,664 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-01-14 15:50:17,664 INFO L444 ceAbstractionStarter]: At program point L6(lines 4 12) the Hoare annotation is: false [2019-01-14 15:50:17,664 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-01-14 15:50:17,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 03:50:17 BoogieIcfgContainer [2019-01-14 15:50:17,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 15:50:17,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 15:50:17,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 15:50:17,681 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 15:50:17,682 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:50:17" (3/4) ... [2019-01-14 15:50:17,686 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 15:50:17,697 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-01-14 15:50:17,697 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-14 15:50:17,746 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 15:50:17,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 15:50:17,749 INFO L168 Benchmark]: Toolchain (without parser) took 1522.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -119.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:50:17,751 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:50:17,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.92 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-01-14 15:50:17,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.59 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:50:17,755 INFO L168 Benchmark]: Boogie Preprocessor took 24.40 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:50:17,755 INFO L168 Benchmark]: RCFGBuilder took 426.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -151.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-14 15:50:17,757 INFO L168 Benchmark]: TraceAbstraction took 651.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-01-14 15:50:17,757 INFO L168 Benchmark]: Witness Printer took 65.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:50:17,767 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 303.92 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.59 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.40 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 426.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -151.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 651.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * Witness Printer took 65.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 4]: Loop Invariant Derived loop invariant: b == a && a == b - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: b == a && a == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 15 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...