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/Problem17_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:14:26,278 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:14:26,280 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:14:26,295 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:14:26,295 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:14:26,298 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:14:26,300 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:14:26,302 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:14:26,305 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:14:26,307 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:14:26,308 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:14:26,308 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:14:26,310 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:14:26,311 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:14:26,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:14:26,316 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:14:26,316 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:14:26,320 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:14:26,328 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:14:26,334 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:14:26,335 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:14:26,336 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:14:26,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:14:26,342 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:14:26,342 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:14:26,344 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:14:26,346 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:14:26,346 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:14:26,347 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:14:26,349 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:14:26,349 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:14:26,349 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:14:26,350 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:14:26,350 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:14:26,354 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:14:26,355 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:14:26,356 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 [2018-09-18 12:14:26,385 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:14:26,385 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:14:26,386 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:14:26,386 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:14:26,387 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:14:26,387 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:14:26,387 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:14:26,387 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:14:26,388 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:14:26,388 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:14:26,388 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:14:26,388 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:14:26,389 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:14:26,389 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:14:26,389 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:14:26,390 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:14:26,390 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:14:26,390 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:14:26,390 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:14:26,390 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:14:26,391 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:14:26,391 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:14:26,391 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:14:26,391 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:14:26,393 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:14:26,393 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:14:26,393 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:14:26,394 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:14:26,394 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:14:26,394 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:14:26,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:14:26,395 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:14:26,395 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:14:26,395 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:14:26,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:14:26,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:14:26,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:14:26,484 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:14:26,484 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:14:26,485 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c [2018-09-18 12:14:26,839 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0b3b4251/8d41301903134c4fb693570128fc2a8a/FLAGeb521ec98 [2018-09-18 12:14:27,218 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:14:27,219 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c [2018-09-18 12:14:27,247 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0b3b4251/8d41301903134c4fb693570128fc2a8a/FLAGeb521ec98 [2018-09-18 12:14:27,266 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0b3b4251/8d41301903134c4fb693570128fc2a8a [2018-09-18 12:14:27,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:14:27,280 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:14:27,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:14:27,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:14:27,288 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:14:27,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:14:27" (1/1) ... [2018-09-18 12:14:27,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a2763a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:27, skipping insertion in model container [2018-09-18 12:14:27,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:14:27" (1/1) ... [2018-09-18 12:14:27,306 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:14:28,367 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:14:28,387 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:14:28,956 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:14:29,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29 WrapperNode [2018-09-18 12:14:29,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:14:29,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:14:29,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:14:29,184 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:14:29,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (1/1) ... [2018-09-18 12:14:29,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (1/1) ... [2018-09-18 12:14:29,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:14:29,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:14:29,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:14:29,455 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:14:30,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (1/1) ... [2018-09-18 12:14:30,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (1/1) ... [2018-09-18 12:14:30,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (1/1) ... [2018-09-18 12:14:30,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (1/1) ... [2018-09-18 12:14:30,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (1/1) ... [2018-09-18 12:14:30,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (1/1) ... [2018-09-18 12:14:30,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (1/1) ... [2018-09-18 12:14:30,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:14:30,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:14:30,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:14:30,336 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:14:30,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (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 [2018-09-18 12:14:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:14:30,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:14:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:14:30,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:14:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:14:30,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:14:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:14:30,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:14:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:14:30,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:14:44,022 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:14:44,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:14:44 BoogieIcfgContainer [2018-09-18 12:14:44,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:14:44,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:14:44,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:14:44,028 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:14:44,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:14:27" (1/3) ... [2018-09-18 12:14:44,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:14:44, skipping insertion in model container [2018-09-18 12:14:44,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:14:29" (2/3) ... [2018-09-18 12:14:44,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:14:44, skipping insertion in model container [2018-09-18 12:14:44,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:14:44" (3/3) ... [2018-09-18 12:14:44,032 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label42_true-unreach-call.c [2018-09-18 12:14:44,043 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:14:44,052 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:14:44,127 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:14:44,128 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:14:44,128 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:14:44,128 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:14:44,128 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:14:44,128 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:14:44,129 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:14:44,129 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:14:44,129 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:14:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-18 12:14:44,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-18 12:14:44,195 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:14:44,197 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:14:44,198 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:14:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1611453546, now seen corresponding path program 1 times [2018-09-18 12:14:44,207 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:14:44,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:14:44,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:14:44,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:14:44,269 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:14:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:14:44,748 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-18 12:14:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:14:44,761 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:14:44,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:14:44,762 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:14:44,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:14:44,786 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:14:44,787 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:14:44,790 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-18 12:14:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:14:58,540 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-09-18 12:14:58,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:14:58,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-09-18 12:14:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:14:58,578 INFO L225 Difference]: With dead ends: 2162 [2018-09-18 12:14:58,578 INFO L226 Difference]: Without dead ends: 1552 [2018-09-18 12:14:58,591 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 [2018-09-18 12:14:58,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-09-18 12:14:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-09-18 12:14:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-09-18 12:14:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-09-18 12:14:58,736 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 47 [2018-09-18 12:14:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:14:58,737 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-09-18 12:14:58,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:14:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-09-18 12:14:58,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-18 12:14:58,746 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:14:58,747 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:14:58,747 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:14:58,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1100502633, now seen corresponding path program 1 times [2018-09-18 12:14:58,747 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:14:58,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:14:58,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:14:58,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:14:58,749 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:14:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:14:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:14:59,158 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:14:59,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:14:59,158 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:14:59,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:14:59,161 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:14:59,161 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:14:59,161 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-09-18 12:15:17,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:15:17,333 INFO L93 Difference]: Finished difference Result 5786 states and 10682 transitions. [2018-09-18 12:15:17,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:15:17,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-09-18 12:15:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:15:17,367 INFO L225 Difference]: With dead ends: 5786 [2018-09-18 12:15:17,368 INFO L226 Difference]: Without dead ends: 4267 [2018-09-18 12:15:17,387 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:15:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-09-18 12:15:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4243. [2018-09-18 12:15:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4243 states. [2018-09-18 12:15:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 6361 transitions. [2018-09-18 12:15:17,519 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 6361 transitions. Word has length 126 [2018-09-18 12:15:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:15:17,519 INFO L480 AbstractCegarLoop]: Abstraction has 4243 states and 6361 transitions. [2018-09-18 12:15:17,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:15:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 6361 transitions. [2018-09-18 12:15:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-18 12:15:17,523 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:15:17,523 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:15:17,524 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:15:17,524 INFO L82 PathProgramCache]: Analyzing trace with hash 427806551, now seen corresponding path program 1 times [2018-09-18 12:15:17,524 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:15:17,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:15:17,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:15:17,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:15:17,525 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:15:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:15:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:15:17,727 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:15:17,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:15:17,727 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:15:17,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:15:17,728 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:15:17,728 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:15:17,729 INFO L87 Difference]: Start difference. First operand 4243 states and 6361 transitions. Second operand 6 states. [2018-09-18 12:15:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:15:25,858 INFO L93 Difference]: Finished difference Result 12712 states and 20702 transitions. [2018-09-18 12:15:25,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:15:25,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-09-18 12:15:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:15:25,926 INFO L225 Difference]: With dead ends: 12712 [2018-09-18 12:15:25,926 INFO L226 Difference]: Without dead ends: 8475 [2018-09-18 12:15:25,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:15:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8475 states. [2018-09-18 12:15:26,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8475 to 8390. [2018-09-18 12:15:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8390 states. [2018-09-18 12:15:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 12580 transitions. [2018-09-18 12:15:26,361 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 12580 transitions. Word has length 127 [2018-09-18 12:15:26,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:15:26,362 INFO L480 AbstractCegarLoop]: Abstraction has 8390 states and 12580 transitions. [2018-09-18 12:15:26,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:15:26,362 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 12580 transitions. [2018-09-18 12:15:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-09-18 12:15:26,372 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:15:26,373 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:15:26,373 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:15:26,373 INFO L82 PathProgramCache]: Analyzing trace with hash 126489534, now seen corresponding path program 1 times [2018-09-18 12:15:26,374 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:15:26,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:15:26,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:15:26,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:15:26,375 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:15:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:15:26,724 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:15:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 81 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-18 12:15:26,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:15:26,795 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 [2018-09-18 12:15:26,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:15:26,808 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:15:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:15:26,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:15:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:15:27,364 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:15:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:15:27,725 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:15:27,725 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:15:27,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:15:27,756 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:15:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:15:27,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:15:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:15:28,524 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:15:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 12:15:29,318 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 12:15:29,318 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 13 [2018-09-18 12:15:29,318 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:15:29,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:15:29,319 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:15:29,319 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:15:29,320 INFO L87 Difference]: Start difference. First operand 8390 states and 12580 transitions. Second operand 5 states. [2018-09-18 12:15:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:15:38,631 INFO L93 Difference]: Finished difference Result 20857 states and 31936 transitions. [2018-09-18 12:15:38,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:15:38,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2018-09-18 12:15:38,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:15:38,739 INFO L225 Difference]: With dead ends: 20857 [2018-09-18 12:15:38,740 INFO L226 Difference]: Without dead ends: 12438 [2018-09-18 12:15:38,799 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 793 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:15:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2018-09-18 12:15:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12428. [2018-09-18 12:15:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12428 states. [2018-09-18 12:15:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12428 states to 12428 states and 17256 transitions. [2018-09-18 12:15:39,280 INFO L78 Accepts]: Start accepts. Automaton has 12428 states and 17256 transitions. Word has length 201 [2018-09-18 12:15:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:15:39,281 INFO L480 AbstractCegarLoop]: Abstraction has 12428 states and 17256 transitions. [2018-09-18 12:15:39,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:15:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 12428 states and 17256 transitions. [2018-09-18 12:15:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-18 12:15:39,286 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:15:39,286 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:15:39,287 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:15:39,287 INFO L82 PathProgramCache]: Analyzing trace with hash 118712312, now seen corresponding path program 1 times [2018-09-18 12:15:39,287 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:15:39,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:15:39,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:15:39,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:15:39,288 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:15:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:15:39,606 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:15:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 12:15:40,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:15:40,093 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 [2018-09-18 12:15:40,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:15:40,104 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:15:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:15:40,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:15:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 12:15:40,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:15:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 12:15:40,539 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:15:40,539 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-18 12:15:40,540 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:15:40,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:15:40,540 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:15:40,541 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:15:40,541 INFO L87 Difference]: Start difference. First operand 12428 states and 17256 transitions. Second operand 3 states. [2018-09-18 12:15:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:15:49,907 INFO L93 Difference]: Finished difference Result 25289 states and 35323 transitions. [2018-09-18 12:15:49,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:15:49,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-09-18 12:15:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:15:49,973 INFO L225 Difference]: With dead ends: 25289 [2018-09-18 12:15:49,973 INFO L226 Difference]: Without dead ends: 12867 [2018-09-18 12:15:50,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 428 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:15:50,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2018-09-18 12:15:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2018-09-18 12:15:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12867 states. [2018-09-18 12:15:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 17451 transitions. [2018-09-18 12:15:50,350 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 17451 transitions. Word has length 214 [2018-09-18 12:15:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:15:50,351 INFO L480 AbstractCegarLoop]: Abstraction has 12867 states and 17451 transitions. [2018-09-18 12:15:50,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:15:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 17451 transitions. [2018-09-18 12:15:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-09-18 12:15:50,361 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:15:50,362 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:15:50,362 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:15:50,362 INFO L82 PathProgramCache]: Analyzing trace with hash 115888515, now seen corresponding path program 1 times [2018-09-18 12:15:50,362 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:15:50,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:15:50,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:15:50,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:15:50,366 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:15:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:15:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 12:15:50,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:15:50,998 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:15:51,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:15:51,014 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:15:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:15:51,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:15:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 12:15:51,467 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:15:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 12:15:52,294 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:15:52,294 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:15:52,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:15:52,310 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:15:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:15:52,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:15:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 12:15:52,590 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:15:52,740 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 12:15:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 12:15:53,032 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:15:53,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-18 12:15:53,033 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:15:53,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 12:15:53,033 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 12:15:53,033 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:15:53,034 INFO L87 Difference]: Start difference. First operand 12867 states and 17451 transitions. Second operand 7 states. [2018-09-18 12:16:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:16:04,567 INFO L93 Difference]: Finished difference Result 38249 states and 52051 transitions. [2018-09-18 12:16:04,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 12:16:04,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2018-09-18 12:16:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:16:04,670 INFO L225 Difference]: With dead ends: 38249 [2018-09-18 12:16:04,671 INFO L226 Difference]: Without dead ends: 25354 [2018-09-18 12:16:04,711 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1164 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:16:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25354 states. [2018-09-18 12:16:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25354 to 23197. [2018-09-18 12:16:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23197 states. [2018-09-18 12:16:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23197 states to 23197 states and 29893 transitions. [2018-09-18 12:16:05,358 INFO L78 Accepts]: Start accepts. Automaton has 23197 states and 29893 transitions. Word has length 291 [2018-09-18 12:16:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:16:05,359 INFO L480 AbstractCegarLoop]: Abstraction has 23197 states and 29893 transitions. [2018-09-18 12:16:05,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 12:16:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 23197 states and 29893 transitions. [2018-09-18 12:16:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-09-18 12:16:05,378 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:16:05,378 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:16:05,379 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:16:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1831026004, now seen corresponding path program 1 times [2018-09-18 12:16:05,379 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:16:05,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:05,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:05,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:05,380 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:16:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 130 proven. 146 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-18 12:16:06,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:16:06,290 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:16:06,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:06,307 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:16:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:06,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:16:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-09-18 12:16:06,880 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:16:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 130 proven. 227 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:16:08,082 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:16:08,082 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:16:08,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:08,111 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:16:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:08,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:16:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-09-18 12:16:08,717 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:16:09,022 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 12:16:09,340 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 12:16:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 130 proven. 227 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:16:10,219 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:16:10,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 15 [2018-09-18 12:16:10,219 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:16:10,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 12:16:10,220 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 12:16:10,221 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:16:10,221 INFO L87 Difference]: Start difference. First operand 23197 states and 29893 transitions. Second operand 10 states. [2018-09-18 12:16:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:16:38,016 INFO L93 Difference]: Finished difference Result 74514 states and 106607 transitions. [2018-09-18 12:16:38,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-18 12:16:38,017 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 337 [2018-09-18 12:16:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:16:38,234 INFO L225 Difference]: With dead ends: 74514 [2018-09-18 12:16:38,234 INFO L226 Difference]: Without dead ends: 47427 [2018-09-18 12:16:38,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1379 GetRequests, 1347 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=210, Invalid=492, Unknown=0, NotChecked=0, Total=702 [2018-09-18 12:16:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47427 states. [2018-09-18 12:16:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47427 to 40548. [2018-09-18 12:16:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40548 states. [2018-09-18 12:16:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40548 states to 40548 states and 53542 transitions. [2018-09-18 12:16:39,518 INFO L78 Accepts]: Start accepts. Automaton has 40548 states and 53542 transitions. Word has length 337 [2018-09-18 12:16:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:16:39,519 INFO L480 AbstractCegarLoop]: Abstraction has 40548 states and 53542 transitions. [2018-09-18 12:16:39,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 12:16:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 40548 states and 53542 transitions. [2018-09-18 12:16:39,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-09-18 12:16:39,544 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:16:39,544 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:16:39,545 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:16:39,545 INFO L82 PathProgramCache]: Analyzing trace with hash -227933580, now seen corresponding path program 1 times [2018-09-18 12:16:39,545 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:16:39,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:39,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:39,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:39,546 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:16:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:39,992 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-18 12:16:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-09-18 12:16:40,072 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:16:40,072 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:16:40,073 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:16:40,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:16:40,073 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:16:40,074 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:16:40,074 INFO L87 Difference]: Start difference. First operand 40548 states and 53542 transitions. Second operand 4 states. [2018-09-18 12:16:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:16:46,553 INFO L93 Difference]: Finished difference Result 105548 states and 142533 transitions. [2018-09-18 12:16:46,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:16:46,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 374 [2018-09-18 12:16:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:16:46,749 INFO L225 Difference]: With dead ends: 105548 [2018-09-18 12:16:46,750 INFO L226 Difference]: Without dead ends: 52292 [2018-09-18 12:16:46,906 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:16:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52292 states. [2018-09-18 12:16:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52292 to 49870. [2018-09-18 12:16:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49870 states. [2018-09-18 12:16:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49870 states to 49870 states and 63819 transitions. [2018-09-18 12:16:47,974 INFO L78 Accepts]: Start accepts. Automaton has 49870 states and 63819 transitions. Word has length 374 [2018-09-18 12:16:47,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:16:47,975 INFO L480 AbstractCegarLoop]: Abstraction has 49870 states and 63819 transitions. [2018-09-18 12:16:47,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:16:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 49870 states and 63819 transitions. [2018-09-18 12:16:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-09-18 12:16:48,015 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:16:48,015 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 12:16:48,015 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:16:48,016 INFO L82 PathProgramCache]: Analyzing trace with hash 479746725, now seen corresponding path program 1 times [2018-09-18 12:16:48,016 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:16:48,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:48,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:48,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:16:48,017 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:16:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:16:48,426 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:16:48,426 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 [2018-09-18 12:16:48,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:48,437 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:16:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:48,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:16:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:16:49,069 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:16:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:16:49,284 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:16:49,284 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:16:49,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:16:49,304 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:16:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:16:49,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:16:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:16:49,706 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:16:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:16:50,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:16:50,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-18 12:16:50,067 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:16:50,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:16:50,068 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:16:50,068 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:16:50,068 INFO L87 Difference]: Start difference. First operand 49870 states and 63819 transitions. Second operand 6 states. [2018-09-18 12:16:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:16:59,599 INFO L93 Difference]: Finished difference Result 111757 states and 144314 transitions. [2018-09-18 12:16:59,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 12:16:59,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 478 [2018-09-18 12:16:59,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:16:59,782 INFO L225 Difference]: With dead ends: 111757 [2018-09-18 12:16:59,783 INFO L226 Difference]: Without dead ends: 56770 [2018-09-18 12:16:59,897 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1925 GetRequests, 1911 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:16:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56770 states. [2018-09-18 12:17:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56770 to 52065. [2018-09-18 12:17:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52065 states. [2018-09-18 12:17:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52065 states to 52065 states and 67434 transitions. [2018-09-18 12:17:01,022 INFO L78 Accepts]: Start accepts. Automaton has 52065 states and 67434 transitions. Word has length 478 [2018-09-18 12:17:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:01,023 INFO L480 AbstractCegarLoop]: Abstraction has 52065 states and 67434 transitions. [2018-09-18 12:17:01,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:17:01,023 INFO L276 IsEmpty]: Start isEmpty. Operand 52065 states and 67434 transitions. [2018-09-18 12:17:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-09-18 12:17:01,054 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:01,055 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 12:17:01,055 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash 610369496, now seen corresponding path program 1 times [2018-09-18 12:17:01,056 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:01,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:01,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:01,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:01,057 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:17:01,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:17:01,655 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:17:01,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:01,671 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:17:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:01,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:17:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:17:02,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:17:02,407 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 12:17:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:17:03,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:17:03,629 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:17:03,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:03,651 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:17:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:03,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:17:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:17:04,210 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:17:04,448 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 12:17:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:17:05,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:17:05,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-09-18 12:17:05,012 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:17:05,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:17:05,013 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:17:05,014 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:17:05,014 INFO L87 Difference]: Start difference. First operand 52065 states and 67434 transitions. Second operand 6 states. [2018-09-18 12:17:21,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:17:21,557 INFO L93 Difference]: Finished difference Result 118980 states and 156499 transitions. [2018-09-18 12:17:21,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 12:17:21,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 497 [2018-09-18 12:17:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:17:21,756 INFO L225 Difference]: With dead ends: 118980 [2018-09-18 12:17:21,757 INFO L226 Difference]: Without dead ends: 62304 [2018-09-18 12:17:21,860 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2000 GetRequests, 1985 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:17:21,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62304 states. [2018-09-18 12:17:23,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62304 to 59286. [2018-09-18 12:17:23,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59286 states. [2018-09-18 12:17:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59286 states to 59286 states and 76101 transitions. [2018-09-18 12:17:23,521 INFO L78 Accepts]: Start accepts. Automaton has 59286 states and 76101 transitions. Word has length 497 [2018-09-18 12:17:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:23,522 INFO L480 AbstractCegarLoop]: Abstraction has 59286 states and 76101 transitions. [2018-09-18 12:17:23,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:17:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand 59286 states and 76101 transitions. [2018-09-18 12:17:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-09-18 12:17:23,556 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:23,557 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:17:23,558 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:23,558 INFO L82 PathProgramCache]: Analyzing trace with hash -569907959, now seen corresponding path program 1 times [2018-09-18 12:17:23,558 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:23,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:23,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:23,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:23,559 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-18 12:17:23,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:17:23,928 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 [2018-09-18 12:17:23,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:23,943 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:17:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:24,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:17:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-09-18 12:17:24,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:17:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-18 12:17:24,654 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:17:24,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-18 12:17:24,655 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:17:24,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:17:24,656 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:17:24,656 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:17:24,658 INFO L87 Difference]: Start difference. First operand 59286 states and 76101 transitions. Second operand 3 states. [2018-09-18 12:17:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:17:29,324 INFO L93 Difference]: Finished difference Result 137723 states and 178431 transitions. [2018-09-18 12:17:29,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:17:29,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 500 [2018-09-18 12:17:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:17:29,465 INFO L225 Difference]: With dead ends: 137723 [2018-09-18 12:17:29,465 INFO L226 Difference]: Without dead ends: 67578 [2018-09-18 12:17:29,558 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 1001 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:17:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67578 states. [2018-09-18 12:17:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67578 to 65363. [2018-09-18 12:17:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65363 states. [2018-09-18 12:17:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65363 states to 65363 states and 82002 transitions. [2018-09-18 12:17:30,392 INFO L78 Accepts]: Start accepts. Automaton has 65363 states and 82002 transitions. Word has length 500 [2018-09-18 12:17:30,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:30,393 INFO L480 AbstractCegarLoop]: Abstraction has 65363 states and 82002 transitions. [2018-09-18 12:17:30,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:17:30,393 INFO L276 IsEmpty]: Start isEmpty. Operand 65363 states and 82002 transitions. [2018-09-18 12:17:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-09-18 12:17:30,421 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:30,421 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 12:17:30,421 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:30,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1761012760, now seen corresponding path program 1 times [2018-09-18 12:17:30,422 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:30,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:30,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:30,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:30,423 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2018-09-18 12:17:30,976 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:17:30,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:17:30,977 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:17:30,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:17:30,978 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:17:30,978 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:17:30,978 INFO L87 Difference]: Start difference. First operand 65363 states and 82002 transitions. Second operand 3 states. [2018-09-18 12:17:36,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:17:36,194 INFO L93 Difference]: Finished difference Result 136134 states and 171169 transitions. [2018-09-18 12:17:36,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:17:36,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 583 [2018-09-18 12:17:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:17:36,355 INFO L225 Difference]: With dead ends: 136134 [2018-09-18 12:17:36,355 INFO L226 Difference]: Without dead ends: 66469 [2018-09-18 12:17:36,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:17:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66469 states. [2018-09-18 12:17:37,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66469 to 60362. [2018-09-18 12:17:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60362 states. [2018-09-18 12:17:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60362 states to 60362 states and 73275 transitions. [2018-09-18 12:17:37,673 INFO L78 Accepts]: Start accepts. Automaton has 60362 states and 73275 transitions. Word has length 583 [2018-09-18 12:17:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:37,673 INFO L480 AbstractCegarLoop]: Abstraction has 60362 states and 73275 transitions. [2018-09-18 12:17:37,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:17:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand 60362 states and 73275 transitions. [2018-09-18 12:17:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2018-09-18 12:17:37,747 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:37,748 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 12:17:37,748 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:37,749 INFO L82 PathProgramCache]: Analyzing trace with hash -483040668, now seen corresponding path program 1 times [2018-09-18 12:17:37,749 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:37,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:37,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:37,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:37,750 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 532 proven. 114 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-09-18 12:17:38,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:17:38,885 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:17:38,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:38,899 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:17:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:39,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:17:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 1006 proven. 2 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-18 12:17:40,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:17:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 532 proven. 114 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-09-18 12:17:40,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:17:40,793 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:17:40,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:40,810 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:17:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:41,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:17:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 1006 proven. 2 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-18 12:17:42,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:17:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 532 proven. 114 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-09-18 12:17:42,783 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:17:42,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-09-18 12:17:42,784 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:17:42,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:17:42,785 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:17:42,785 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:17:42,786 INFO L87 Difference]: Start difference. First operand 60362 states and 73275 transitions. Second operand 6 states. [2018-09-18 12:17:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:17:53,614 INFO L93 Difference]: Finished difference Result 137125 states and 167699 transitions. [2018-09-18 12:17:53,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 12:17:53,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 949 [2018-09-18 12:17:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:17:53,783 INFO L225 Difference]: With dead ends: 137125 [2018-09-18 12:17:53,783 INFO L226 Difference]: Without dead ends: 77645 [2018-09-18 12:17:53,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3807 GetRequests, 3793 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:17:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77645 states. [2018-09-18 12:17:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77645 to 74330. [2018-09-18 12:17:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74330 states. [2018-09-18 12:17:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74330 states to 74330 states and 88709 transitions. [2018-09-18 12:17:54,744 INFO L78 Accepts]: Start accepts. Automaton has 74330 states and 88709 transitions. Word has length 949 [2018-09-18 12:17:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:17:54,745 INFO L480 AbstractCegarLoop]: Abstraction has 74330 states and 88709 transitions. [2018-09-18 12:17:54,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:17:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 74330 states and 88709 transitions. [2018-09-18 12:17:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2018-09-18 12:17:54,878 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:17:54,879 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:17:54,879 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:17:54,880 INFO L82 PathProgramCache]: Analyzing trace with hash -630462077, now seen corresponding path program 1 times [2018-09-18 12:17:54,880 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:17:54,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:54,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:54,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:17:54,881 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:17:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 176 proven. 5 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2018-09-18 12:17:56,661 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:17:56,661 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:17:56,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:17:56,673 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:17:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:17:56,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:17:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 787 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-09-18 12:17:57,622 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:17:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 182 proven. 11 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2018-09-18 12:17:58,554 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:17:58,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-09-18 12:17:58,555 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:17:58,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:17:58,556 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:17:58,557 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:17:58,557 INFO L87 Difference]: Start difference. First operand 74330 states and 88709 transitions. Second operand 3 states. [2018-09-18 12:18:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:03,227 INFO L93 Difference]: Finished difference Result 139816 states and 166930 transitions. [2018-09-18 12:18:03,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:18:03,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 955 [2018-09-18 12:18:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:03,435 INFO L225 Difference]: With dead ends: 139816 [2018-09-18 12:18:03,435 INFO L226 Difference]: Without dead ends: 66368 [2018-09-18 12:18:03,543 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1913 GetRequests, 1905 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:18:03,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66368 states. [2018-09-18 12:18:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66368 to 65041. [2018-09-18 12:18:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65041 states. [2018-09-18 12:18:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65041 states to 65041 states and 77412 transitions. [2018-09-18 12:18:04,534 INFO L78 Accepts]: Start accepts. Automaton has 65041 states and 77412 transitions. Word has length 955 [2018-09-18 12:18:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:04,535 INFO L480 AbstractCegarLoop]: Abstraction has 65041 states and 77412 transitions. [2018-09-18 12:18:04,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:18:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 65041 states and 77412 transitions. [2018-09-18 12:18:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2018-09-18 12:18:04,591 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:04,592 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:18:04,592 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:04,593 INFO L82 PathProgramCache]: Analyzing trace with hash -825363577, now seen corresponding path program 1 times [2018-09-18 12:18:04,593 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:04,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:04,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:04,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:04,594 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1911 backedges. 620 proven. 259 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-09-18 12:18:06,560 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:18:06,560 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:18:06,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:06,575 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:18:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:06,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:18:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1911 backedges. 1432 proven. 2 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2018-09-18 12:18:08,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:18:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1911 backedges. 620 proven. 259 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-09-18 12:18:09,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:18:09,093 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:18:09,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:09,108 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:18:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:09,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-18 12:18:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1911 backedges. 1432 proven. 2 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2018-09-18 12:18:10,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:18:10,134 WARN L186 SmtUtils]: Removed 1 from assertion stack [2018-09-18 12:18:10,135 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 12:18:10,336 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:18:10,336 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:18:10,341 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:18:10,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:18:10 BoogieIcfgContainer [2018-09-18 12:18:10,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:18:10,633 INFO L168 Benchmark]: Toolchain (without parser) took 223355.32 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-18 12:18:10,635 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:18:10,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1901.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:18:10,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 270.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:18:10,637 INFO L168 Benchmark]: Boogie Preprocessor took 880.71 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 935.9 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:18:10,641 INFO L168 Benchmark]: RCFGBuilder took 13687.50 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 455.4 MB). Peak memory consumption was 455.4 MB. Max. memory is 7.1 GB. [2018-09-18 12:18:10,642 INFO L168 Benchmark]: TraceAbstraction took 206607.88 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-18 12:18:10,648 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1901.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 270.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 880.71 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 935.9 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13687.50 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 455.4 MB). Peak memory consumption was 455.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206607.88 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 128). Cancelled while BasicCegarLoop was analyzing trace of length 1033 with TraceHistMax 7, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was doing sequential composition of 80 TransFormulas, while SimplifyDDAWithTimeout was simplifying term of DAG size 1. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 206.2s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 158.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4880 SDtfs, 21459 SDslu, 3208 SDs, 0 SdLazy, 43913 SolverSat, 9134 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 135.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14487 GetRequests, 14341 SyntacticMatches, 38 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74330occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 32291 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 22.4s InterpolantComputationTime, 12854 NumberOfCodeBlocks, 12854 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 19985 ConstructedInterpolants, 186 QuantifiedInterpolants, 21816292 SizeOfPredicates, 18 NumberOfNonLiveVariables, 11032 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 44 InterpolantComputations, 11 PerfectInterpolantSequences, 22428/23485 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/Problem17_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-18-10-664.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-18-10-664.csv Completed graceful shutdown