java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:10:22,078 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:10:22,080 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:10:22,098 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:10:22,099 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:10:22,100 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:10:22,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:10:22,105 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:10:22,108 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:10:22,115 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:10:22,116 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:10:22,116 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:10:22,122 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:10:22,123 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:10:22,125 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:10:22,128 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:10:22,130 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:10:22,131 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:10:22,138 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:10:22,140 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:10:22,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:10:22,147 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:10:22,153 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:10:22,153 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:10:22,153 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:10:22,154 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:10:22,155 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:10:22,157 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:10:22,158 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:10:22,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:10:22,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:10:22,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:10:22,160 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:10:22,160 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:10:22,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:10:22,165 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:10:22,165 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:10:22,181 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:10:22,182 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:10:22,183 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:10:22,183 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:10:22,183 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:10:22,183 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:10:22,184 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:10:22,184 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:10:22,184 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:10:22,184 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:10:22,184 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:10:22,185 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:10:22,185 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:10:22,186 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:10:22,186 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:10:22,186 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:10:22,186 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:10:22,186 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:10:22,187 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:10:22,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:10:22,187 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:10:22,187 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:10:22,187 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:10:22,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:10:22,188 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:10:22,188 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:10:22,188 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:10:22,189 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:10:22,189 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:10:22,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:10:22,189 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:10:22,189 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:10:22,190 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:10:22,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:10:22,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:10:22,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:10:22,267 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:10:22,267 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:10:22,268 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c [2018-09-14 17:10:22,650 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7019787cb/6e91d6e58dba4d7581efb59eeafde2ce/FLAGf90bb969c [2018-09-14 17:10:23,029 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:10:23,030 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c [2018-09-14 17:10:23,057 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7019787cb/6e91d6e58dba4d7581efb59eeafde2ce/FLAGf90bb969c [2018-09-14 17:10:23,077 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7019787cb/6e91d6e58dba4d7581efb59eeafde2ce [2018-09-14 17:10:23,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:10:23,093 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:10:23,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:10:23,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:10:23,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:10:23,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:10:23" (1/1) ... [2018-09-14 17:10:23,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfb005e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:23, skipping insertion in model container [2018-09-14 17:10:23,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:10:23" (1/1) ... [2018-09-14 17:10:23,117 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:10:23,745 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:10:23,764 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:10:23,938 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:10:24,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24 WrapperNode [2018-09-14 17:10:24,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:10:24,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:10:24,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:10:24,009 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:10:24,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... [2018-09-14 17:10:24,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... [2018-09-14 17:10:24,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:10:24,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:10:24,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:10:24,173 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:10:24,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... [2018-09-14 17:10:24,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... [2018-09-14 17:10:24,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... [2018-09-14 17:10:24,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... [2018-09-14 17:10:24,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... [2018-09-14 17:10:24,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... [2018-09-14 17:10:24,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... [2018-09-14 17:10:24,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:10:24,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:10:24,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:10:24,580 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:10:24,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:10:24,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:10:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:10:24,640 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:10:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:10:24,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:10:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:10:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:10:24,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:10:28,720 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:10:28,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:10:28 BoogieIcfgContainer [2018-09-14 17:10:28,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:10:28,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:10:28,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:10:28,725 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:10:28,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:10:23" (1/3) ... [2018-09-14 17:10:28,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616984c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:10:28, skipping insertion in model container [2018-09-14 17:10:28,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:10:24" (2/3) ... [2018-09-14 17:10:28,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616984c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:10:28, skipping insertion in model container [2018-09-14 17:10:28,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:10:28" (3/3) ... [2018-09-14 17:10:28,729 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label11_true-unreach-call.c [2018-09-14 17:10:28,739 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:10:28,748 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:10:28,802 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:10:28,804 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:10:28,804 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:10:28,804 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:10:28,804 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:10:28,804 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:10:28,804 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:10:28,805 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:10:28,805 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:10:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-14 17:10:28,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-14 17:10:28,852 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:10:28,853 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:10:28,854 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:10:28,859 INFO L82 PathProgramCache]: Analyzing trace with hash 586215740, now seen corresponding path program 1 times [2018-09-14 17:10:28,861 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:10:28,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:28,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:10:28,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:28,909 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:10:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:10:29,363 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:10:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:10:29,400 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:10:29,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:10:29,401 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:10:29,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:10:29,423 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:10:29,424 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:10:29,426 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-09-14 17:10:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:10:31,905 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-09-14 17:10:31,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:10:31,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-09-14 17:10:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:10:31,931 INFO L225 Difference]: With dead ends: 782 [2018-09-14 17:10:31,931 INFO L226 Difference]: Without dead ends: 487 [2018-09-14 17:10:31,940 INFO L604 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 [2018-09-14 17:10:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-09-14 17:10:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-09-14 17:10:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-09-14 17:10:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-09-14 17:10:32,021 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 68 [2018-09-14 17:10:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:10:32,022 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-09-14 17:10:32,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:10:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-09-14 17:10:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-14 17:10:32,032 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:10:32,033 INFO L376 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, 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] [2018-09-14 17:10:32,033 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:10:32,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1561490343, now seen corresponding path program 1 times [2018-09-14 17:10:32,033 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:10:32,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:32,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:10:32,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:32,035 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:10:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:10:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:10:32,587 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:10:32,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-14 17:10:32,588 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:10:32,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:10:32,590 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:10:32,590 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:10:32,591 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-09-14 17:10:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:10:39,985 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-09-14 17:10:39,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:10:39,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2018-09-14 17:10:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:10:40,001 INFO L225 Difference]: With dead ends: 1760 [2018-09-14 17:10:40,001 INFO L226 Difference]: Without dead ends: 1284 [2018-09-14 17:10:40,007 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:10:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-09-14 17:10:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-09-14 17:10:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-09-14 17:10:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-09-14 17:10:40,095 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 143 [2018-09-14 17:10:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:10:40,097 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-09-14 17:10:40,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:10:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-09-14 17:10:40,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-14 17:10:40,107 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:10:40,107 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:10:40,108 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:10:40,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1636025592, now seen corresponding path program 1 times [2018-09-14 17:10:40,108 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:10:40,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:40,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:10:40,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:40,114 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:10:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:10:40,448 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:10:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 122 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:10:40,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:10:40,522 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:10:40,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:10:40,534 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:10:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:10:40,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:10:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 17:10:40,979 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:10:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 122 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:10:41,272 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:10:41,272 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:10:41,273 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:10:41,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:10:41,274 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:10:41,274 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:10:41,274 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 5 states. [2018-09-14 17:10:47,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:10:47,516 INFO L93 Difference]: Finished difference Result 3395 states and 5619 transitions. [2018-09-14 17:10:47,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:10:47,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2018-09-14 17:10:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:10:47,533 INFO L225 Difference]: With dead ends: 3395 [2018-09-14 17:10:47,533 INFO L226 Difference]: Without dead ends: 2364 [2018-09-14 17:10:47,540 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 427 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:10:47,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2018-09-14 17:10:47,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2323. [2018-09-14 17:10:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2018-09-14 17:10:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3627 transitions. [2018-09-14 17:10:47,618 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3627 transitions. Word has length 216 [2018-09-14 17:10:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:10:47,619 INFO L480 AbstractCegarLoop]: Abstraction has 2323 states and 3627 transitions. [2018-09-14 17:10:47,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:10:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3627 transitions. [2018-09-14 17:10:47,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-09-14 17:10:47,627 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:10:47,628 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:10:47,628 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:10:47,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1687745886, now seen corresponding path program 1 times [2018-09-14 17:10:47,628 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:10:47,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:47,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:10:47,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:10:47,630 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:10:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:10:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:10:48,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:10:48,626 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:10:48,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:10:48,643 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:10:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:10:48,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:20,563 WARN L178 SmtUtils]: Spent 29.38 s on a formula simplification. DAG size of input: 415 DAG size of output: 90 [2018-09-14 17:11:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:11:20,754 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:11:21,259 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:11:21,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-09-14 17:11:21,260 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:11:21,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:11:21,261 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:11:21,261 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2018-09-14 17:11:21,262 INFO L87 Difference]: Start difference. First operand 2323 states and 3627 transitions. Second operand 3 states. [2018-09-14 17:11:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:11:22,949 INFO L93 Difference]: Finished difference Result 6027 states and 9690 transitions. [2018-09-14 17:11:22,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:11:22,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-09-14 17:11:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:11:22,973 INFO L225 Difference]: With dead ends: 6027 [2018-09-14 17:11:22,973 INFO L226 Difference]: Without dead ends: 3710 [2018-09-14 17:11:22,987 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 519 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2018-09-14 17:11:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2018-09-14 17:11:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3705. [2018-09-14 17:11:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3705 states. [2018-09-14 17:11:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5492 transitions. [2018-09-14 17:11:23,080 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5492 transitions. Word has length 260 [2018-09-14 17:11:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:11:23,081 INFO L480 AbstractCegarLoop]: Abstraction has 3705 states and 5492 transitions. [2018-09-14 17:11:23,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:11:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5492 transitions. [2018-09-14 17:11:23,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-14 17:11:23,096 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:11:23,096 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:11:23,097 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:11:23,097 INFO L82 PathProgramCache]: Analyzing trace with hash -307629149, now seen corresponding path program 1 times [2018-09-14 17:11:23,097 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:11:23,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:23,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:23,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:23,098 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:11:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-14 17:11:23,369 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:11:23,369 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:11:23,369 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:11:23,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:11:23,370 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:11:23,370 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:11:23,371 INFO L87 Difference]: Start difference. First operand 3705 states and 5492 transitions. Second operand 3 states. [2018-09-14 17:11:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:11:27,065 INFO L93 Difference]: Finished difference Result 8367 states and 12794 transitions. [2018-09-14 17:11:27,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:11:27,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2018-09-14 17:11:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:11:27,096 INFO L225 Difference]: With dead ends: 8367 [2018-09-14 17:11:27,096 INFO L226 Difference]: Without dead ends: 4668 [2018-09-14 17:11:27,122 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:11:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4668 states. [2018-09-14 17:11:27,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4668 to 4666. [2018-09-14 17:11:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4666 states. [2018-09-14 17:11:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4666 states to 4666 states and 6844 transitions. [2018-09-14 17:11:27,313 INFO L78 Accepts]: Start accepts. Automaton has 4666 states and 6844 transitions. Word has length 286 [2018-09-14 17:11:27,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:11:27,314 INFO L480 AbstractCegarLoop]: Abstraction has 4666 states and 6844 transitions. [2018-09-14 17:11:27,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:11:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4666 states and 6844 transitions. [2018-09-14 17:11:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-09-14 17:11:27,330 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:11:27,330 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:11:27,331 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:11:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash 748491532, now seen corresponding path program 1 times [2018-09-14 17:11:27,331 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:11:27,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:27,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:27,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:27,332 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:11:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-14 17:11:27,622 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:11:27,622 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:11:27,622 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:11:27,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:11:27,623 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:11:27,623 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:11:27,623 INFO L87 Difference]: Start difference. First operand 4666 states and 6844 transitions. Second operand 3 states. [2018-09-14 17:11:29,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:11:29,288 INFO L93 Difference]: Finished difference Result 12915 states and 19647 transitions. [2018-09-14 17:11:29,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:11:29,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2018-09-14 17:11:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:11:29,330 INFO L225 Difference]: With dead ends: 12915 [2018-09-14 17:11:29,330 INFO L226 Difference]: Without dead ends: 8255 [2018-09-14 17:11:29,361 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:11:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2018-09-14 17:11:29,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 8054. [2018-09-14 17:11:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8054 states. [2018-09-14 17:11:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8054 states to 8054 states and 11729 transitions. [2018-09-14 17:11:29,559 INFO L78 Accepts]: Start accepts. Automaton has 8054 states and 11729 transitions. Word has length 291 [2018-09-14 17:11:29,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:11:29,560 INFO L480 AbstractCegarLoop]: Abstraction has 8054 states and 11729 transitions. [2018-09-14 17:11:29,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:11:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 8054 states and 11729 transitions. [2018-09-14 17:11:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-09-14 17:11:29,599 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:11:29,600 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:11:29,600 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:11:29,600 INFO L82 PathProgramCache]: Analyzing trace with hash 2041497929, now seen corresponding path program 1 times [2018-09-14 17:11:29,601 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:11:29,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:29,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:29,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:29,602 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:11:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 233 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:11:30,039 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:11:30,039 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:11:30,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:30,047 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:11:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:30,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-09-14 17:11:30,440 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-09-14 17:11:30,757 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:11:30,757 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:11:30,758 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:11:30,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:11:30,758 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:11:30,760 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:11:30,761 INFO L87 Difference]: Start difference. First operand 8054 states and 11729 transitions. Second operand 5 states. [2018-09-14 17:11:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:11:33,709 INFO L93 Difference]: Finished difference Result 21436 states and 31771 transitions. [2018-09-14 17:11:33,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:11:33,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2018-09-14 17:11:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:11:33,774 INFO L225 Difference]: With dead ends: 21436 [2018-09-14 17:11:33,774 INFO L226 Difference]: Without dead ends: 13388 [2018-09-14 17:11:33,816 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 594 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:11:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13388 states. [2018-09-14 17:11:34,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13388 to 12991. [2018-09-14 17:11:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12991 states. [2018-09-14 17:11:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12991 states to 12991 states and 18262 transitions. [2018-09-14 17:11:34,125 INFO L78 Accepts]: Start accepts. Automaton has 12991 states and 18262 transitions. Word has length 300 [2018-09-14 17:11:34,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:11:34,125 INFO L480 AbstractCegarLoop]: Abstraction has 12991 states and 18262 transitions. [2018-09-14 17:11:34,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:11:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 12991 states and 18262 transitions. [2018-09-14 17:11:34,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-09-14 17:11:34,170 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:11:34,170 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:11:34,170 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:11:34,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1761643877, now seen corresponding path program 1 times [2018-09-14 17:11:34,171 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:11:34,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:34,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:34,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:34,172 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:11:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-14 17:11:34,604 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:11:34,604 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:11:34,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:34,612 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:11:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:34,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:11:34,939 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:11:35,285 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:11:35,286 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:11:35,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:35,303 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:11:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:35,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:11:35,754 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:11:36,084 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:11:36,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-09-14 17:11:36,084 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:11:36,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 17:11:36,085 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 17:11:36,085 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:11:36,086 INFO L87 Difference]: Start difference. First operand 12991 states and 18262 transitions. Second operand 10 states. [2018-09-14 17:11:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:11:51,832 INFO L93 Difference]: Finished difference Result 39608 states and 66447 transitions. [2018-09-14 17:11:51,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-14 17:11:51,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 307 [2018-09-14 17:11:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:11:52,015 INFO L225 Difference]: With dead ends: 39608 [2018-09-14 17:11:52,015 INFO L226 Difference]: Without dead ends: 26623 [2018-09-14 17:11:52,138 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1335 GetRequests, 1250 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1109, Invalid=6031, Unknown=0, NotChecked=0, Total=7140 [2018-09-14 17:11:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26623 states. [2018-09-14 17:11:52,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26623 to 25262. [2018-09-14 17:11:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25262 states. [2018-09-14 17:11:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25262 states to 25262 states and 34735 transitions. [2018-09-14 17:11:52,945 INFO L78 Accepts]: Start accepts. Automaton has 25262 states and 34735 transitions. Word has length 307 [2018-09-14 17:11:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:11:52,946 INFO L480 AbstractCegarLoop]: Abstraction has 25262 states and 34735 transitions. [2018-09-14 17:11:52,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 17:11:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 25262 states and 34735 transitions. [2018-09-14 17:11:53,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-09-14 17:11:53,023 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:11:53,024 INFO L376 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, 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, 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] [2018-09-14 17:11:53,024 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:11:53,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1855711514, now seen corresponding path program 1 times [2018-09-14 17:11:53,025 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:11:53,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:53,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:53,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:53,027 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:11:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:11:53,960 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:11:53,960 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:11:53,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:53,973 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:11:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:54,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:11:54,294 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:11:54,736 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:11:54,737 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:11:54,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:54,752 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:11:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:55,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 278 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:11:55,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:11:55,353 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:11:55,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 8 [2018-09-14 17:11:55,354 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:11:55,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:11:55,356 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:11:55,356 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:11:55,356 INFO L87 Difference]: Start difference. First operand 25262 states and 34735 transitions. Second operand 6 states. [2018-09-14 17:11:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:11:57,632 INFO L93 Difference]: Finished difference Result 49802 states and 71326 transitions. [2018-09-14 17:11:57,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:11:57,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2018-09-14 17:11:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:11:57,729 INFO L225 Difference]: With dead ends: 49802 [2018-09-14 17:11:57,730 INFO L226 Difference]: Without dead ends: 25053 [2018-09-14 17:11:57,796 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1558 GetRequests, 1544 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:11:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25053 states. [2018-09-14 17:11:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25053 to 23496. [2018-09-14 17:11:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23496 states. [2018-09-14 17:11:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23496 states to 23496 states and 30479 transitions. [2018-09-14 17:11:58,254 INFO L78 Accepts]: Start accepts. Automaton has 23496 states and 30479 transitions. Word has length 387 [2018-09-14 17:11:58,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:11:58,254 INFO L480 AbstractCegarLoop]: Abstraction has 23496 states and 30479 transitions. [2018-09-14 17:11:58,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:11:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 23496 states and 30479 transitions. [2018-09-14 17:11:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-09-14 17:11:58,293 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:11:58,293 INFO L376 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, 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, 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] [2018-09-14 17:11:58,293 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:11:58,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1034638058, now seen corresponding path program 1 times [2018-09-14 17:11:58,294 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:11:58,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:58,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:58,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:11:58,295 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:11:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 78 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-14 17:11:58,606 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:11:58,606 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:11:58,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:58,616 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:11:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:58,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 17:11:58,886 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 78 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-14 17:11:59,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:11:59,113 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:11:59,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:11:59,129 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:11:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:11:59,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:11:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 17:11:59,714 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:11:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 78 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-14 17:11:59,973 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:11:59,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-14 17:11:59,974 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:11:59,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:11:59,975 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:11:59,975 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:11:59,975 INFO L87 Difference]: Start difference. First operand 23496 states and 30479 transitions. Second operand 9 states. [2018-09-14 17:12:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:04,837 INFO L93 Difference]: Finished difference Result 47879 states and 63577 transitions. [2018-09-14 17:12:04,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 17:12:04,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 394 [2018-09-14 17:12:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:04,907 INFO L225 Difference]: With dead ends: 47879 [2018-09-14 17:12:04,907 INFO L226 Difference]: Without dead ends: 24896 [2018-09-14 17:12:04,985 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1592 GetRequests, 1569 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:12:05,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24896 states. [2018-09-14 17:12:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24896 to 24800. [2018-09-14 17:12:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24800 states. [2018-09-14 17:12:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24800 states to 24800 states and 31378 transitions. [2018-09-14 17:12:05,443 INFO L78 Accepts]: Start accepts. Automaton has 24800 states and 31378 transitions. Word has length 394 [2018-09-14 17:12:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:05,443 INFO L480 AbstractCegarLoop]: Abstraction has 24800 states and 31378 transitions. [2018-09-14 17:12:05,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:12:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24800 states and 31378 transitions. [2018-09-14 17:12:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-09-14 17:12:05,493 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:05,494 INFO L376 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, 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, 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] [2018-09-14 17:12:05,494 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:05,494 INFO L82 PathProgramCache]: Analyzing trace with hash -788927721, now seen corresponding path program 1 times [2018-09-14 17:12:05,495 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:05,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:05,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:05,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:05,496 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 189 proven. 217 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-14 17:12:05,922 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:05,922 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:12:05,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:05,930 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:06,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 343 proven. 107 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 17:12:08,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 294 proven. 107 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-14 17:12:09,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:12:09,421 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:12:09,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:09,437 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:12:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:09,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:12:10,592 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-09-14 17:12:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 343 proven. 107 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 17:12:12,849 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:12:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 294 proven. 107 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-14 17:12:13,084 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:12:13,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5, 8, 5] total 15 [2018-09-14 17:12:13,085 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:12:13,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 17:12:13,086 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 17:12:13,087 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=150, Unknown=3, NotChecked=0, Total=210 [2018-09-14 17:12:13,087 INFO L87 Difference]: Start difference. First operand 24800 states and 31378 transitions. Second operand 10 states. [2018-09-14 17:12:15,086 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-14 17:13:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:30,208 INFO L93 Difference]: Finished difference Result 66267 states and 91508 transitions. [2018-09-14 17:13:30,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-14 17:13:30,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 423 [2018-09-14 17:13:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:30,414 INFO L225 Difference]: With dead ends: 66267 [2018-09-14 17:13:30,414 INFO L226 Difference]: Without dead ends: 41980 [2018-09-14 17:13:30,501 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1729 GetRequests, 1694 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=209, Invalid=656, Unknown=5, NotChecked=0, Total=870 [2018-09-14 17:13:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41980 states. [2018-09-14 17:13:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41980 to 41287. [2018-09-14 17:13:31,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41287 states. [2018-09-14 17:13:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41287 states to 41287 states and 56916 transitions. [2018-09-14 17:13:31,785 INFO L78 Accepts]: Start accepts. Automaton has 41287 states and 56916 transitions. Word has length 423 [2018-09-14 17:13:31,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:31,786 INFO L480 AbstractCegarLoop]: Abstraction has 41287 states and 56916 transitions. [2018-09-14 17:13:31,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 17:13:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 41287 states and 56916 transitions. [2018-09-14 17:13:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-09-14 17:13:31,860 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:31,861 INFO L376 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, 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, 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] [2018-09-14 17:13:31,861 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash 9576515, now seen corresponding path program 1 times [2018-09-14 17:13:31,861 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:31,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:31,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:31,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:31,862 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:13:32,248 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:32,248 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:13:32,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:32,257 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:32,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:13:32,524 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:13:32,763 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:32,763 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:13:32,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:32,779 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:33,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:13:33,131 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:13:33,327 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:13:33,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-14 17:13:33,327 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:13:33,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:13:33,328 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:13:33,328 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:13:33,329 INFO L87 Difference]: Start difference. First operand 41287 states and 56916 transitions. Second operand 7 states. [2018-09-14 17:13:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:38,518 INFO L93 Difference]: Finished difference Result 87864 states and 122111 transitions. [2018-09-14 17:13:38,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 17:13:38,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2018-09-14 17:13:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:38,727 INFO L225 Difference]: With dead ends: 87864 [2018-09-14 17:13:38,727 INFO L226 Difference]: Without dead ends: 47090 [2018-09-14 17:13:38,861 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1710 GetRequests, 1694 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:13:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47090 states. [2018-09-14 17:13:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47090 to 46827. [2018-09-14 17:13:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46827 states. [2018-09-14 17:13:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46827 states to 46827 states and 64154 transitions. [2018-09-14 17:13:39,780 INFO L78 Accepts]: Start accepts. Automaton has 46827 states and 64154 transitions. Word has length 424 [2018-09-14 17:13:39,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:39,781 INFO L480 AbstractCegarLoop]: Abstraction has 46827 states and 64154 transitions. [2018-09-14 17:13:39,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:13:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 46827 states and 64154 transitions. [2018-09-14 17:13:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-09-14 17:13:39,854 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:39,854 INFO L376 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, 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, 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] [2018-09-14 17:13:39,855 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:39,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1266858251, now seen corresponding path program 1 times [2018-09-14 17:13:39,855 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:39,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:39,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:39,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:39,856 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:13:40,717 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:40,718 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:13:40,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:40,725 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:40,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 196 proven. 4 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-09-14 17:13:41,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 196 proven. 216 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:13:42,108 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:42,109 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:13:42,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:42,125 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:42,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 196 proven. 4 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-09-14 17:13:42,523 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 196 proven. 216 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:13:42,905 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:13:42,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8, 7, 8] total 21 [2018-09-14 17:13:42,906 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:13:42,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-14 17:13:42,907 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-14 17:13:42,907 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:13:42,908 INFO L87 Difference]: Start difference. First operand 46827 states and 64154 transitions. Second operand 16 states. [2018-09-14 17:13:45,662 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-09-14 17:13:53,707 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-09-14 17:13:54,162 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-09-14 17:13:56,093 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-09-14 17:13:57,729 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-09-14 17:13:59,234 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-09-14 17:14:05,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:14:05,220 INFO L93 Difference]: Finished difference Result 110508 states and 205813 transitions. [2018-09-14 17:14:05,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-14 17:14:05,220 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 432 [2018-09-14 17:14:05,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:14:05,939 INFO L225 Difference]: With dead ends: 110508 [2018-09-14 17:14:05,940 INFO L226 Difference]: Without dead ends: 64194 [2018-09-14 17:14:06,247 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1861 GetRequests, 1767 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2769 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1627, Invalid=7115, Unknown=0, NotChecked=0, Total=8742 [2018-09-14 17:14:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64194 states. [2018-09-14 17:14:08,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64194 to 60114. [2018-09-14 17:14:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60114 states. [2018-09-14 17:14:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60114 states to 60114 states and 85783 transitions. [2018-09-14 17:14:08,914 INFO L78 Accepts]: Start accepts. Automaton has 60114 states and 85783 transitions. Word has length 432 [2018-09-14 17:14:08,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:14:08,915 INFO L480 AbstractCegarLoop]: Abstraction has 60114 states and 85783 transitions. [2018-09-14 17:14:08,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-14 17:14:08,915 INFO L276 IsEmpty]: Start isEmpty. Operand 60114 states and 85783 transitions. [2018-09-14 17:14:09,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-09-14 17:14:09,123 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:14:09,123 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-14 17:14:09,124 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:14:09,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1468541688, now seen corresponding path program 1 times [2018-09-14 17:14:09,124 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:14:09,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:09,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:09,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:09,125 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:14:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2018-09-14 17:14:09,565 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:09,565 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:14:09,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:09,580 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:09,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2018-09-14 17:14:09,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2018-09-14 17:14:10,454 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:14:10,455 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-14 17:14:10,455 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:14:10,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:14:10,456 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:14:10,456 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:14:10,456 INFO L87 Difference]: Start difference. First operand 60114 states and 85783 transitions. Second operand 3 states. [2018-09-14 17:14:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:14:13,479 INFO L93 Difference]: Finished difference Result 115896 states and 167745 transitions. [2018-09-14 17:14:13,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:14:13,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 527 [2018-09-14 17:14:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:14:13,682 INFO L225 Difference]: With dead ends: 115896 [2018-09-14 17:14:13,682 INFO L226 Difference]: Without dead ends: 44694 [2018-09-14 17:14:13,927 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:14:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44694 states. [2018-09-14 17:14:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44694 to 44660. [2018-09-14 17:14:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44660 states. [2018-09-14 17:14:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44660 states to 44660 states and 60063 transitions. [2018-09-14 17:14:14,844 INFO L78 Accepts]: Start accepts. Automaton has 44660 states and 60063 transitions. Word has length 527 [2018-09-14 17:14:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:14:14,845 INFO L480 AbstractCegarLoop]: Abstraction has 44660 states and 60063 transitions. [2018-09-14 17:14:14,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:14:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 44660 states and 60063 transitions. [2018-09-14 17:14:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-09-14 17:14:14,937 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:14:14,937 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-14 17:14:14,938 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:14:14,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1970638289, now seen corresponding path program 1 times [2018-09-14 17:14:14,938 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:14:14,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:14,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:14,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:14,939 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:14:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:15,430 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-14 17:14:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 561 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:14:16,161 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:16,161 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:14:16,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:16,171 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:16,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 561 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:14:17,517 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:17,846 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2018-09-14 17:14:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 561 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:14:18,706 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:18,706 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:14:18,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:18,725 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:19,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 561 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:14:20,337 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:20,451 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2018-09-14 17:14:20,757 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2018-09-14 17:14:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 559 proven. 14 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-14 17:14:21,816 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:14:21,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8, 8, 12] total 30 [2018-09-14 17:14:21,817 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:14:21,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:14:21,818 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:14:21,818 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2018-09-14 17:14:21,819 INFO L87 Difference]: Start difference. First operand 44660 states and 60063 transitions. Second operand 15 states. [2018-09-14 17:14:23,772 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-09-14 17:14:24,753 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 Received shutdown request... [2018-09-14 17:14:28,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-14 17:14:28,466 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:14:28,473 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:14:28,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:14:28 BoogieIcfgContainer [2018-09-14 17:14:28,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:14:28,474 INFO L168 Benchmark]: Toolchain (without parser) took 245383.73 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 68.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-14 17:14:28,475 INFO L168 Benchmark]: CDTParser took 1.26 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. [2018-09-14 17:14:28,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 913.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:14:28,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 164.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:14:28,477 INFO L168 Benchmark]: Boogie Preprocessor took 406.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 821.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -944.6 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:14:28,477 INFO L168 Benchmark]: RCFGBuilder took 4141.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 171.0 MB). Peak memory consumption was 171.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:14:28,478 INFO L168 Benchmark]: TraceAbstraction took 239751.27 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 746.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-14 17:14:28,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26 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 913.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 164.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 406.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 821.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -944.6 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4141.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 171.0 MB). Peak memory consumption was 171.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239751.27 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 746.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while BasicCegarLoop was constructing difference of abstraction (44660states) and FLOYD_HOARE automaton (currently 24 states, 15 states before enhancement), while ReachableStatesComputation was computing reachable states (14323 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 239.6s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 166.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3301 SDtfs, 21223 SDslu, 3622 SDs, 0 SdLazy, 40000 SolverSat, 8379 SolverUnsat, 35 SolverUnknown, 0 SolverNotchecked, 133.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14620 GetRequests, 14249 SyntacticMatches, 42 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 55.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60114occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 8982 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 57.0s InterpolantComputationTime, 12097 NumberOfCodeBlocks, 12097 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 19151 ConstructedInterpolants, 5 QuantifiedInterpolants, 32021206 SizeOfPredicates, 40 NumberOfNonLiveVariables, 11518 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 51 InterpolantComputations, 8 PerfectInterpolantSequences, 20795/22766 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-14-28-496.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-14-28-496.csv Completed graceful shutdown