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/Problem18_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:20:07,181 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:20:07,183 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:20:07,200 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:20:07,200 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:20:07,202 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:20:07,204 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:20:07,206 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:20:07,209 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:20:07,211 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:20:07,213 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:20:07,213 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:20:07,214 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:20:07,215 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:20:07,225 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:20:07,226 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:20:07,227 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:20:07,229 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:20:07,234 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:20:07,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:20:07,239 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:20:07,240 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:20:07,243 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:20:07,253 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:20:07,253 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:20:07,254 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:20:07,256 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:20:07,257 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 22:20:07,283 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:20:07,283 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:20:07,285 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:20:07,285 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:20:07,285 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:20:07,285 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:20:07,285 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:20:07,286 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:20:07,286 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:20:07,286 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:20:07,286 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:20:07,286 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:20:07,287 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:20:07,287 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:20:07,287 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:20:07,288 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:20:07,288 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:20:07,288 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:20:07,288 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:20:07,288 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:20:07,289 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:20:07,289 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:20:07,289 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:20:07,289 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:20:07,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:20:07,290 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:20:07,290 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:20:07,290 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:20:07,290 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:20:07,290 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:20:07,291 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:20:07,291 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:20:07,291 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:20:07,291 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:20:07,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:20:07,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:20:07,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:20:07,381 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:20:07,381 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:20:07,382 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-10-24 22:20:07,469 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65d1854bf/4d5eddda897e4420aa4db65e62a1796c/FLAGba1bf5b1f [2018-10-24 22:20:08,199 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:20:08,200 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-10-24 22:20:08,229 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65d1854bf/4d5eddda897e4420aa4db65e62a1796c/FLAGba1bf5b1f [2018-10-24 22:20:08,251 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65d1854bf/4d5eddda897e4420aa4db65e62a1796c [2018-10-24 22:20:08,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:20:08,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:20:08,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:20:08,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:20:08,273 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:20:08,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:08" (1/1) ... [2018-10-24 22:20:08,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:08, skipping insertion in model container [2018-10-24 22:20:08,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:08" (1/1) ... [2018-10-24 22:20:08,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:20:08,441 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:20:09,442 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:20:09,448 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:20:09,902 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:20:09,933 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:20:09,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09 WrapperNode [2018-10-24 22:20:09,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:20:09,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:20:09,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:20:09,935 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:20:09,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (1/1) ... [2018-10-24 22:20:10,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (1/1) ... [2018-10-24 22:20:10,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:20:10,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:20:10,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:20:10,337 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:20:10,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (1/1) ... [2018-10-24 22:20:10,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (1/1) ... [2018-10-24 22:20:10,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (1/1) ... [2018-10-24 22:20:10,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (1/1) ... [2018-10-24 22:20:10,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (1/1) ... [2018-10-24 22:20:10,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (1/1) ... [2018-10-24 22:20:10,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (1/1) ... [2018-10-24 22:20:10,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:20:10,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:20:10,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:20:10,534 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:20:10,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (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 22:20:10,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:20:10,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:20:10,610 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:20:10,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:20:10,610 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:20:10,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:20:10,611 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:20:10,611 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:20:10,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:20:10,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:20:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:20:10,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:20:19,180 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:20:19,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:20:19 BoogieIcfgContainer [2018-10-24 22:20:19,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:20:19,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:20:19,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:20:19,187 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:20:19,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:20:08" (1/3) ... [2018-10-24 22:20:19,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3388c74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:20:19, skipping insertion in model container [2018-10-24 22:20:19,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:09" (2/3) ... [2018-10-24 22:20:19,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3388c74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:20:19, skipping insertion in model container [2018-10-24 22:20:19,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:20:19" (3/3) ... [2018-10-24 22:20:19,191 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label40_true-unreach-call.c [2018-10-24 22:20:19,202 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:20:19,213 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:20:19,233 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:20:19,280 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:20:19,281 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:20:19,281 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:20:19,281 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:20:19,281 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:20:19,281 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:20:19,282 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:20:19,282 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:20:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:20:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-24 22:20:19,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:19,333 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] [2018-10-24 22:20:19,335 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:19,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:19,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1179800183, now seen corresponding path program 1 times [2018-10-24 22:20:19,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:19,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:19,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:19,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:19,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:19,941 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 22:20:19,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:19,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:20:19,945 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:19,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:20:19,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:20:19,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:20:19,977 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 22:20:27,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:27,148 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 22:20:27,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:20:27,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-10-24 22:20:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:27,181 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 22:20:27,181 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 22:20:27,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:20:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 22:20:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 22:20:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 22:20:27,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-24 22:20:27,368 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 51 [2018-10-24 22:20:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:27,369 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-24 22:20:27,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:20:27,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-24 22:20:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 22:20:27,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:27,384 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, 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] [2018-10-24 22:20:27,384 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:27,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:27,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1038500593, now seen corresponding path program 1 times [2018-10-24 22:20:27,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:27,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:27,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:27,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:27,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:27,780 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:20:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:27,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:27,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:20:27,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:27,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:20:27,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:20:27,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:20:27,955 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-10-24 22:20:36,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:36,867 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-10-24 22:20:36,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:20:36,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-24 22:20:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:36,888 INFO L225 Difference]: With dead ends: 4419 [2018-10-24 22:20:36,888 INFO L226 Difference]: Without dead ends: 2951 [2018-10-24 22:20:36,894 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 22:20:36,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-24 22:20:36,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-10-24 22:20:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-24 22:20:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-10-24 22:20:36,997 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 140 [2018-10-24 22:20:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:36,997 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-10-24 22:20:36,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:20:36,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-10-24 22:20:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-24 22:20:37,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:37,013 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, 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] [2018-10-24 22:20:37,013 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:37,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:37,014 INFO L82 PathProgramCache]: Analyzing trace with hash -429800468, now seen corresponding path program 1 times [2018-10-24 22:20:37,014 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:37,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:37,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:37,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:37,017 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:37,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:37,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:20:37,318 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:37,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:20:37,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:20:37,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:20:37,319 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-10-24 22:20:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:46,847 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-10-24 22:20:46,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:20:46,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-10-24 22:20:46,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:46,899 INFO L225 Difference]: With dead ends: 10194 [2018-10-24 22:20:46,899 INFO L226 Difference]: Without dead ends: 7272 [2018-10-24 22:20:46,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:20:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-10-24 22:20:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-10-24 22:20:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-10-24 22:20:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-10-24 22:20:47,161 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 187 [2018-10-24 22:20:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:47,162 INFO L481 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-10-24 22:20:47,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:20:47,163 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-10-24 22:20:47,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-24 22:20:47,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:47,167 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, 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] [2018-10-24 22:20:47,167 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:47,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:47,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1302575248, now seen corresponding path program 1 times [2018-10-24 22:20:47,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:47,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:47,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:47,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:47,170 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:47,475 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:20:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:47,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:47,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:20:47,867 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:47,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:20:47,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:20:47,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:20:47,870 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-10-24 22:20:53,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:53,733 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-10-24 22:20:53,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:20:53,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-24 22:20:53,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:53,787 INFO L225 Difference]: With dead ends: 17365 [2018-10-24 22:20:53,787 INFO L226 Difference]: Without dead ends: 10163 [2018-10-24 22:20:53,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:20:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-10-24 22:20:54,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-10-24 22:20:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-10-24 22:20:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-10-24 22:20:54,074 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 189 [2018-10-24 22:20:54,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:54,075 INFO L481 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-10-24 22:20:54,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:20:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-10-24 22:20:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-24 22:20:54,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:54,083 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:20:54,083 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:54,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:54,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1778582221, now seen corresponding path program 1 times [2018-10-24 22:20:54,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:54,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:54,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:54,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:54,085 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 22:20:54,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:54,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:20:54,325 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:54,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:20:54,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:20:54,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:20:54,326 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-10-24 22:21:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:21:04,709 INFO L93 Difference]: Finished difference Result 28811 states and 41798 transitions. [2018-10-24 22:21:04,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:21:04,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-10-24 22:21:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:21:04,789 INFO L225 Difference]: With dead ends: 28811 [2018-10-24 22:21:04,790 INFO L226 Difference]: Without dead ends: 18709 [2018-10-24 22:21:04,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:21:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2018-10-24 22:21:05,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 18709. [2018-10-24 22:21:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18709 states. [2018-10-24 22:21:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18709 states to 18709 states and 25926 transitions. [2018-10-24 22:21:05,225 INFO L78 Accepts]: Start accepts. Automaton has 18709 states and 25926 transitions. Word has length 247 [2018-10-24 22:21:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:21:05,226 INFO L481 AbstractCegarLoop]: Abstraction has 18709 states and 25926 transitions. [2018-10-24 22:21:05,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:21:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 18709 states and 25926 transitions. [2018-10-24 22:21:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-24 22:21:05,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:21:05,245 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:21:05,245 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:21:05,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:21:05,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1669490635, now seen corresponding path program 1 times [2018-10-24 22:21:05,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:21:05,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:21:05,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:21:05,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:21:05,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:21:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:21:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 148 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:21:05,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:21:05,685 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:21:05,686 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-10-24 22:21:05,691 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1931], [1933], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:21:05,795 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:21:05,795 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:21:09,357 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:21:09,416 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:21:09,417 INFO L272 AbstractInterpreter]: Visited 138 different actions 138 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:21:09,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:21:09,453 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:21:12,063 INFO L232 lantSequenceWeakener]: Weakened 283 states. On average, predicates are now at 77.87% of their original sizes. [2018-10-24 22:21:12,064 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:21:12,553 INFO L413 sIntCurrentIteration]: We have 290 unified AI predicates [2018-10-24 22:21:12,554 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:21:12,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:21:12,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 22:21:12,555 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:21:12,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:21:12,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:21:12,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:21:12,556 INFO L87 Difference]: Start difference. First operand 18709 states and 25926 transitions. Second operand 7 states. [2018-10-24 22:22:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:03,132 INFO L93 Difference]: Finished difference Result 38117 states and 52714 transitions. [2018-10-24 22:22:03,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:22:03,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2018-10-24 22:22:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:03,200 INFO L225 Difference]: With dead ends: 38117 [2018-10-24 22:22:03,200 INFO L226 Difference]: Without dead ends: 19414 [2018-10-24 22:22:03,247 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:22:03,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19414 states. [2018-10-24 22:22:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19414 to 19412. [2018-10-24 22:22:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19412 states. [2018-10-24 22:22:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 26641 transitions. [2018-10-24 22:22:03,631 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 26641 transitions. Word has length 291 [2018-10-24 22:22:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:03,631 INFO L481 AbstractCegarLoop]: Abstraction has 19412 states and 26641 transitions. [2018-10-24 22:22:03,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:22:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 26641 transitions. [2018-10-24 22:22:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-24 22:22:03,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:03,658 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-10-24 22:22:03,658 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:03,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:03,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1087569641, now seen corresponding path program 1 times [2018-10-24 22:22:03,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:03,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:03,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:03,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:03,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:04,219 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:04,615 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:05,060 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 22:22:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 191 proven. 283 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:22:05,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:22:05,634 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:22:05,634 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 479 with the following transitions: [2018-10-24 22:22:05,635 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1931], [1933], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:22:05,642 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:22:05,643 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:22:08,200 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:22:18,393 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:22:18,393 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:22:18,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:18,400 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:22:24,696 INFO L232 lantSequenceWeakener]: Weakened 168 states. On average, predicates are now at 77.6% of their original sizes. [2018-10-24 22:22:24,697 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:23:24,851 INFO L413 sIntCurrentIteration]: We have 477 unified AI predicates [2018-10-24 22:23:24,851 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:23:24,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:23:24,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-10-24 22:23:24,852 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:24,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 22:23:24,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 22:23:24,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-10-24 22:23:24,853 INFO L87 Difference]: Start difference. First operand 19412 states and 26641 transitions. Second operand 15 states. Received shutdown request... [2018-10-24 22:23:52,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:23:52,162 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:23:52,167 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:23:52,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:23:52 BoogieIcfgContainer [2018-10-24 22:23:52,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:23:52,168 INFO L168 Benchmark]: Toolchain (without parser) took 223903.13 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 22:23:52,170 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:23:52,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1665.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:52,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 400.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -942.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:52,172 INFO L168 Benchmark]: Boogie Preprocessor took 197.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:52,173 INFO L168 Benchmark]: RCFGBuilder took 8647.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.6 MB). Peak memory consumption was 500.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:52,173 INFO L168 Benchmark]: TraceAbstraction took 212984.59 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -811.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 22:23:52,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1665.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 400.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -942.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 197.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8647.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.6 MB). Peak memory consumption was 500.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212984.59 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -811.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while BasicCegarLoop was constructing difference of abstraction (19412states) and FLOYD_HOARE automaton (currently 9 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (99 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 212.8s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 120.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2556 SDtfs, 12459 SDslu, 692 SDs, 0 SdLazy, 22410 SolverSat, 6329 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 812 GetRequests, 672 SyntacticMatches, 93 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 61.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19412occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9968137671711731 AbsIntWeakeningRatio, 0.07561929595827901 AbsIntAvgWeakeningVarsNumRemoved, 354.47979139504565 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 144 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1583 NumberOfCodeBlocks, 1583 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1576 ConstructedInterpolants, 0 QuantifiedInterpolants, 2413257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 658/983 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown