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/Problem18_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:22:05,528 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:22:05,530 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:22:05,542 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:22:05,543 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:22:05,544 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:22:05,545 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:22:05,547 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:22:05,549 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:22:05,550 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:22:05,550 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:22:05,551 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:22:05,552 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:22:05,553 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:22:05,554 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:22:05,555 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:22:05,556 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:22:05,558 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:22:05,560 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:22:05,561 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:22:05,562 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:22:05,563 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:22:05,566 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:22:05,566 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:22:05,566 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:22:05,567 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:22:05,568 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:22:05,571 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:22:05,572 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:22:05,573 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:22:05,576 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:22:05,579 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:22:05,579 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:22:05,579 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:22:05,580 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:22:05,581 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:22:05,581 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 12:22:05,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:22:05,611 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:22:05,614 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:22:05,614 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:22:05,614 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:22:05,615 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:22:05,615 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:22:05,615 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:22:05,615 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:22:05,615 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:22:05,616 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:22:05,616 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:22:05,617 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:22:05,617 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:22:05,617 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:22:05,618 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:22:05,618 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:22:05,618 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:22:05,618 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:22:05,618 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:22:05,619 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:22:05,619 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:22:05,619 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:22:05,619 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:22:05,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:22:05,621 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:22:05,621 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:22:05,622 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:22:05,622 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:22:05,622 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:22:05,622 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:22:05,622 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:22:05,622 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:22:05,623 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:22:05,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:22:05,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:22:05,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:22:05,715 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:22:05,715 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:22:05,716 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23_true-unreach-call.c [2018-09-18 12:22:06,090 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9c13146/07458d2ceacd4158bb5af1b63d62540b/FLAGc4b763d89 [2018-09-18 12:22:06,538 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:22:06,539 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label23_true-unreach-call.c [2018-09-18 12:22:06,572 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9c13146/07458d2ceacd4158bb5af1b63d62540b/FLAGc4b763d89 [2018-09-18 12:22:06,597 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9c13146/07458d2ceacd4158bb5af1b63d62540b [2018-09-18 12:22:06,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:22:06,615 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:22:06,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:22:06,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:22:06,624 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:22:06,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:22:06" (1/1) ... [2018-09-18 12:22:06,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3665023a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:06, skipping insertion in model container [2018-09-18 12:22:06,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:22:06" (1/1) ... [2018-09-18 12:22:06,643 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:22:07,703 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:22:07,725 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:22:08,198 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:22:08,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08 WrapperNode [2018-09-18 12:22:08,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:22:08,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:22:08,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:22:08,378 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:22:08,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (1/1) ... [2018-09-18 12:22:08,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (1/1) ... [2018-09-18 12:22:08,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:22:08,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:22:08,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:22:08,564 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:22:09,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (1/1) ... [2018-09-18 12:22:09,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (1/1) ... [2018-09-18 12:22:09,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (1/1) ... [2018-09-18 12:22:09,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (1/1) ... [2018-09-18 12:22:09,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (1/1) ... [2018-09-18 12:22:09,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (1/1) ... [2018-09-18 12:22:09,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (1/1) ... [2018-09-18 12:22:09,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:22:09,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:22:09,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:22:09,216 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:22:09,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (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 12:22:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:22:09,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:22:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 12:22:09,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 12:22:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:22:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:22:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:22:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:22:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:22:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:22:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:22:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:22:17,309 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:22:17,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:22:17 BoogieIcfgContainer [2018-09-18 12:22:17,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:22:17,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:22:17,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:22:17,314 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:22:17,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:22:06" (1/3) ... [2018-09-18 12:22:17,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c69e0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:22:17, skipping insertion in model container [2018-09-18 12:22:17,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:08" (2/3) ... [2018-09-18 12:22:17,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c69e0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:22:17, skipping insertion in model container [2018-09-18 12:22:17,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:22:17" (3/3) ... [2018-09-18 12:22:17,318 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label23_true-unreach-call.c [2018-09-18 12:22:17,329 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:22:17,339 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:22:17,403 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:22:17,404 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:22:17,404 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:22:17,404 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:22:17,404 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:22:17,404 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:22:17,405 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:22:17,405 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:22:17,405 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:22:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-18 12:22:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-18 12:22:17,458 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:17,459 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:22:17,461 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:17,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1417281084, now seen corresponding path program 1 times [2018-09-18 12:22:17,468 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:17,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:17,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:17,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:17,525 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:17,984 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:22:18,123 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 12:22:18,125 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:22:18,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:22:18,126 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:18,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:22:18,152 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:22:18,153 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:22:18,156 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-18 12:22:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:25,203 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-18 12:22:25,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:22:25,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-09-18 12:22:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:25,236 INFO L225 Difference]: With dead ends: 2251 [2018-09-18 12:22:25,236 INFO L226 Difference]: Without dead ends: 1474 [2018-09-18 12:22:25,246 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:22:25,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-18 12:22:25,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-18 12:22:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-18 12:22:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-09-18 12:22:25,383 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 62 [2018-09-18 12:22:25,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:25,384 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-09-18 12:22:25,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:22:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-09-18 12:22:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-18 12:22:25,394 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:25,394 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 12:22:25,394 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:25,395 INFO L82 PathProgramCache]: Analyzing trace with hash 586978190, now seen corresponding path program 1 times [2018-09-18 12:22:25,395 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:25,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:25,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:25,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:25,397 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:22:25,649 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:22:25,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:22:25,650 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:25,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:22:25,652 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:22:25,652 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:22:25,653 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-09-18 12:22:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:33,237 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-09-18 12:22:33,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:22:33,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-09-18 12:22:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:33,252 INFO L225 Difference]: With dead ends: 3698 [2018-09-18 12:22:33,252 INFO L226 Difference]: Without dead ends: 2230 [2018-09-18 12:22:33,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:22:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-09-18 12:22:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-09-18 12:22:33,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-09-18 12:22:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-09-18 12:22:33,358 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 134 [2018-09-18 12:22:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:33,358 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-09-18 12:22:33,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:22:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-09-18 12:22:33,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-18 12:22:33,364 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:33,364 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:33,364 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:33,365 INFO L82 PathProgramCache]: Analyzing trace with hash -171937505, now seen corresponding path program 1 times [2018-09-18 12:22:33,365 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:33,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:33,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:33,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:33,366 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:22:33,635 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:22:33,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:22:33,636 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:33,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:22:33,636 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:22:33,637 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:22:33,637 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-09-18 12:22:41,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:41,404 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-09-18 12:22:41,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:22:41,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-09-18 12:22:41,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:41,429 INFO L225 Difference]: With dead ends: 5866 [2018-09-18 12:22:41,429 INFO L226 Difference]: Without dead ends: 3663 [2018-09-18 12:22:41,438 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 12:22:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-09-18 12:22:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-09-18 12:22:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-09-18 12:22:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-09-18 12:22:41,554 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 157 [2018-09-18 12:22:41,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:41,555 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-09-18 12:22:41,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:22:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-09-18 12:22:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-09-18 12:22:41,561 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:41,562 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:41,562 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:41,562 INFO L82 PathProgramCache]: Analyzing trace with hash -96062505, now seen corresponding path program 1 times [2018-09-18 12:22:41,562 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:41,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:41,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:41,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:41,565 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:41,893 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:22:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:22:42,120 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:22:42,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:22:42,121 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:42,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:22:42,122 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:22:42,122 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:22:42,122 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-09-18 12:22:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:50,561 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-09-18 12:22:50,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:22:50,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-09-18 12:22:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:50,585 INFO L225 Difference]: With dead ends: 8735 [2018-09-18 12:22:50,586 INFO L226 Difference]: Without dead ends: 5102 [2018-09-18 12:22:50,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:22:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-09-18 12:22:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-09-18 12:22:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-09-18 12:22:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-09-18 12:22:50,706 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 161 [2018-09-18 12:22:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:50,707 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-09-18 12:22:50,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:22:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-09-18 12:22:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-18 12:22:50,711 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:50,711 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:50,712 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:50,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1854006202, now seen corresponding path program 1 times [2018-09-18 12:22:50,712 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:50,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:50,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:50,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:50,713 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:22:50,920 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:22:50,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:22:50,920 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:50,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:22:50,921 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:22:50,921 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:22:50,922 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-09-18 12:22:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:57,058 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-09-18 12:22:57,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:22:57,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-09-18 12:22:57,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:57,104 INFO L225 Difference]: With dead ends: 13307 [2018-09-18 12:22:57,104 INFO L226 Difference]: Without dead ends: 8229 [2018-09-18 12:22:57,122 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:22:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-09-18 12:22:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-09-18 12:22:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-09-18 12:22:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-09-18 12:22:57,315 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 192 [2018-09-18 12:22:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:57,315 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-09-18 12:22:57,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:22:57,315 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-09-18 12:22:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-09-18 12:22:57,322 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:57,323 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 12:22:57,323 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:57,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1030698289, now seen corresponding path program 1 times [2018-09-18 12:22:57,323 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:57,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:57,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:57,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:57,325 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 110 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:22:57,696 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:22:57,696 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 12:22:57,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:57,705 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:22:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:57,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:22:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 12:22:58,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:22:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 110 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:22:58,619 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:22:58,620 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-18 12:22:58,620 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:58,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:22:58,621 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:22:58,621 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:22:58,622 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 5 states. [2018-09-18 12:23:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:07,825 INFO L93 Difference]: Finished difference Result 25831 states and 35540 transitions. [2018-09-18 12:23:07,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:23:07,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2018-09-18 12:23:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:07,927 INFO L225 Difference]: With dead ends: 25831 [2018-09-18 12:23:07,927 INFO L226 Difference]: Without dead ends: 17709 [2018-09-18 12:23:07,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 448 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:23:07,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17709 states. [2018-09-18 12:23:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17709 to 17370. [2018-09-18 12:23:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17370 states. [2018-09-18 12:23:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17370 states to 17370 states and 21908 transitions. [2018-09-18 12:23:08,364 INFO L78 Accepts]: Start accepts. Automaton has 17370 states and 21908 transitions. Word has length 225 [2018-09-18 12:23:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:08,365 INFO L480 AbstractCegarLoop]: Abstraction has 17370 states and 21908 transitions. [2018-09-18 12:23:08,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:23:08,365 INFO L276 IsEmpty]: Start isEmpty. Operand 17370 states and 21908 transitions. [2018-09-18 12:23:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-18 12:23:08,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:08,385 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:08,385 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:08,385 INFO L82 PathProgramCache]: Analyzing trace with hash -313591842, now seen corresponding path program 1 times [2018-09-18 12:23:08,386 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:08,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:08,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:08,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:08,387 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:23:08,691 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:23:08,691 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:23:08,692 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:08,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:23:08,692 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:23:08,693 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:23:08,693 INFO L87 Difference]: Start difference. First operand 17370 states and 21908 transitions. Second operand 4 states. [2018-09-18 12:23:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:17,130 INFO L93 Difference]: Finished difference Result 41798 states and 53192 transitions. [2018-09-18 12:23:17,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:23:17,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2018-09-18 12:23:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:17,212 INFO L225 Difference]: With dead ends: 41798 [2018-09-18 12:23:17,213 INFO L226 Difference]: Without dead ends: 24434 [2018-09-18 12:23:17,289 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:23:17,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24434 states. [2018-09-18 12:23:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24434 to 24432. [2018-09-18 12:23:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24432 states. [2018-09-18 12:23:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24432 states to 24432 states and 29025 transitions. [2018-09-18 12:23:17,708 INFO L78 Accepts]: Start accepts. Automaton has 24432 states and 29025 transitions. Word has length 286 [2018-09-18 12:23:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:17,709 INFO L480 AbstractCegarLoop]: Abstraction has 24432 states and 29025 transitions. [2018-09-18 12:23:17,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:23:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 24432 states and 29025 transitions. [2018-09-18 12:23:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-09-18 12:23:17,722 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:17,723 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:23:17,723 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:17,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1744450484, now seen corresponding path program 1 times [2018-09-18 12:23:17,723 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:17,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:17,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:17,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:17,724 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:18,176 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-09-18 12:23:18,924 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-09-18 12:23:19,422 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-09-18 12:23:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 110 proven. 102 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:23:19,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:19,801 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:23:19,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:19,818 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:19,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 12:23:20,290 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 110 proven. 102 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:23:21,345 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:23:21,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-09-18 12:23:21,345 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:21,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:23:21,347 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:23:21,348 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:23:21,348 INFO L87 Difference]: Start difference. First operand 24432 states and 29025 transitions. Second operand 5 states. [2018-09-18 12:23:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:30,573 INFO L93 Difference]: Finished difference Result 59862 states and 71083 transitions. [2018-09-18 12:23:30,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 12:23:30,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2018-09-18 12:23:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:30,650 INFO L225 Difference]: With dead ends: 59862 [2018-09-18 12:23:30,650 INFO L226 Difference]: Without dead ends: 35436 [2018-09-18 12:23:30,689 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 635 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:23:30,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35436 states. [2018-09-18 12:23:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35436 to 35063. [2018-09-18 12:23:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35063 states. [2018-09-18 12:23:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35063 states to 35063 states and 41015 transitions. [2018-09-18 12:23:31,249 INFO L78 Accepts]: Start accepts. Automaton has 35063 states and 41015 transitions. Word has length 320 [2018-09-18 12:23:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:31,250 INFO L480 AbstractCegarLoop]: Abstraction has 35063 states and 41015 transitions. [2018-09-18 12:23:31,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:23:31,250 INFO L276 IsEmpty]: Start isEmpty. Operand 35063 states and 41015 transitions. [2018-09-18 12:23:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-09-18 12:23:31,269 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:31,269 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:23:31,270 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1527614985, now seen corresponding path program 1 times [2018-09-18 12:23:31,270 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:31,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:31,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:31,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:31,271 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:31,630 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:23:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 110 proven. 133 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:23:32,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:32,106 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 12:23:32,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:32,123 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:32,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 12:23:32,542 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 110 proven. 133 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:23:32,998 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:23:32,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 12:23:32,999 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:32,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:23:32,999 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:23:32,999 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:23:33,000 INFO L87 Difference]: Start difference. First operand 35063 states and 41015 transitions. Second operand 5 states. [2018-09-18 12:23:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:39,399 INFO L93 Difference]: Finished difference Result 70137 states and 82592 transitions. [2018-09-18 12:23:39,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:23:39,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 351 [2018-09-18 12:23:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:39,484 INFO L225 Difference]: With dead ends: 70137 [2018-09-18 12:23:39,484 INFO L226 Difference]: Without dead ends: 35080 [2018-09-18 12:23:39,542 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 696 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:23:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35080 states. [2018-09-18 12:23:39,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35080 to 32681. [2018-09-18 12:23:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32681 states. [2018-09-18 12:23:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32681 states to 32681 states and 36087 transitions. [2018-09-18 12:23:40,013 INFO L78 Accepts]: Start accepts. Automaton has 32681 states and 36087 transitions. Word has length 351 [2018-09-18 12:23:40,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:40,014 INFO L480 AbstractCegarLoop]: Abstraction has 32681 states and 36087 transitions. [2018-09-18 12:23:40,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:23:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 32681 states and 36087 transitions. [2018-09-18 12:23:40,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-09-18 12:23:40,033 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:40,034 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 12:23:40,034 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:40,034 INFO L82 PathProgramCache]: Analyzing trace with hash 771417094, now seen corresponding path program 1 times [2018-09-18 12:23:40,034 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:40,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:40,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:40,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:40,036 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 427 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:23:40,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:40,803 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 12:23:40,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:40,810 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:40,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 427 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:23:41,155 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 427 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:23:41,440 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:41,440 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 12:23:41,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:41,457 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:41,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 427 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:23:42,125 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 427 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:23:42,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:23:42,722 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:23:42,722 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:23:42,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:23:42,723 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:23:42,723 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:23:42,723 INFO L87 Difference]: Start difference. First operand 32681 states and 36087 transitions. Second operand 9 states. [2018-09-18 12:23:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:55,281 INFO L93 Difference]: Finished difference Result 70390 states and 78605 transitions. [2018-09-18 12:23:55,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-18 12:23:55,281 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 474 [2018-09-18 12:23:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:55,379 INFO L225 Difference]: With dead ends: 70390 [2018-09-18 12:23:55,379 INFO L226 Difference]: Without dead ends: 30248 [2018-09-18 12:23:55,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1923 GetRequests, 1895 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-09-18 12:23:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30248 states. [2018-09-18 12:23:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30248 to 29511. [2018-09-18 12:23:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29511 states. [2018-09-18 12:23:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29511 states to 29511 states and 31010 transitions. [2018-09-18 12:23:56,247 INFO L78 Accepts]: Start accepts. Automaton has 29511 states and 31010 transitions. Word has length 474 [2018-09-18 12:23:56,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:56,248 INFO L480 AbstractCegarLoop]: Abstraction has 29511 states and 31010 transitions. [2018-09-18 12:23:56,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:23:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 29511 states and 31010 transitions. [2018-09-18 12:23:56,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2018-09-18 12:23:56,271 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:56,272 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:56,272 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:56,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1384340920, now seen corresponding path program 1 times [2018-09-18 12:23:56,273 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:56,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:56,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:56,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:56,274 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 291 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-18 12:23:56,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:56,782 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 12:23:56,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:56,790 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:56,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 12:23:57,264 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 291 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-18 12:23:57,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:57,797 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 12:23:57,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:57,816 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:58,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 12:23:58,648 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 291 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-18 12:23:59,279 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:23:59,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-18 12:23:59,279 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:23:59,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:23:59,281 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:23:59,281 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:23:59,281 INFO L87 Difference]: Start difference. First operand 29511 states and 31010 transitions. Second operand 9 states. [2018-09-18 12:24:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:13,197 INFO L93 Difference]: Finished difference Result 96837 states and 107825 transitions. [2018-09-18 12:24:13,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 12:24:13,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 613 [2018-09-18 12:24:13,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:13,409 INFO L225 Difference]: With dead ends: 96837 [2018-09-18 12:24:13,409 INFO L226 Difference]: Without dead ends: 65879 [2018-09-18 12:24:13,510 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2474 GetRequests, 2447 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:24:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65879 states. [2018-09-18 12:24:14,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65879 to 63748. [2018-09-18 12:24:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63748 states. [2018-09-18 12:24:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63748 states to 63748 states and 70920 transitions. [2018-09-18 12:24:14,813 INFO L78 Accepts]: Start accepts. Automaton has 63748 states and 70920 transitions. Word has length 613 [2018-09-18 12:24:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:14,814 INFO L480 AbstractCegarLoop]: Abstraction has 63748 states and 70920 transitions. [2018-09-18 12:24:14,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:24:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 63748 states and 70920 transitions. [2018-09-18 12:24:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2018-09-18 12:24:14,829 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:14,830 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:14,830 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2094819388, now seen corresponding path program 1 times [2018-09-18 12:24:14,831 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:14,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:14,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:14,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:14,832 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:24:15,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:24:15,667 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 12:24:15,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:15,675 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:24:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:15,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:24:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:24:16,418 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:24:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:24:16,859 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:24:16,860 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 12:24:16,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:16,883 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:24:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:17,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:24:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:24:17,481 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:24:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:24:17,793 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:24:17,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 12:24:17,794 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:24:17,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:24:17,795 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:24:17,796 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:24:17,796 INFO L87 Difference]: Start difference. First operand 63748 states and 70920 transitions. Second operand 9 states. [2018-09-18 12:24:28,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:28,161 INFO L93 Difference]: Finished difference Result 149694 states and 178564 transitions. [2018-09-18 12:24:28,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 12:24:28,161 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 668 [2018-09-18 12:24:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:28,458 INFO L225 Difference]: With dead ends: 149694 [2018-09-18 12:24:28,459 INFO L226 Difference]: Without dead ends: 83724 [2018-09-18 12:24:28,622 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2694 GetRequests, 2669 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-18 12:24:28,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83724 states. [2018-09-18 12:24:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83724 to 83120. [2018-09-18 12:24:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83120 states. [2018-09-18 12:24:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83120 states to 83120 states and 98121 transitions. [2018-09-18 12:24:31,433 INFO L78 Accepts]: Start accepts. Automaton has 83120 states and 98121 transitions. Word has length 668 [2018-09-18 12:24:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:31,435 INFO L480 AbstractCegarLoop]: Abstraction has 83120 states and 98121 transitions. [2018-09-18 12:24:31,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:24:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 83120 states and 98121 transitions. [2018-09-18 12:24:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2018-09-18 12:24:31,442 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:31,442 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:31,442 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:31,443 INFO L82 PathProgramCache]: Analyzing trace with hash -419430784, now seen corresponding path program 1 times [2018-09-18 12:24:31,443 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:31,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:31,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:31,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:31,444 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-09-18 12:24:32,053 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:24:32,053 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:24:32,054 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:32,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:24:32,055 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:24:32,055 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:24:32,055 INFO L87 Difference]: Start difference. First operand 83120 states and 98121 transitions. Second operand 4 states. [2018-09-18 12:24:38,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:38,238 INFO L93 Difference]: Finished difference Result 163342 states and 188867 transitions. [2018-09-18 12:24:38,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:24:38,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 713 [2018-09-18 12:24:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:38,554 INFO L225 Difference]: With dead ends: 163342 [2018-09-18 12:24:38,554 INFO L226 Difference]: Without dead ends: 80920 [2018-09-18 12:24:38,829 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:24:38,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80920 states. [2018-09-18 12:24:40,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80920 to 78197. [2018-09-18 12:24:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78197 states. [2018-09-18 12:24:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78197 states to 78197 states and 85544 transitions. [2018-09-18 12:24:40,913 INFO L78 Accepts]: Start accepts. Automaton has 78197 states and 85544 transitions. Word has length 713 [2018-09-18 12:24:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:40,914 INFO L480 AbstractCegarLoop]: Abstraction has 78197 states and 85544 transitions. [2018-09-18 12:24:40,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:24:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 78197 states and 85544 transitions. [2018-09-18 12:24:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-09-18 12:24:40,929 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:40,929 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:40,929 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:40,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1452224945, now seen corresponding path program 1 times [2018-09-18 12:24:40,930 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:40,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:40,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:40,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:40,931 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:42,036 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-18 12:24:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 581 proven. 58 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-09-18 12:24:42,627 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:24:42,627 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 12:24:42,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:42,635 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:24:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:42,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:24:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-09-18 12:24:44,510 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:24:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 220 proven. 354 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-09-18 12:24:46,558 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:24:46,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 15 [2018-09-18 12:24:46,559 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:46,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:24:46,560 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:24:46,560 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:24:46,560 INFO L87 Difference]: Start difference. First operand 78197 states and 85544 transitions. Second operand 5 states. [2018-09-18 12:24:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:51,586 INFO L93 Difference]: Finished difference Result 154185 states and 164455 transitions. [2018-09-18 12:24:51,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:24:51,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 863 [2018-09-18 12:24:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:51,721 INFO L225 Difference]: With dead ends: 154185 [2018-09-18 12:24:51,721 INFO L226 Difference]: Without dead ends: 76705 [2018-09-18 12:24:51,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1740 GetRequests, 1722 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-09-18 12:24:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76705 states. [2018-09-18 12:24:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76705 to 68276. [2018-09-18 12:24:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68276 states. [2018-09-18 12:24:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68276 states to 68276 states and 71046 transitions. [2018-09-18 12:24:52,668 INFO L78 Accepts]: Start accepts. Automaton has 68276 states and 71046 transitions. Word has length 863 [2018-09-18 12:24:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:52,669 INFO L480 AbstractCegarLoop]: Abstraction has 68276 states and 71046 transitions. [2018-09-18 12:24:52,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:24:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 68276 states and 71046 transitions. [2018-09-18 12:24:52,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1501 [2018-09-18 12:24:52,730 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:52,731 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:52,732 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:52,732 INFO L82 PathProgramCache]: Analyzing trace with hash -819962796, now seen corresponding path program 1 times [2018-09-18 12:24:52,733 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:52,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:52,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:52,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:52,734 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3199 backedges. 1114 proven. 1157 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2018-09-18 12:24:57,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:24:57,900 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:24:57,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:57,908 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:24:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:58,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3199 backedges. 1915 proven. 2 refuted. 0 times theorem prover too weak. 1282 trivial. 0 not checked. [2018-09-18 12:25:00,301 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3199 backedges. 873 proven. 146 refuted. 0 times theorem prover too weak. 2180 trivial. 0 not checked. [2018-09-18 12:25:01,499 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:01,500 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:25:01,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:01,516 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:02,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3199 backedges. 1915 proven. 2 refuted. 0 times theorem prover too weak. 1282 trivial. 0 not checked. [2018-09-18 12:25:03,227 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3199 backedges. 873 proven. 146 refuted. 0 times theorem prover too weak. 2180 trivial. 0 not checked. [2018-09-18 12:25:04,156 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:25:04,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 5, 5, 5, 5] total 24 [2018-09-18 12:25:04,157 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:25:04,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-18 12:25:04,158 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-18 12:25:04,159 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-09-18 12:25:04,159 INFO L87 Difference]: Start difference. First operand 68276 states and 71046 transitions. Second operand 23 states. [2018-09-18 12:25:24,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:24,850 INFO L93 Difference]: Finished difference Result 137994 states and 143763 transitions. [2018-09-18 12:25:24,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-18 12:25:24,851 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1500 [2018-09-18 12:25:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:25,003 INFO L225 Difference]: With dead ends: 137994 [2018-09-18 12:25:25,003 INFO L226 Difference]: Without dead ends: 70435 [2018-09-18 12:25:25,058 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6113 GetRequests, 6036 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1173, Invalid=4377, Unknown=0, NotChecked=0, Total=5550 [2018-09-18 12:25:25,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70435 states. [2018-09-18 12:25:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70435 to 68273. [2018-09-18 12:25:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68273 states. [2018-09-18 12:25:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68273 states to 68273 states and 70792 transitions. [2018-09-18 12:25:25,706 INFO L78 Accepts]: Start accepts. Automaton has 68273 states and 70792 transitions. Word has length 1500 [2018-09-18 12:25:25,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:25,707 INFO L480 AbstractCegarLoop]: Abstraction has 68273 states and 70792 transitions. [2018-09-18 12:25:25,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-18 12:25:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand 68273 states and 70792 transitions. [2018-09-18 12:25:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1507 [2018-09-18 12:25:25,739 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:25,740 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:25:25,741 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:25,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1600946706, now seen corresponding path program 1 times [2018-09-18 12:25:25,741 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:25,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:25,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:25,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:25,743 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 607 proven. 281 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2018-09-18 12:25:27,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:27,998 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 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 12:25:28,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:28,006 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:28,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 1820 proven. 2 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2018-09-18 12:25:29,281 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 653 proven. 212 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2018-09-18 12:25:30,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:30,413 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 12:25:30,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:30,432 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:31,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 1820 proven. 2 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2018-09-18 12:25:31,978 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 653 proven. 212 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2018-09-18 12:25:33,077 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:25:33,078 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 17 [2018-09-18 12:25:33,078 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:25:33,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 12:25:33,080 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 12:25:33,080 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:25:33,080 INFO L87 Difference]: Start difference. First operand 68273 states and 70792 transitions. Second operand 13 states. Received shutdown request... [2018-09-18 12:25:51,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-18 12:25:51,327 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:25:51,333 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:25:51,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:25:51 BoogieIcfgContainer [2018-09-18 12:25:51,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:25:51,335 INFO L168 Benchmark]: Toolchain (without parser) took 224722.89 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 975.4 MB in the end (delta: 414.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-18 12:25:51,336 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:25:51,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1761.75 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-18 12:25:51,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.56 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:25:51,338 INFO L168 Benchmark]: Boogie Preprocessor took 651.46 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:25:51,339 INFO L168 Benchmark]: RCFGBuilder took 8094.24 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 490.0 MB). Peak memory consumption was 490.0 MB. Max. memory is 7.1 GB. [2018-09-18 12:25:51,339 INFO L168 Benchmark]: TraceAbstraction took 214023.00 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 975.4 MB in the end (delta: 799.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 12:25:51,344 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1761.75 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 185.56 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 651.46 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8094.24 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 490.0 MB). Peak memory consumption was 490.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214023.00 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 975.4 MB in the end (delta: 799.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (68273states) and FLOYD_HOARE automaton (currently 43 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (147738 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 213.9s OverallTime, 16 OverallIterations, 9 TraceHistogramMax, 159.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3153 SDtfs, 58966 SDslu, 3720 SDs, 0 SdLazy, 121108 SolverSat, 18182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22923 GetRequests, 22613 SyntacticMatches, 45 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2730 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83120occurred in iteration=12, 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: 10.9s AutomataMinimizationTime, 15 MinimizatonAttempts, 20063 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 30.2s InterpolantComputationTime, 19506 NumberOfCodeBlocks, 19506 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 30743 ConstructedInterpolants, 0 QuantifiedInterpolants, 64045572 SizeOfPredicates, 11 NumberOfNonLiveVariables, 15470 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 44 InterpolantComputations, 11 PerfectInterpolantSequences, 39879/43363 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/Problem18_label23_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-25-51-357.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label23_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-25-51-357.csv Completed graceful shutdown