java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:21:23,258 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:21:23,260 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:21:23,274 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:21:23,274 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:21:23,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:21:23,277 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:21:23,279 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:21:23,281 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:21:23,281 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:21:23,282 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:21:23,283 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:21:23,284 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:21:23,285 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:21:23,286 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:21:23,287 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:21:23,288 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:21:23,290 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:21:23,295 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:21:23,296 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:21:23,297 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:21:23,299 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:21:23,301 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:21:23,309 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:21:23,327 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:21:23,327 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:21:23,328 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:21:23,328 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:21:23,329 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:21:23,329 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:21:23,329 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:21:23,329 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:21:23,329 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:21:23,330 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:21:23,330 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:21:23,330 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:21:23,331 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:21:23,331 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:21:23,331 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:21:23,331 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:21:23,332 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:21:23,332 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:21:23,332 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:21:23,332 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:21:23,333 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:21:23,333 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:21:23,333 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:21:23,333 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:21:23,334 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:21:23,334 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:21:23,334 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:21:23,334 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:21:23,334 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:21:23,335 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:21:23,335 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:21:23,335 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:21:23,335 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:21:23,335 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:21:23,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:21:23,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:21:23,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:21:23,437 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:21:23,438 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:21:23,439 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03_true-unreach-call_false-termination.c [2018-10-24 19:21:23,508 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/15d175ed8/33ebcf4cd6384aceacdd8910bbab958f/FLAG8add1e1d7 [2018-10-24 19:21:24,148 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:21:24,149 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label03_true-unreach-call_false-termination.c [2018-10-24 19:21:24,161 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/15d175ed8/33ebcf4cd6384aceacdd8910bbab958f/FLAG8add1e1d7 [2018-10-24 19:21:24,189 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/15d175ed8/33ebcf4cd6384aceacdd8910bbab958f [2018-10-24 19:21:24,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:21:24,205 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:21:24,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:21:24,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:21:24,211 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:21:24,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:24,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a25570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24, skipping insertion in model container [2018-10-24 19:21:24,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:24,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:21:24,310 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:21:24,821 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:21:24,829 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:21:24,956 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:21:24,977 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:21:24,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24 WrapperNode [2018-10-24 19:21:24,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:21:24,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:21:24,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:21:24,979 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:21:24,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:25,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:25,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:21:25,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:21:25,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:21:25,196 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:21:25,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:25,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:25,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:25,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:25,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:25,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:25,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... [2018-10-24 19:21:25,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:21:25,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:21:25,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:21:25,296 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:21:25,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 19:21:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:21:25,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:21:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:21:25,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:21:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:21:25,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:21:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:21:25,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:21:29,091 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:21:29,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:21:29 BoogieIcfgContainer [2018-10-24 19:21:29,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:21:29,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:21:29,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:21:29,098 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:21:29,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:21:24" (1/3) ... [2018-10-24 19:21:29,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207bf428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:21:29, skipping insertion in model container [2018-10-24 19:21:29,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:24" (2/3) ... [2018-10-24 19:21:29,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207bf428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:21:29, skipping insertion in model container [2018-10-24 19:21:29,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:21:29" (3/3) ... [2018-10-24 19:21:29,103 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label03_true-unreach-call_false-termination.c [2018-10-24 19:21:29,114 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:21:29,124 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:21:29,144 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:21:29,187 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:21:29,188 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:21:29,188 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:21:29,188 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:21:29,188 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:21:29,189 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:21:29,189 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:21:29,189 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:21:29,221 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:21:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 19:21:29,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:29,249 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:21:29,254 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:29,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:29,262 INFO L82 PathProgramCache]: Analyzing trace with hash -304516904, now seen corresponding path program 1 times [2018-10-24 19:21:29,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:29,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:29,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:29,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:29,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:30,084 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:21:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:21:30,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:21:30,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:21:30,347 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:30,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:21:30,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:21:30,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:21:30,374 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 4 states. [2018-10-24 19:21:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:21:32,820 INFO L93 Difference]: Finished difference Result 788 states and 1373 transitions. [2018-10-24 19:21:32,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:21:32,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-24 19:21:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:21:32,847 INFO L225 Difference]: With dead ends: 788 [2018-10-24 19:21:32,847 INFO L226 Difference]: Without dead ends: 545 [2018-10-24 19:21:32,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:21:32,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2018-10-24 19:21:32,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 383. [2018-10-24 19:21:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-24 19:21:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 631 transitions. [2018-10-24 19:21:32,947 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 631 transitions. Word has length 136 [2018-10-24 19:21:32,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:21:32,948 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 631 transitions. [2018-10-24 19:21:32,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:21:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 631 transitions. [2018-10-24 19:21:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 19:21:32,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:32,956 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:21:32,956 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:32,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:32,957 INFO L82 PathProgramCache]: Analyzing trace with hash -787094811, now seen corresponding path program 1 times [2018-10-24 19:21:32,957 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:32,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:32,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:32,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:32,959 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:21:33,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:21:33,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:21:33,384 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:33,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:21:33,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:21:33,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:21:33,387 INFO L87 Difference]: Start difference. First operand 383 states and 631 transitions. Second operand 5 states. [2018-10-24 19:21:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:21:34,763 INFO L93 Difference]: Finished difference Result 905 states and 1543 transitions. [2018-10-24 19:21:34,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:21:34,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-24 19:21:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:21:34,771 INFO L225 Difference]: With dead ends: 905 [2018-10-24 19:21:34,771 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 19:21:34,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:21:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 19:21:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-24 19:21:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-24 19:21:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 625 transitions. [2018-10-24 19:21:34,803 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 625 transitions. Word has length 145 [2018-10-24 19:21:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:21:34,803 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 625 transitions. [2018-10-24 19:21:34,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:21:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 625 transitions. [2018-10-24 19:21:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-24 19:21:34,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:34,808 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:21:34,808 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:34,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash 259218255, now seen corresponding path program 1 times [2018-10-24 19:21:34,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:34,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:34,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:34,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:34,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:35,038 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:21:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:21:35,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:21:35,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:21:35,202 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:35,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:21:35,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:21:35,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:21:35,204 INFO L87 Difference]: Start difference. First operand 382 states and 625 transitions. Second operand 6 states. [2018-10-24 19:21:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:21:37,874 INFO L93 Difference]: Finished difference Result 1198 states and 2052 transitions. [2018-10-24 19:21:37,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:21:37,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-10-24 19:21:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:21:37,883 INFO L225 Difference]: With dead ends: 1198 [2018-10-24 19:21:37,884 INFO L226 Difference]: Without dead ends: 822 [2018-10-24 19:21:37,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:21:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2018-10-24 19:21:37,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 810. [2018-10-24 19:21:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2018-10-24 19:21:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1267 transitions. [2018-10-24 19:21:37,955 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1267 transitions. Word has length 157 [2018-10-24 19:21:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:21:37,955 INFO L481 AbstractCegarLoop]: Abstraction has 810 states and 1267 transitions. [2018-10-24 19:21:37,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:21:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1267 transitions. [2018-10-24 19:21:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 19:21:37,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:37,961 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:21:37,961 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:37,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:37,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1241453342, now seen corresponding path program 1 times [2018-10-24 19:21:37,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:37,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:37,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:37,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:37,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:21:38,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:21:38,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:21:38,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:38,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:21:38,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:21:38,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:21:38,283 INFO L87 Difference]: Start difference. First operand 810 states and 1267 transitions. Second operand 5 states. [2018-10-24 19:21:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:21:40,173 INFO L93 Difference]: Finished difference Result 1759 states and 2791 transitions. [2018-10-24 19:21:40,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:21:40,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-10-24 19:21:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:21:40,179 INFO L225 Difference]: With dead ends: 1759 [2018-10-24 19:21:40,180 INFO L226 Difference]: Without dead ends: 807 [2018-10-24 19:21:40,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:21:40,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2018-10-24 19:21:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2018-10-24 19:21:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-10-24 19:21:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1249 transitions. [2018-10-24 19:21:40,214 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1249 transitions. Word has length 161 [2018-10-24 19:21:40,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:21:40,215 INFO L481 AbstractCegarLoop]: Abstraction has 807 states and 1249 transitions. [2018-10-24 19:21:40,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:21:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1249 transitions. [2018-10-24 19:21:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-24 19:21:40,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:40,219 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:21:40,220 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:40,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:40,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1229392870, now seen corresponding path program 1 times [2018-10-24 19:21:40,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:40,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:40,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:40,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:40,223 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:21:40,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:21:40,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:21:40,495 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:40,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:21:40,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:21:40,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:21:40,496 INFO L87 Difference]: Start difference. First operand 807 states and 1249 transitions. Second operand 5 states. [2018-10-24 19:21:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:21:41,482 INFO L93 Difference]: Finished difference Result 1749 states and 2745 transitions. [2018-10-24 19:21:41,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:21:41,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-10-24 19:21:41,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:21:41,488 INFO L225 Difference]: With dead ends: 1749 [2018-10-24 19:21:41,489 INFO L226 Difference]: Without dead ends: 800 [2018-10-24 19:21:41,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:21:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2018-10-24 19:21:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2018-10-24 19:21:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-10-24 19:21:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1221 transitions. [2018-10-24 19:21:41,520 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1221 transitions. Word has length 163 [2018-10-24 19:21:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:21:41,520 INFO L481 AbstractCegarLoop]: Abstraction has 800 states and 1221 transitions. [2018-10-24 19:21:41,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:21:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1221 transitions. [2018-10-24 19:21:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-24 19:21:41,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:41,525 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:21:41,526 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:41,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:41,526 INFO L82 PathProgramCache]: Analyzing trace with hash 397717782, now seen corresponding path program 1 times [2018-10-24 19:21:41,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:41,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:41,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:41,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:41,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:21:41,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:21:41,700 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:21:41,701 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-10-24 19:21:41,703 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [45], [50], [52], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [759], [761], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:21:41,796 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:21:41,796 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:22:20,217 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:22:20,220 INFO L272 AbstractInterpreter]: Visited 140 different actions 274 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-24 19:22:20,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:22:20,232 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:22:28,701 INFO L232 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 83.39% of their original sizes. [2018-10-24 19:22:28,702 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:25:08,334 INFO L413 sIntCurrentIteration]: We have 170 unified AI predicates [2018-10-24 19:25:08,334 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:25:08,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:25:08,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-24 19:25:08,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:25:08,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 19:25:08,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 19:25:08,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-10-24 19:25:08,337 INFO L87 Difference]: Start difference. First operand 800 states and 1221 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 19:25:47,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 19:25:47,880 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:25:47,887 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:25:47,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:25:47 BoogieIcfgContainer [2018-10-24 19:25:47,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:25:47,889 INFO L168 Benchmark]: Toolchain (without parser) took 263684.95 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -928.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 19:25:47,892 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:25:47,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:25:47,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:25:47,894 INFO L168 Benchmark]: Boogie Preprocessor took 99.55 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:25:47,901 INFO L168 Benchmark]: RCFGBuilder took 3796.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 7.1 GB. [2018-10-24 19:25:47,902 INFO L168 Benchmark]: TraceAbstraction took 258793.94 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -251.7 MB). Peak memory consumption was 972.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:25:47,911 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 216.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.55 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3796.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258793.94 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -251.7 MB). Peak memory consumption was 972.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 559]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 559). Cancelled while BasicCegarLoop was constructing difference of abstraction (800states) and FLOYD_HOARE automaton (currently 20 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (74 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 258.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 49.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 637 SDtfs, 2954 SDslu, 540 SDs, 0 SdLazy, 4041 SolverSat, 800 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 216 GetRequests, 127 SyntacticMatches, 49 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 164.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=810occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 38.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9947117396033809 AbsIntWeakeningRatio, 0.2 AbsIntAvgWeakeningVarsNumRemoved, 748.2588235294118 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 174 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 933 NumberOfCodeBlocks, 933 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 927 ConstructedInterpolants, 0 QuantifiedInterpolants, 1049283 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 107/109 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown