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/Problem13_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:59:08,274 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:59:08,276 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:59:08,289 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:59:08,289 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:59:08,290 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:59:08,292 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:59:08,294 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:59:08,296 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:59:08,296 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:59:08,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:59:08,299 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:59:08,300 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:59:08,304 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:59:08,307 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:59:08,308 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:59:08,309 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:59:08,311 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:59:08,317 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:59:08,325 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:59:08,326 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:59:08,327 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:59:08,343 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 02:59:08,354 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:59:08,354 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:59:08,357 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:59:08,358 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:59:08,359 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 [2018-10-27 02:59:08,374 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:59:08,374 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:59:08,375 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:59:08,375 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:59:08,375 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:59:08,375 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:59:08,376 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:59:08,376 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:59:08,376 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:59:08,376 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:59:08,376 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:59:08,376 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:59:08,377 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:59:08,377 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:59:08,378 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:59:08,378 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:59:08,378 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:59:08,378 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:59:08,378 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:59:08,378 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:59:08,379 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:59:08,379 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:59:08,379 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:59:08,379 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:59:08,379 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:59:08,380 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:59:08,380 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:59:08,380 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:59:08,380 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:59:08,381 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:59:08,381 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:59:08,381 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:59:08,381 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:59:08,381 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:59:08,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:59:08,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:59:08,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:59:08,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:59:08,448 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:59:08,448 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-10-27 02:59:08,511 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9a85e1bf/800ffc3e1c51456491ede2c44c7a2270/FLAG040c3f1a1 [2018-10-27 02:59:09,391 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:59:09,392 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-10-27 02:59:09,435 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9a85e1bf/800ffc3e1c51456491ede2c44c7a2270/FLAG040c3f1a1 [2018-10-27 02:59:09,455 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9a85e1bf/800ffc3e1c51456491ede2c44c7a2270 [2018-10-27 02:59:09,468 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:59:09,470 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:59:09,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:59:09,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:59:09,476 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:59:09,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:09" (1/1) ... [2018-10-27 02:59:09,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cf1b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:09, skipping insertion in model container [2018-10-27 02:59:09,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:09" (1/1) ... [2018-10-27 02:59:09,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:59:09,676 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:59:11,244 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:59:11,250 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:59:12,163 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:59:12,203 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:59:12,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12 WrapperNode [2018-10-27 02:59:12,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:59:12,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:59:12,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:59:12,205 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:59:12,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (1/1) ... [2018-10-27 02:59:12,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (1/1) ... [2018-10-27 02:59:12,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:59:12,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:59:12,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:59:12,759 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:59:12,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (1/1) ... [2018-10-27 02:59:12,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (1/1) ... [2018-10-27 02:59:12,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (1/1) ... [2018-10-27 02:59:12,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (1/1) ... [2018-10-27 02:59:12,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (1/1) ... [2018-10-27 02:59:12,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (1/1) ... [2018-10-27 02:59:12,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (1/1) ... [2018-10-27 02:59:13,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:59:13,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:59:13,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:59:13,027 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:59:13,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (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 [2018-10-27 02:59:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:59:13,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:59:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:59:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:59:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:59:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:59:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:59:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:59:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:59:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:59:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:59:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:59:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:59:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:59:23,961 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:59:23,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:23 BoogieIcfgContainer [2018-10-27 02:59:23,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:59:23,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:59:23,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:59:23,966 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:59:23,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:59:09" (1/3) ... [2018-10-27 02:59:23,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6757bcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:23, skipping insertion in model container [2018-10-27 02:59:23,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:12" (2/3) ... [2018-10-27 02:59:23,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6757bcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:23, skipping insertion in model container [2018-10-27 02:59:23,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:23" (3/3) ... [2018-10-27 02:59:23,970 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label55_true-unreach-call.c [2018-10-27 02:59:23,980 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:59:23,990 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:59:24,008 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:59:24,056 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:59:24,056 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:59:24,057 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:59:24,057 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:59:24,057 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:59:24,057 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:59:24,057 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:59:24,057 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:59:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 02:59:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-27 02:59:24,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:59:24,114 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] [2018-10-27 02:59:24,116 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:59:24,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:59:24,123 INFO L82 PathProgramCache]: Analyzing trace with hash -661106381, now seen corresponding path program 1 times [2018-10-27 02:59:24,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:59:24,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:24,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:59:24,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:24,176 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:59:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:59:24,550 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:59:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:59:24,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:59:24,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:59:24,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:59:24,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:59:24,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:59:24,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:59:24,695 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-27 02:59:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:59:33,673 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-27 02:59:33,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:59:33,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-10-27 02:59:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:59:33,713 INFO L225 Difference]: With dead ends: 3097 [2018-10-27 02:59:33,713 INFO L226 Difference]: Without dead ends: 1975 [2018-10-27 02:59:33,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:59:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-27 02:59:33,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-27 02:59:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-27 02:59:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-27 02:59:33,914 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 55 [2018-10-27 02:59:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:59:33,915 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-27 02:59:33,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:59:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-27 02:59:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-27 02:59:33,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:59:33,932 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, 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] [2018-10-27 02:59:33,933 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:59:33,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:59:33,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1569430114, now seen corresponding path program 1 times [2018-10-27 02:59:33,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:59:33,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:33,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:59:33,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:33,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:59:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:59:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:59:34,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:59:34,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 02:59:34,275 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:59:34,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 02:59:34,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 02:59:34,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 02:59:34,278 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-27 02:59:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:59:59,121 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-10-27 02:59:59,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 02:59:59,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-10-27 02:59:59,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:59:59,149 INFO L225 Difference]: With dead ends: 5737 [2018-10-27 02:59:59,149 INFO L226 Difference]: Without dead ends: 3769 [2018-10-27 02:59:59,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 02:59:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-10-27 02:59:59,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-10-27 02:59:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-10-27 02:59:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-10-27 02:59:59,266 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 131 [2018-10-27 02:59:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:59:59,267 INFO L481 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-10-27 02:59:59,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 02:59:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-10-27 02:59:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 02:59:59,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:59:59,273 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, 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] [2018-10-27 02:59:59,273 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:59:59,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:59:59,274 INFO L82 PathProgramCache]: Analyzing trace with hash -265518658, now seen corresponding path program 1 times [2018-10-27 02:59:59,276 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:59:59,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:59,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:59:59,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:59,277 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:59:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:59:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:59:59,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:59:59,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 02:59:59,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:59:59,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 02:59:59,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 02:59:59,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 02:59:59,671 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 5 states. [2018-10-27 03:00:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:00:27,683 INFO L93 Difference]: Finished difference Result 13663 states and 21762 transitions. [2018-10-27 03:00:27,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:00:27,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-27 03:00:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:00:27,755 INFO L225 Difference]: With dead ends: 13663 [2018-10-27 03:00:27,756 INFO L226 Difference]: Without dead ends: 9984 [2018-10-27 03:00:27,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:00:27,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9984 states. [2018-10-27 03:00:28,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9984 to 9794. [2018-10-27 03:00:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9794 states. [2018-10-27 03:00:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9794 states to 9794 states and 14503 transitions. [2018-10-27 03:00:28,064 INFO L78 Accepts]: Start accepts. Automaton has 9794 states and 14503 transitions. Word has length 145 [2018-10-27 03:00:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:00:28,065 INFO L481 AbstractCegarLoop]: Abstraction has 9794 states and 14503 transitions. [2018-10-27 03:00:28,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:00:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 9794 states and 14503 transitions. [2018-10-27 03:00:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-27 03:00:28,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:00:28,071 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, 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] [2018-10-27 03:00:28,071 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:00:28,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:00:28,072 INFO L82 PathProgramCache]: Analyzing trace with hash -507392094, now seen corresponding path program 1 times [2018-10-27 03:00:28,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:00:28,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:28,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:00:28,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:28,073 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:00:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:00:28,373 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:00:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:00:28,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:00:28,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:00:28,490 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:00:28,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:00:28,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:00:28,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:00:28,491 INFO L87 Difference]: Start difference. First operand 9794 states and 14503 transitions. Second operand 6 states. [2018-10-27 03:00:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:00:43,875 INFO L93 Difference]: Finished difference Result 34188 states and 53813 transitions. [2018-10-27 03:00:43,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:00:43,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-10-27 03:00:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:00:44,003 INFO L225 Difference]: With dead ends: 34188 [2018-10-27 03:00:44,003 INFO L226 Difference]: Without dead ends: 24400 [2018-10-27 03:00:44,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:00:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24400 states. [2018-10-27 03:00:44,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24400 to 24166. [2018-10-27 03:00:44,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24166 states. [2018-10-27 03:00:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24166 states to 24166 states and 34076 transitions. [2018-10-27 03:00:44,693 INFO L78 Accepts]: Start accepts. Automaton has 24166 states and 34076 transitions. Word has length 163 [2018-10-27 03:00:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:00:44,694 INFO L481 AbstractCegarLoop]: Abstraction has 24166 states and 34076 transitions. [2018-10-27 03:00:44,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:00:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 24166 states and 34076 transitions. [2018-10-27 03:00:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-27 03:00:44,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:00:44,700 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, 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] [2018-10-27 03:00:44,700 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:00:44,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:00:44,701 INFO L82 PathProgramCache]: Analyzing trace with hash -698990030, now seen corresponding path program 1 times [2018-10-27 03:00:44,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:00:44,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:44,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:00:44,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:44,702 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:00:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:00:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:00:44,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:00:44,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:00:44,938 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:00:44,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:00:44,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:00:44,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:00:44,940 INFO L87 Difference]: Start difference. First operand 24166 states and 34076 transitions. Second operand 4 states. [2018-10-27 03:00:56,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:00:56,445 INFO L93 Difference]: Finished difference Result 66643 states and 99975 transitions. [2018-10-27 03:00:56,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:00:56,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2018-10-27 03:00:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:00:56,636 INFO L225 Difference]: With dead ends: 66643 [2018-10-27 03:00:56,637 INFO L226 Difference]: Without dead ends: 42483 [2018-10-27 03:00:56,711 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 [2018-10-27 03:00:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42483 states. [2018-10-27 03:00:57,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42483 to 42430. [2018-10-27 03:00:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42430 states. [2018-10-27 03:00:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42430 states to 42430 states and 60063 transitions. [2018-10-27 03:00:57,697 INFO L78 Accepts]: Start accepts. Automaton has 42430 states and 60063 transitions. Word has length 171 [2018-10-27 03:00:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:00:57,698 INFO L481 AbstractCegarLoop]: Abstraction has 42430 states and 60063 transitions. [2018-10-27 03:00:57,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:00:57,698 INFO L276 IsEmpty]: Start isEmpty. Operand 42430 states and 60063 transitions. [2018-10-27 03:00:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-27 03:00:57,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:00:57,721 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:00:57,722 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:00:57,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:00:57,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1869313388, now seen corresponding path program 1 times [2018-10-27 03:00:57,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:00:57,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:57,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:00:57,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:57,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:00:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:00:58,021 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:00:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 96 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:00:58,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:00:58,411 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:00:58,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-27 03:00:58,419 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2967], [2969], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3155], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3336], [3341], [3343], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 03:00:58,533 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:00:58,534 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:01:06,320 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:01:06,322 INFO L272 AbstractInterpreter]: Visited 122 different actions 122 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 03:01:06,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:06,333 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:01:12,226 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 71.73% of their original sizes. [2018-10-27 03:01:12,226 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:01:13,719 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-10-27 03:01:13,719 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:01:13,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:01:13,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-27 03:01:13,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:01:13,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 03:01:13,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 03:01:13,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 03:01:13,722 INFO L87 Difference]: Start difference. First operand 42430 states and 60063 transitions. Second operand 11 states. [2018-10-27 03:01:46,465 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 03:02:53,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:02:53,987 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:02:53,992 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:02:53,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:02:53 BoogieIcfgContainer [2018-10-27 03:02:53,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:02:53,994 INFO L168 Benchmark]: Toolchain (without parser) took 224524.72 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 236.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:02:53,995 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-27 03:02:53,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2732.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:02:53,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 554.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 804.3 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:02:53,998 INFO L168 Benchmark]: Boogie Preprocessor took 267.14 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: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:02:53,999 INFO L168 Benchmark]: RCFGBuilder took 10935.13 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 192.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 661.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:02:54,000 INFO L168 Benchmark]: TraceAbstraction took 210030.49 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-10-27 03:02:54,006 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2732.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 554.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 804.3 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 267.14 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: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10935.13 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 192.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 661.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210030.49 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was constructing difference of abstraction (42430states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (8711 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 209.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 189.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2944 SDtfs, 16621 SDslu, 2388 SDs, 0 SdLazy, 29045 SolverSat, 8504 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 145.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 292 GetRequests, 254 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42430occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9962830769230769 AbsIntWeakeningRatio, 0.112 AbsIntAvgWeakeningVarsNumRemoved, 29.512 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 562 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 916 NumberOfCodeBlocks, 916 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 910 ConstructedInterpolants, 0 QuantifiedInterpolants, 476944 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 293/365 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown