./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/afnp2014.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/loop-lit/afnp2014.i -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 d51c6cc706e0ce829ba547908cd819c55d1b3081 ....................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:02:20,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:02:20,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:02:20,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:02:20,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:02:20,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:02:20,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:02:20,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:02:20,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:02:20,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:02:20,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:02:20,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:02:20,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:02:20,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:02:20,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:02:20,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:02:20,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:02:20,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:02:20,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:02:20,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:02:20,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:02:20,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:02:20,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:02:20,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:02:20,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:02:20,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:02:20,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:02:20,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:02:20,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:02:20,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:02:20,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:02:20,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:02:20,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:02:20,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:02:20,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:02:20,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:02:20,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:02:20,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:02:20,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:02:20,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:02:20,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:02:20,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:02:20,328 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:02:20,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:02:20,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:02:20,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:02:20,330 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:02:20,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:02:20,331 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:02:20,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:02:20,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:02:20,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:02:20,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:02:20,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:02:20,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:02:20,333 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:02:20,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:02:20,334 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:02:20,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:02:20,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:02:20,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:02:20,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:02:20,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:02:20,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:02:20,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:02:20,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:02:20,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:02:20,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:02:20,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:02:20,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:02:20,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> d51c6cc706e0ce829ba547908cd819c55d1b3081 [2019-11-28 00:02:20,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:02:20,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:02:20,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:02:20,688 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:02:20,688 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:02:20,689 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/afnp2014.i [2019-11-28 00:02:20,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2518538/1901f2e3e3e34bf78f670dddaccfb686/FLAG5592bd9fc [2019-11-28 00:02:21,222 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:02:21,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/afnp2014.i [2019-11-28 00:02:21,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2518538/1901f2e3e3e34bf78f670dddaccfb686/FLAG5592bd9fc [2019-11-28 00:02:21,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2518538/1901f2e3e3e34bf78f670dddaccfb686 [2019-11-28 00:02:21,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:02:21,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:02:21,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:02:21,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:02:21,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:02:21,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f897cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21, skipping insertion in model container [2019-11-28 00:02:21,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:02:21,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:02:21,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:02:21,818 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:02:21,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:02:21,850 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:02:21,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21 WrapperNode [2019-11-28 00:02:21,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:02:21,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:02:21,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:02:21,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:02:21,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:02:21,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:02:21,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:02:21,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:02:21,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (1/1) ... [2019-11-28 00:02:21,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:02:21,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:02:21,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:02:21,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:02:21,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (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 [2019-11-28 00:02:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:02:22,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:02:22,187 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:02:22,187 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 00:02:22,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:22 BoogieIcfgContainer [2019-11-28 00:02:22,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:02:22,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:02:22,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:02:22,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:02:22,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:02:21" (1/3) ... [2019-11-28 00:02:22,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a08f782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:02:22, skipping insertion in model container [2019-11-28 00:02:22,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:21" (2/3) ... [2019-11-28 00:02:22,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a08f782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:02:22, skipping insertion in model container [2019-11-28 00:02:22,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:22" (3/3) ... [2019-11-28 00:02:22,196 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2019-11-28 00:02:22,204 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:02:22,210 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:02:22,222 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:02:22,248 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:02:22,248 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:02:22,248 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:02:22,248 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:02:22,248 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:02:22,248 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:02:22,249 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:02:22,249 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:02:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-28 00:02:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 00:02:22,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:22,272 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 00:02:22,273 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:22,280 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-28 00:02:22,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:22,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681947302] [2019-11-28 00:02:22,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:22,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681947302] [2019-11-28 00:02:22,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:02:22,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 00:02:22,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828341076] [2019-11-28 00:02:22,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 00:02:22,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:22,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 00:02:22,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:02:22,414 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-28 00:02:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:22,428 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-28 00:02:22,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 00:02:22,429 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-28 00:02:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:22,436 INFO L225 Difference]: With dead ends: 20 [2019-11-28 00:02:22,437 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 00:02:22,439 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:02:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 00:02:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 00:02:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 00:02:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-28 00:02:22,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-28 00:02:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:22,467 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-28 00:02:22,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 00:02:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-28 00:02:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 00:02:22,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:22,468 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:02:22,468 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:22,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1484098869, now seen corresponding path program 1 times [2019-11-28 00:02:22,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:22,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243891148] [2019-11-28 00:02:22,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:22,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243891148] [2019-11-28 00:02:22,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:02:22,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:02:22,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591920542] [2019-11-28 00:02:22,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:02:22,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:22,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:02:22,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:02:22,624 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-11-28 00:02:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:22,738 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-28 00:02:22,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:02:22,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 00:02:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:22,739 INFO L225 Difference]: With dead ends: 15 [2019-11-28 00:02:22,739 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 00:02:22,740 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:02:22,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 00:02:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 00:02:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 00:02:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-28 00:02:22,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2019-11-28 00:02:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:22,745 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-28 00:02:22,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:02:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-28 00:02:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 00:02:22,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:22,746 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 00:02:22,747 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:22,747 INFO L82 PathProgramCache]: Analyzing trace with hash 935349177, now seen corresponding path program 1 times [2019-11-28 00:02:22,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:22,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055255627] [2019-11-28 00:02:22,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:22,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055255627] [2019-11-28 00:02:22,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111901714] [2019-11-28 00:02:22,858 INFO L94 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 [2019-11-28 00:02:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:22,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 00:02:22,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:02:22,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:02:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:22,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:02:22,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-28 00:02:22,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063656716] [2019-11-28 00:02:22,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:02:22,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:22,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:02:22,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:02:22,970 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 6 states. [2019-11-28 00:02:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:23,028 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-28 00:02:23,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:02:23,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-28 00:02:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:23,030 INFO L225 Difference]: With dead ends: 18 [2019-11-28 00:02:23,031 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 00:02:23,031 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:02:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 00:02:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 00:02:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 00:02:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-28 00:02:23,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 10 [2019-11-28 00:02:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:23,039 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-28 00:02:23,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:02:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-28 00:02:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 00:02:23,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:23,041 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2019-11-28 00:02:23,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:23,247 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:23,247 INFO L82 PathProgramCache]: Analyzing trace with hash 570926091, now seen corresponding path program 2 times [2019-11-28 00:02:23,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:23,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826697894] [2019-11-28 00:02:23,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:23,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826697894] [2019-11-28 00:02:23,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873871889] [2019-11-28 00:02:23,331 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:23,361 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:02:23,361 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:02:23,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 00:02:23,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:02:23,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:02:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:23,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:02:23,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-28 00:02:23,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833136140] [2019-11-28 00:02:23,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 00:02:23,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:23,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 00:02:23,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:02:23,408 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 8 states. [2019-11-28 00:02:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:23,463 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-11-28 00:02:23,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:02:23,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-11-28 00:02:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:23,464 INFO L225 Difference]: With dead ends: 14 [2019-11-28 00:02:23,464 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:02:23,465 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-28 00:02:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:02:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:02:23,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:02:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:02:23,466 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-28 00:02:23,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:23,467 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:02:23,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 00:02:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:02:23,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:02:23,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:23,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:02:23,708 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:02:23,708 INFO L246 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-28 00:02:23,708 INFO L246 CegarLoopResult]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2019-11-28 00:02:23,709 INFO L242 CegarLoopResult]: At program point L13-5(lines 13 16) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~y~0)) [2019-11-28 00:02:23,709 INFO L246 CegarLoopResult]: For program point L13-6(lines 13 16) no Hoare annotation was computed. [2019-11-28 00:02:23,709 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 00:02:23,709 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:02:23,709 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:02:23,710 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 00:02:23,710 INFO L249 CegarLoopResult]: At program point L18(lines 10 19) the Hoare annotation is: true [2019-11-28 00:02:23,710 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 00:02:23,710 INFO L249 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-28 00:02:23,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:02:23 BoogieIcfgContainer [2019-11-28 00:02:23,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:02:23,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:02:23,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:02:23,731 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:02:23,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:22" (3/4) ... [2019-11-28 00:02:23,737 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:02:23,750 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 00:02:23,751 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:02:23,795 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:02:23,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:02:23,799 INFO L168 Benchmark]: Toolchain (without parser) took 2213.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -42.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:23,800 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:02:23,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.99 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:23,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.31 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:02:23,802 INFO L168 Benchmark]: Boogie Preprocessor took 72.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:23,803 INFO L168 Benchmark]: RCFGBuilder took 232.39 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:23,804 INFO L168 Benchmark]: TraceAbstraction took 1540.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.6 MB). Peak memory consumption was 74.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:23,805 INFO L168 Benchmark]: Witness Printer took 65.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:23,809 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 265.99 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.31 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 232.39 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1540.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.6 MB). Peak memory consumption was 74.6 MB. Max. memory is 11.5 GB. * Witness Printer took 65.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (y <= x && 1 <= x) && 0 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 34 SDs, 0 SdLazy, 32 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 3 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1669 SizeOfPredicates, 8 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...