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/Problem13_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:32:09,173 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:32:09,175 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:32:09,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:32:09,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:32:09,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:32:09,190 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:32:09,192 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:32:09,193 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:32:09,194 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:32:09,195 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:32:09,196 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:32:09,197 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:32:09,198 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:32:09,202 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:32:09,203 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:32:09,204 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:32:09,215 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:32:09,217 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:32:09,222 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:32:09,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:32:09,227 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:32:09,231 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:32:09,231 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:32:09,231 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:32:09,233 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:32:09,234 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:32:09,235 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:32:09,236 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:32:09,237 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:32:09,237 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:32:09,238 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:32:09,238 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:32:09,241 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:32:09,242 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:32:09,243 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:32:09,243 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 17:32:09,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:32:09,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:32:09,273 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:32:09,273 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:32:09,274 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:32:09,274 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:32:09,275 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:32:09,275 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:32:09,275 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:32:09,275 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:32:09,275 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:32:09,276 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:32:09,278 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:32:09,278 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:32:09,278 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:32:09,278 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:32:09,278 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:32:09,279 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:32:09,279 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:32:09,279 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:32:09,279 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:32:09,281 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:32:09,281 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:32:09,281 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:32:09,281 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:32:09,282 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:32:09,282 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:32:09,282 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:32:09,282 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:32:09,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:32:09,283 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:32:09,283 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:32:09,283 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:32:09,352 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:32:09,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:32:09,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:32:09,372 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:32:09,373 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:32:09,374 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-09-14 17:32:09,739 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d4ba5c5/c49702cbd7164c669d2df2dd08456aa5/FLAG3d3c3b151 [2018-09-14 17:32:10,254 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:32:10,255 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-09-14 17:32:10,287 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d4ba5c5/c49702cbd7164c669d2df2dd08456aa5/FLAG3d3c3b151 [2018-09-14 17:32:10,307 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d4ba5c5/c49702cbd7164c669d2df2dd08456aa5 [2018-09-14 17:32:10,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:32:10,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:32:10,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:32:10,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:32:10,334 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:32:10,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:32:10" (1/1) ... [2018-09-14 17:32:10,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a64aa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:10, skipping insertion in model container [2018-09-14 17:32:10,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:32:10" (1/1) ... [2018-09-14 17:32:10,352 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:32:11,743 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:32:11,765 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:32:12,545 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:32:12,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12 WrapperNode [2018-09-14 17:32:12,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:32:12,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:32:12,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:32:12,923 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:32:12,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (1/1) ... [2018-09-14 17:32:13,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (1/1) ... [2018-09-14 17:32:13,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:32:13,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:32:13,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:32:13,219 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:32:14,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (1/1) ... [2018-09-14 17:32:14,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (1/1) ... [2018-09-14 17:32:14,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (1/1) ... [2018-09-14 17:32:14,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (1/1) ... [2018-09-14 17:32:14,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (1/1) ... [2018-09-14 17:32:14,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (1/1) ... [2018-09-14 17:32:14,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (1/1) ... [2018-09-14 17:32:14,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:32:14,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:32:14,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:32:14,594 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:32:14,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (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 17:32:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:32:14,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:32:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:32:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:32:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:32:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:32:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:32:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:32:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:32:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:32:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:32:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:32:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:32:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:32:25,550 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:32:25,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:32:25 BoogieIcfgContainer [2018-09-14 17:32:25,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:32:25,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:32:25,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:32:25,555 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:32:25,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:32:10" (1/3) ... [2018-09-14 17:32:25,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248a9bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:32:25, skipping insertion in model container [2018-09-14 17:32:25,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:12" (2/3) ... [2018-09-14 17:32:25,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248a9bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:32:25, skipping insertion in model container [2018-09-14 17:32:25,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:32:25" (3/3) ... [2018-09-14 17:32:25,560 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label33_true-unreach-call.c [2018-09-14 17:32:25,570 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:32:25,583 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:32:25,658 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:32:25,659 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:32:25,659 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:32:25,659 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:32:25,659 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:32:25,659 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:32:25,659 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:32:25,660 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:32:25,660 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:32:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:32:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-14 17:32:25,714 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:25,716 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] [2018-09-14 17:32:25,717 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:25,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1221067980, now seen corresponding path program 1 times [2018-09-14 17:32:25,725 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:25,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:25,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:25,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:25,778 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:26,215 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 17:32:26,218 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:26,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:32:26,218 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:26,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:32:26,238 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:32:26,238 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:32:26,241 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-14 17:32:41,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:41,544 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-09-14 17:32:41,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:32:41,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-09-14 17:32:41,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:41,603 INFO L225 Difference]: With dead ends: 3968 [2018-09-14 17:32:41,603 INFO L226 Difference]: Without dead ends: 2842 [2018-09-14 17:32:41,614 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:32:41,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-09-14 17:32:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-09-14 17:32:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-09-14 17:32:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-09-14 17:32:41,788 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 42 [2018-09-14 17:32:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:41,789 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-09-14 17:32:41,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:32:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-09-14 17:32:41,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-14 17:32:41,798 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:41,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:41,798 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:41,799 INFO L82 PathProgramCache]: Analyzing trace with hash 894022032, now seen corresponding path program 1 times [2018-09-14 17:32:41,799 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:41,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:41,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:41,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:41,803 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:42,107 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:42,107 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:32:42,107 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:42,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:32:42,110 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:32:42,110 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:32:42,111 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-09-14 17:32:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:58,602 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-09-14 17:32:58,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:32:58,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-09-14 17:32:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:58,627 INFO L225 Difference]: With dead ends: 5673 [2018-09-14 17:32:58,627 INFO L226 Difference]: Without dead ends: 3698 [2018-09-14 17:32:58,634 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:32:58,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-09-14 17:32:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-09-14 17:32:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-09-14 17:32:58,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5871 transitions. [2018-09-14 17:32:58,752 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5871 transitions. Word has length 112 [2018-09-14 17:32:58,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:58,752 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5871 transitions. [2018-09-14 17:32:58,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:32:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5871 transitions. [2018-09-14 17:32:58,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-14 17:32:58,758 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:58,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:58,759 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:58,759 INFO L82 PathProgramCache]: Analyzing trace with hash -463864276, now seen corresponding path program 1 times [2018-09-14 17:32:58,759 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:58,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:58,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:58,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:58,761 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:59,045 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:59,045 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:32:59,045 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:59,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:32:59,046 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:32:59,046 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:32:59,046 INFO L87 Difference]: Start difference. First operand 3687 states and 5871 transitions. Second operand 5 states. [2018-09-14 17:33:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:12,705 INFO L93 Difference]: Finished difference Result 10963 states and 17868 transitions. [2018-09-14 17:33:12,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:33:12,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-09-14 17:33:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:12,741 INFO L225 Difference]: With dead ends: 10963 [2018-09-14 17:33:12,741 INFO L226 Difference]: Without dead ends: 7282 [2018-09-14 17:33:12,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:33:12,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-09-14 17:33:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-09-14 17:33:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-09-14 17:33:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10522 transitions. [2018-09-14 17:33:12,926 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10522 transitions. Word has length 114 [2018-09-14 17:33:12,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:12,926 INFO L480 AbstractCegarLoop]: Abstraction has 7175 states and 10522 transitions. [2018-09-14 17:33:12,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:33:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10522 transitions. [2018-09-14 17:33:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-14 17:33:12,931 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:12,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:33:12,931 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:12,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1460284852, now seen corresponding path program 1 times [2018-09-14 17:33:12,932 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:12,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:12,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:12,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:12,933 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:13,199 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:33:13,199 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:33:13,199 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:13,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:33:13,202 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:33:13,202 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:33:13,203 INFO L87 Difference]: Start difference. First operand 7175 states and 10522 transitions. Second operand 4 states. [2018-09-14 17:33:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:25,824 INFO L93 Difference]: Finished difference Result 27677 states and 43236 transitions. [2018-09-14 17:33:25,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:33:25,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2018-09-14 17:33:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:25,932 INFO L225 Difference]: With dead ends: 27677 [2018-09-14 17:33:25,932 INFO L226 Difference]: Without dead ends: 20508 [2018-09-14 17:33:25,974 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:33:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20508 states. [2018-09-14 17:33:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20508 to 20471. [2018-09-14 17:33:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20471 states. [2018-09-14 17:33:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20471 states to 20471 states and 29119 transitions. [2018-09-14 17:33:26,465 INFO L78 Accepts]: Start accepts. Automaton has 20471 states and 29119 transitions. Word has length 158 [2018-09-14 17:33:26,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:26,466 INFO L480 AbstractCegarLoop]: Abstraction has 20471 states and 29119 transitions. [2018-09-14 17:33:26,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:33:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 20471 states and 29119 transitions. [2018-09-14 17:33:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-14 17:33:26,477 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:26,478 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:33:26,478 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:26,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1058546082, now seen corresponding path program 1 times [2018-09-14 17:33:26,479 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:26,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:26,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:26,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:26,480 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:26,814 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:33:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:27,002 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:27,002 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 17:33:27,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:27,011 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:27,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:33:27,404 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-09-14 17:33:27,930 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:33:27,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-14 17:33:27,930 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:27,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:33:27,931 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:33:27,932 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:33:27,932 INFO L87 Difference]: Start difference. First operand 20471 states and 29119 transitions. Second operand 3 states. [2018-09-14 17:33:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:39,017 INFO L93 Difference]: Finished difference Result 50722 states and 73172 transitions. [2018-09-14 17:33:39,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:33:39,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2018-09-14 17:33:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:39,181 INFO L225 Difference]: With dead ends: 50722 [2018-09-14 17:33:39,181 INFO L226 Difference]: Without dead ends: 30257 [2018-09-14 17:33:39,258 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:33:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30257 states. [2018-09-14 17:33:39,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30257 to 30257. [2018-09-14 17:33:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30257 states. [2018-09-14 17:33:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30257 states to 30257 states and 41098 transitions. [2018-09-14 17:33:40,002 INFO L78 Accepts]: Start accepts. Automaton has 30257 states and 41098 transitions. Word has length 273 [2018-09-14 17:33:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:40,003 INFO L480 AbstractCegarLoop]: Abstraction has 30257 states and 41098 transitions. [2018-09-14 17:33:40,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:33:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 30257 states and 41098 transitions. [2018-09-14 17:33:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-14 17:33:40,012 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:40,013 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:33:40,013 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:40,014 INFO L82 PathProgramCache]: Analyzing trace with hash -626093121, now seen corresponding path program 1 times [2018-09-14 17:33:40,014 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:40,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:40,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:40,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:40,015 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 149 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:33:40,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:40,464 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 17:33:40,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:40,478 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:40,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:33:40,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:33:41,274 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:33:41,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-09-14 17:33:41,274 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:41,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:33:41,275 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:33:41,276 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:33:41,276 INFO L87 Difference]: Start difference. First operand 30257 states and 41098 transitions. Second operand 3 states. [2018-09-14 17:33:49,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:49,291 INFO L93 Difference]: Finished difference Result 66167 states and 90705 transitions. [2018-09-14 17:33:49,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:33:49,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 282 [2018-09-14 17:33:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:49,396 INFO L225 Difference]: With dead ends: 66167 [2018-09-14 17:33:49,396 INFO L226 Difference]: Without dead ends: 35916 [2018-09-14 17:33:49,467 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 564 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:33:49,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35916 states. [2018-09-14 17:33:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35916 to 35111. [2018-09-14 17:33:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35111 states. [2018-09-14 17:33:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35111 states to 35111 states and 44575 transitions. [2018-09-14 17:33:50,138 INFO L78 Accepts]: Start accepts. Automaton has 35111 states and 44575 transitions. Word has length 282 [2018-09-14 17:33:50,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:50,144 INFO L480 AbstractCegarLoop]: Abstraction has 35111 states and 44575 transitions. [2018-09-14 17:33:50,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:33:50,145 INFO L276 IsEmpty]: Start isEmpty. Operand 35111 states and 44575 transitions. [2018-09-14 17:33:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-09-14 17:33:50,167 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:50,168 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:33:50,168 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:50,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1699353600, now seen corresponding path program 1 times [2018-09-14 17:33:50,169 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:50,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:50,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:50,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:50,170 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:50,568 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:33:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:51,085 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:51,085 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 17:33:51,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:51,103 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:51,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:51,994 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:52,459 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:52,460 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:33:52,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:52,487 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:52,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:53,464 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:53,978 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:33:53,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 17:33:53,978 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:33:53,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:33:53,980 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:33:53,980 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:33:53,980 INFO L87 Difference]: Start difference. First operand 35111 states and 44575 transitions. Second operand 9 states. [2018-09-14 17:34:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:13,503 INFO L93 Difference]: Finished difference Result 102146 states and 140470 transitions. [2018-09-14 17:34:13,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-14 17:34:13,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 384 [2018-09-14 17:34:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:13,746 INFO L225 Difference]: With dead ends: 102146 [2018-09-14 17:34:13,746 INFO L226 Difference]: Without dead ends: 67041 [2018-09-14 17:34:13,838 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1571 GetRequests, 1535 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=283, Invalid=977, Unknown=0, NotChecked=0, Total=1260 [2018-09-14 17:34:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67041 states. [2018-09-14 17:34:14,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67041 to 63290. [2018-09-14 17:34:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63290 states. [2018-09-14 17:34:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63290 states to 63290 states and 76857 transitions. [2018-09-14 17:34:14,997 INFO L78 Accepts]: Start accepts. Automaton has 63290 states and 76857 transitions. Word has length 384 [2018-09-14 17:34:14,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:14,998 INFO L480 AbstractCegarLoop]: Abstraction has 63290 states and 76857 transitions. [2018-09-14 17:34:14,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:34:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 63290 states and 76857 transitions. [2018-09-14 17:34:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-14 17:34:15,024 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:15,025 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:34:15,025 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:15,025 INFO L82 PathProgramCache]: Analyzing trace with hash 208769225, now seen corresponding path program 1 times [2018-09-14 17:34:15,025 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:15,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:15,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:15,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:15,027 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:15,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:15,508 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:34:15,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:15,517 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:15,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:15,800 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:16,411 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:16,411 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:34:16,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:16,427 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:16,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:16,997 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:17,209 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:34:17,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:34:17,209 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:34:17,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:34:17,210 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:34:17,210 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:34:17,211 INFO L87 Difference]: Start difference. First operand 63290 states and 76857 transitions. Second operand 9 states. [2018-09-14 17:34:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:43,947 INFO L93 Difference]: Finished difference Result 176942 states and 246079 transitions. [2018-09-14 17:34:43,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-14 17:34:43,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 406 [2018-09-14 17:34:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:44,575 INFO L225 Difference]: With dead ends: 176942 [2018-09-14 17:34:44,575 INFO L226 Difference]: Without dead ends: 112829 [2018-09-14 17:34:44,799 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1658 GetRequests, 1628 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2018-09-14 17:34:44,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112829 states. [2018-09-14 17:34:46,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112829 to 111698. [2018-09-14 17:34:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111698 states. [2018-09-14 17:34:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111698 states to 111698 states and 135631 transitions. [2018-09-14 17:34:47,254 INFO L78 Accepts]: Start accepts. Automaton has 111698 states and 135631 transitions. Word has length 406 [2018-09-14 17:34:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:47,255 INFO L480 AbstractCegarLoop]: Abstraction has 111698 states and 135631 transitions. [2018-09-14 17:34:47,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:34:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 111698 states and 135631 transitions. [2018-09-14 17:34:47,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-09-14 17:34:47,299 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:47,300 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:34:47,300 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:47,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1133570023, now seen corresponding path program 1 times [2018-09-14 17:34:47,300 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:47,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:47,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:47,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:47,301 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 187 proven. 78 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-14 17:34:48,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:48,255 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:34:48,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:48,266 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:48,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-14 17:34:48,538 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-14 17:34:48,664 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:34:48,664 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-09-14 17:34:48,664 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:34:48,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:34:48,665 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:34:48,665 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:34:48,666 INFO L87 Difference]: Start difference. First operand 111698 states and 135631 transitions. Second operand 3 states. [2018-09-14 17:34:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:53,183 INFO L93 Difference]: Finished difference Result 221651 states and 269483 transitions. [2018-09-14 17:34:53,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:34:53,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 407 [2018-09-14 17:34:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:53,563 INFO L225 Difference]: With dead ends: 221651 [2018-09-14 17:34:53,564 INFO L226 Difference]: Without dead ends: 110833 [2018-09-14 17:34:53,783 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 813 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:34:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110833 states. [2018-09-14 17:34:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110833 to 110833. [2018-09-14 17:34:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110833 states. [2018-09-14 17:34:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110833 states to 110833 states and 134510 transitions. [2018-09-14 17:34:56,062 INFO L78 Accepts]: Start accepts. Automaton has 110833 states and 134510 transitions. Word has length 407 [2018-09-14 17:34:56,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:56,063 INFO L480 AbstractCegarLoop]: Abstraction has 110833 states and 134510 transitions. [2018-09-14 17:34:56,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:34:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 110833 states and 134510 transitions. [2018-09-14 17:34:56,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-09-14 17:34:56,102 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:56,102 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:34:56,102 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:56,103 INFO L82 PathProgramCache]: Analyzing trace with hash 31916744, now seen corresponding path program 1 times [2018-09-14 17:34:56,103 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:56,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:56,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:56,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:56,104 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 187 proven. 78 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-14 17:34:56,730 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:56,730 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 17:34:56,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:56,747 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:56,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-14 17:34:57,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-14 17:34:57,533 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:34:57,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-14 17:34:57,534 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:34:57,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:34:57,535 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:34:57,535 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:34:57,535 INFO L87 Difference]: Start difference. First operand 110833 states and 134510 transitions. Second operand 3 states. [2018-09-14 17:35:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:35:06,558 INFO L93 Difference]: Finished difference Result 228070 states and 283356 transitions. [2018-09-14 17:35:06,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:35:06,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 411 [2018-09-14 17:35:06,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:35:06,944 INFO L225 Difference]: With dead ends: 228070 [2018-09-14 17:35:06,945 INFO L226 Difference]: Without dead ends: 118117 [2018-09-14 17:35:07,149 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:35:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118117 states. [2018-09-14 17:35:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118117 to 117993. [2018-09-14 17:35:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117993 states. [2018-09-14 17:35:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117993 states to 117993 states and 143123 transitions. [2018-09-14 17:35:08,820 INFO L78 Accepts]: Start accepts. Automaton has 117993 states and 143123 transitions. Word has length 411 [2018-09-14 17:35:08,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:35:08,820 INFO L480 AbstractCegarLoop]: Abstraction has 117993 states and 143123 transitions. [2018-09-14 17:35:08,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:35:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 117993 states and 143123 transitions. [2018-09-14 17:35:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-09-14 17:35:08,858 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:35:08,858 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:35:08,859 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:35:08,859 INFO L82 PathProgramCache]: Analyzing trace with hash -950703183, now seen corresponding path program 1 times [2018-09-14 17:35:08,859 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:35:08,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:08,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:08,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:08,860 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:35:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 318 proven. 284 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 17:35:09,431 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:09,431 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:35:09,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:09,439 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:10,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 592 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-14 17:35:10,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:35:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 323 proven. 142 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-09-14 17:35:11,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:11,374 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:35:11,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:11,392 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:11,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 587 proven. 6 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-09-14 17:35:11,891 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:35:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 320 proven. 217 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-09-14 17:35:12,287 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:35:12,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:35:12,288 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:35:12,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:35:12,289 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:35:12,289 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:35:12,289 INFO L87 Difference]: Start difference. First operand 117993 states and 143123 transitions. Second operand 9 states. [2018-09-14 17:35:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:35:31,616 INFO L93 Difference]: Finished difference Result 237035 states and 296572 transitions. [2018-09-14 17:35:31,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 17:35:31,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 510 [2018-09-14 17:35:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:35:31,984 INFO L225 Difference]: With dead ends: 237035 [2018-09-14 17:35:31,984 INFO L226 Difference]: Without dead ends: 119039 [2018-09-14 17:35:32,166 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2064 GetRequests, 2037 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:35:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119039 states. [2018-09-14 17:35:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119039 to 117438. [2018-09-14 17:35:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117438 states. [2018-09-14 17:35:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117438 states to 117438 states and 136811 transitions. [2018-09-14 17:35:33,799 INFO L78 Accepts]: Start accepts. Automaton has 117438 states and 136811 transitions. Word has length 510 [2018-09-14 17:35:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:35:33,800 INFO L480 AbstractCegarLoop]: Abstraction has 117438 states and 136811 transitions. [2018-09-14 17:35:33,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:35:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 117438 states and 136811 transitions. [2018-09-14 17:35:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-09-14 17:35:33,829 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:35:33,830 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2018-09-14 17:35:33,830 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:35:33,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1694702320, now seen corresponding path program 1 times [2018-09-14 17:35:33,830 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:35:33,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:33,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:33,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:33,831 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:35:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 366 proven. 33 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-14 17:35:35,469 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:35,469 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:35:35,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:35,477 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:35,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2018-09-14 17:35:35,749 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:35:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2018-09-14 17:35:36,041 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:35:36,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 4 [2018-09-14 17:35:36,042 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:35:36,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:35:36,042 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:35:36,042 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:35:36,043 INFO L87 Difference]: Start difference. First operand 117438 states and 136811 transitions. Second operand 3 states. [2018-09-14 17:35:45,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:35:45,229 INFO L93 Difference]: Finished difference Result 233949 states and 272707 transitions. [2018-09-14 17:35:45,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:35:45,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 509 [2018-09-14 17:35:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:35:45,477 INFO L225 Difference]: With dead ends: 233949 [2018-09-14 17:35:45,477 INFO L226 Difference]: Without dead ends: 111727 [2018-09-14 17:35:45,646 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1023 GetRequests, 1017 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:35:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111727 states. [2018-09-14 17:35:47,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111727 to 110108. [2018-09-14 17:35:47,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110108 states. [2018-09-14 17:35:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110108 states to 110108 states and 123105 transitions. [2018-09-14 17:35:48,137 INFO L78 Accepts]: Start accepts. Automaton has 110108 states and 123105 transitions. Word has length 509 [2018-09-14 17:35:48,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:35:48,138 INFO L480 AbstractCegarLoop]: Abstraction has 110108 states and 123105 transitions. [2018-09-14 17:35:48,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:35:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 110108 states and 123105 transitions. [2018-09-14 17:35:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2018-09-14 17:35:48,221 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:35:48,222 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:48,222 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:35:48,222 INFO L82 PathProgramCache]: Analyzing trace with hash 129338105, now seen corresponding path program 1 times [2018-09-14 17:35:48,222 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:35:48,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:48,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:48,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:48,224 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:35:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 70 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:35:50,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:50,580 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 17:35:50,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:50,588 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:51,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-14 17:35:52,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-14 17:35:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 70 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:35:56,019 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:35:56,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-09-14 17:35:56,020 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:35:56,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:35:56,021 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:35:56,021 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:35:56,022 INFO L87 Difference]: Start difference. First operand 110108 states and 123105 transitions. Second operand 5 states. [2018-09-14 17:35:56,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 17:35:56,023 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:35:56,029 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:35:56,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:35:56 BoogieIcfgContainer [2018-09-14 17:35:56,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:35:56,031 INFO L168 Benchmark]: Toolchain (without parser) took 225710.13 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 618.4 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:56,032 INFO L168 Benchmark]: CDTParser took 0.25 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 17:35:56,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2597.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 349.8 MB). Peak memory consumption was 349.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:56,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 295.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:56,034 INFO L168 Benchmark]: Boogie Preprocessor took 1374.23 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:56,035 INFO L168 Benchmark]: RCFGBuilder took 10957.88 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 157.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -17.2 MB). Peak memory consumption was 754.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:56,036 INFO L168 Benchmark]: TraceAbstraction took 210477.86 ms. Allocated memory was 2.7 GB in the beginning and 4.3 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 408.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:56,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2597.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 349.8 MB). Peak memory consumption was 349.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 295.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1374.23 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10957.88 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 157.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -17.2 MB). Peak memory consumption was 754.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210477.86 ms. Allocated memory was 2.7 GB in the beginning and 4.3 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 408.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was constructing difference of abstraction (110108states) and FLOYD_HOARE automaton (currently 2 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 210.3s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 169.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10118 SDtfs, 44508 SDslu, 6209 SDs, 0 SdLazy, 76852 SolverSat, 17670 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 134.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10941 GetRequests, 10793 SyntacticMatches, 25 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117993occurred in iteration=10, 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: 14.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 10047 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.9s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 9914 NumberOfCodeBlocks, 9914 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 15271 ConstructedInterpolants, 0 QuantifiedInterpolants, 16524695 SizeOfPredicates, 17 NumberOfNonLiveVariables, 8486 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 37 InterpolantComputations, 14 PerfectInterpolantSequences, 11062/12187 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/Problem13_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-35-56-058.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-35-56-058.csv Completed graceful shutdown