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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:32:08,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:32:08,334 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:32:08,348 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:32:08,349 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:32:08,350 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:32:08,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:32:08,353 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:32:08,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:32:08,356 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:32:08,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:32:08,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:32:08,358 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:32:08,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:32:08,361 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:32:08,361 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:32:08,362 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:32:08,364 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:32:08,366 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:32:08,368 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:32:08,369 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:32:08,371 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:32:08,373 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:32:08,374 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:32:08,374 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:32:08,375 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:32:08,376 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:32:08,379 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:32:08,380 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:32:08,381 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:32:08,381 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:32:08,382 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:32:08,382 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:32:08,383 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:32:08,384 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:32:08,384 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:32:08,385 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:32:08,413 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:32:08,413 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:32:08,414 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:32:08,414 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:32:08,414 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:32:08,417 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:32:08,418 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:32:08,418 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:32:08,418 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:32:08,418 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:32:08,418 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:32:08,419 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:32:08,419 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:32:08,419 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:32:08,420 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:32:08,421 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:32:08,421 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:32:08,421 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:32:08,421 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:32:08,421 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:32:08,422 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:32:08,422 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:32:08,422 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:32:08,422 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:32:08,422 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:32:08,424 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:32:08,425 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:32:08,425 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:32:08,425 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:32:08,425 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:32:08,425 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:32:08,426 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:32:08,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:32:08,426 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:32:08,426 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:32:08,426 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:32:08,484 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:32:08,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:32:08,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:32:08,510 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:32:08,510 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:32:08,511 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-11-07 08:32:08,581 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1164e0ce/46dc8850854d4c69b331cba2d180c908/FLAGc56856f54 [2018-11-07 08:32:09,250 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:32:09,251 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-11-07 08:32:09,272 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1164e0ce/46dc8850854d4c69b331cba2d180c908/FLAGc56856f54 [2018-11-07 08:32:09,288 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1164e0ce/46dc8850854d4c69b331cba2d180c908 [2018-11-07 08:32:09,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:32:09,302 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:32:09,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:32:09,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:32:09,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:32:09,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:32:09" (1/1) ... [2018-11-07 08:32:09,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1a7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:09, skipping insertion in model container [2018-11-07 08:32:09,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:32:09" (1/1) ... [2018-11-07 08:32:09,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:32:09,392 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:32:10,036 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:32:10,041 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:32:10,249 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:32:10,268 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:32:10,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10 WrapperNode [2018-11-07 08:32:10,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:32:10,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:32:10,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:32:10,270 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:32:10,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (1/1) ... [2018-11-07 08:32:10,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (1/1) ... [2018-11-07 08:32:10,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:32:10,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:32:10,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:32:10,452 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:32:10,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (1/1) ... [2018-11-07 08:32:10,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (1/1) ... [2018-11-07 08:32:10,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (1/1) ... [2018-11-07 08:32:10,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (1/1) ... [2018-11-07 08:32:10,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (1/1) ... [2018-11-07 08:32:10,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (1/1) ... [2018-11-07 08:32:10,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (1/1) ... [2018-11-07 08:32:10,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:32:10,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:32:10,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:32:10,583 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:32:10,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (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 [2018-11-07 08:32:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:32:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:32:10,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:32:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:32:10,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:32:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:32:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:32:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:32:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:32:15,083 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:32:15,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:32:15 BoogieIcfgContainer [2018-11-07 08:32:15,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:32:15,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:32:15,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:32:15,091 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:32:15,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:32:09" (1/3) ... [2018-11-07 08:32:15,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ade8549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:32:15, skipping insertion in model container [2018-11-07 08:32:15,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:10" (2/3) ... [2018-11-07 08:32:15,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ade8549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:32:15, skipping insertion in model container [2018-11-07 08:32:15,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:32:15" (3/3) ... [2018-11-07 08:32:15,096 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label40_true-unreach-call.c [2018-11-07 08:32:15,109 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:32:15,122 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:32:15,145 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:32:15,202 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:32:15,203 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:32:15,203 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:32:15,203 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:32:15,203 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:32:15,203 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:32:15,204 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:32:15,204 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:32:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:32:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-07 08:32:15,268 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:15,269 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:32:15,272 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:15,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:15,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1597771487, now seen corresponding path program 1 times [2018-11-07 08:32:15,283 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:15,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:15,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:15,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:15,343 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:15,828 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 08:32:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:32:15,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:32:15,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:32:15,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:32:15,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:32:15,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:32:15,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:32:15,870 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 08:32:19,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:32:19,235 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-11-07 08:32:19,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:32:19,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-11-07 08:32:19,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:32:19,263 INFO L225 Difference]: With dead ends: 979 [2018-11-07 08:32:19,263 INFO L226 Difference]: Without dead ends: 680 [2018-11-07 08:32:19,274 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:32:19,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-11-07 08:32:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-11-07 08:32:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-11-07 08:32:19,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-11-07 08:32:19,369 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 51 [2018-11-07 08:32:19,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:32:19,370 INFO L480 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-11-07 08:32:19,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:32:19,370 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-11-07 08:32:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 08:32:19,382 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:19,382 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:32:19,383 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:19,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:19,383 INFO L82 PathProgramCache]: Analyzing trace with hash 686344627, now seen corresponding path program 1 times [2018-11-07 08:32:19,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:19,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:19,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:19,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:19,386 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:32:19,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:32:19,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:32:19,699 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:32:19,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:32:19,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:32:19,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:32:19,702 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-11-07 08:32:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:32:23,658 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-11-07 08:32:23,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:32:23,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-11-07 08:32:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:32:23,670 INFO L225 Difference]: With dead ends: 1555 [2018-11-07 08:32:23,670 INFO L226 Difference]: Without dead ends: 1077 [2018-11-07 08:32:23,674 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 [2018-11-07 08:32:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-11-07 08:32:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-11-07 08:32:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-11-07 08:32:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-11-07 08:32:23,732 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 124 [2018-11-07 08:32:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:32:23,733 INFO L480 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-11-07 08:32:23,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:32:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-11-07 08:32:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 08:32:23,737 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:23,737 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:32:23,738 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:23,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:23,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2122174748, now seen corresponding path program 1 times [2018-11-07 08:32:23,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:23,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:23,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:23,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:23,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:32:24,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:32:24,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:32:24,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:32:24,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:32:24,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:32:24,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:32:24,008 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-11-07 08:32:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:32:29,611 INFO L93 Difference]: Finished difference Result 2907 states and 4465 transitions. [2018-11-07 08:32:29,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:32:29,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2018-11-07 08:32:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:32:29,637 INFO L225 Difference]: With dead ends: 2907 [2018-11-07 08:32:29,637 INFO L226 Difference]: Without dead ends: 1850 [2018-11-07 08:32:29,644 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 [2018-11-07 08:32:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-11-07 08:32:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1646. [2018-11-07 08:32:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-11-07 08:32:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2436 transitions. [2018-11-07 08:32:29,705 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2436 transitions. Word has length 125 [2018-11-07 08:32:29,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:32:29,706 INFO L480 AbstractCegarLoop]: Abstraction has 1646 states and 2436 transitions. [2018-11-07 08:32:29,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:32:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2436 transitions. [2018-11-07 08:32:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 08:32:29,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:29,724 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:32:29,724 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:29,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:29,724 INFO L82 PathProgramCache]: Analyzing trace with hash -777131457, now seen corresponding path program 1 times [2018-11-07 08:32:29,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:29,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:29,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:29,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:29,726 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:30,450 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 08:32:30,851 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-11-07 08:32:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:32:30,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:32:30,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 08:32:30,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:32:30,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 08:32:30,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 08:32:30,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:32:30,949 INFO L87 Difference]: Start difference. First operand 1646 states and 2436 transitions. Second operand 7 states. [2018-11-07 08:32:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:32:35,034 INFO L93 Difference]: Finished difference Result 4743 states and 7334 transitions. [2018-11-07 08:32:35,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 08:32:35,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2018-11-07 08:32:35,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:32:35,061 INFO L225 Difference]: With dead ends: 4743 [2018-11-07 08:32:35,062 INFO L226 Difference]: Without dead ends: 2908 [2018-11-07 08:32:35,075 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 08:32:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2018-11-07 08:32:35,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2759. [2018-11-07 08:32:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2018-11-07 08:32:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3978 transitions. [2018-11-07 08:32:35,180 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3978 transitions. Word has length 146 [2018-11-07 08:32:35,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:32:35,181 INFO L480 AbstractCegarLoop]: Abstraction has 2759 states and 3978 transitions. [2018-11-07 08:32:35,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 08:32:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3978 transitions. [2018-11-07 08:32:35,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-07 08:32:35,191 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:35,192 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:32:35,192 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:35,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:35,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1721682631, now seen corresponding path program 1 times [2018-11-07 08:32:35,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:35,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:35,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:35,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:35,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 08:32:35,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:32:35,602 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:32:35,603 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-11-07 08:32:35,606 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:32:35,657 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:32:35,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:32:37,408 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:32:37,409 INFO L272 AbstractInterpreter]: Visited 126 different actions 375 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:32:37,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:37,458 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:32:37,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:32:37,458 INFO L194 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 [2018-11-07 08:32:37,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:37,486 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:32:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:37,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:32:39,584 WARN L179 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-11-07 08:32:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 08:32:39,756 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:32:40,620 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 6 [2018-11-07 08:32:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 08:32:41,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 08:32:41,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-11-07 08:32:41,358 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:32:41,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:32:41,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:32:41,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 08:32:41,360 INFO L87 Difference]: Start difference. First operand 2759 states and 3978 transitions. Second operand 6 states. [2018-11-07 08:32:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:32:47,628 INFO L93 Difference]: Finished difference Result 8421 states and 13134 transitions. [2018-11-07 08:32:47,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:32:47,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 263 [2018-11-07 08:32:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:32:47,664 INFO L225 Difference]: With dead ends: 8421 [2018-11-07 08:32:47,665 INFO L226 Difference]: Without dead ends: 5668 [2018-11-07 08:32:47,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 521 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 08:32:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5668 states. [2018-11-07 08:32:47,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5668 to 5532. [2018-11-07 08:32:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5532 states. [2018-11-07 08:32:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 8366 transitions. [2018-11-07 08:32:47,862 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 8366 transitions. Word has length 263 [2018-11-07 08:32:47,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:32:47,863 INFO L480 AbstractCegarLoop]: Abstraction has 5532 states and 8366 transitions. [2018-11-07 08:32:47,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:32:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 8366 transitions. [2018-11-07 08:32:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-07 08:32:47,878 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:47,878 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:32:47,879 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:47,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:47,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1726189397, now seen corresponding path program 1 times [2018-11-07 08:32:47,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:47,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:47,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:47,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:47,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:32:48,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:32:48,457 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:32:48,458 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-11-07 08:32:48,459 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [618], [621], [625], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:32:48,470 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:32:48,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:32:49,014 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:32:49,014 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 08:32:49,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:49,041 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:32:49,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:32:49,041 INFO L194 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 [2018-11-07 08:32:49,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:49,064 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:32:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:49,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:32:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-07 08:32:49,297 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:32:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-07 08:32:49,449 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:32:49,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-07 08:32:49,449 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:32:49,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:32:49,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:32:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:32:49,450 INFO L87 Difference]: Start difference. First operand 5532 states and 8366 transitions. Second operand 3 states. [2018-11-07 08:32:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:32:51,935 INFO L93 Difference]: Finished difference Result 14524 states and 23004 transitions. [2018-11-07 08:32:51,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:32:51,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2018-11-07 08:32:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:32:51,989 INFO L225 Difference]: With dead ends: 14524 [2018-11-07 08:32:51,989 INFO L226 Difference]: Without dead ends: 8998 [2018-11-07 08:32:52,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:32:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8998 states. [2018-11-07 08:32:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8998 to 8797. [2018-11-07 08:32:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8797 states. [2018-11-07 08:32:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8797 states to 8797 states and 12661 transitions. [2018-11-07 08:32:52,278 INFO L78 Accepts]: Start accepts. Automaton has 8797 states and 12661 transitions. Word has length 286 [2018-11-07 08:32:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:32:52,279 INFO L480 AbstractCegarLoop]: Abstraction has 8797 states and 12661 transitions. [2018-11-07 08:32:52,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:32:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 8797 states and 12661 transitions. [2018-11-07 08:32:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-11-07 08:32:52,302 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:52,303 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:32:52,303 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:52,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash 454493284, now seen corresponding path program 1 times [2018-11-07 08:32:52,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:52,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:52,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:52,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:52,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 83 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:32:53,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:32:53,040 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:32:53,040 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-11-07 08:32:53,042 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:32:53,048 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:32:53,048 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:32:53,723 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:32:53,723 INFO L272 AbstractInterpreter]: Visited 141 different actions 558 times. Merged at 7 different actions 29 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:32:53,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:53,751 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:32:53,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:32:53,751 INFO L194 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 [2018-11-07 08:32:53,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:53,768 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:32:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:53,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:32:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 08:32:53,937 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:32:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 08:32:54,110 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:32:54,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 8 [2018-11-07 08:32:54,111 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:32:54,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:32:54,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:32:54,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:32:54,112 INFO L87 Difference]: Start difference. First operand 8797 states and 12661 transitions. Second operand 3 states. [2018-11-07 08:32:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:32:55,552 INFO L93 Difference]: Finished difference Result 19525 states and 28694 transitions. [2018-11-07 08:32:55,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:32:55,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2018-11-07 08:32:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:32:55,613 INFO L225 Difference]: With dead ends: 19525 [2018-11-07 08:32:55,613 INFO L226 Difference]: Without dead ends: 10734 [2018-11-07 08:32:55,648 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 602 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:32:55,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10734 states. [2018-11-07 08:32:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10734 to 9780. [2018-11-07 08:32:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9780 states. [2018-11-07 08:32:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9780 states to 9780 states and 13929 transitions. [2018-11-07 08:32:55,918 INFO L78 Accepts]: Start accepts. Automaton has 9780 states and 13929 transitions. Word has length 300 [2018-11-07 08:32:55,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:32:55,918 INFO L480 AbstractCegarLoop]: Abstraction has 9780 states and 13929 transitions. [2018-11-07 08:32:55,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:32:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9780 states and 13929 transitions. [2018-11-07 08:32:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-11-07 08:32:55,958 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:55,959 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:32:55,959 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:55,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:55,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1785216578, now seen corresponding path program 1 times [2018-11-07 08:32:55,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:55,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:55,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:55,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:55,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-07 08:32:56,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:32:56,901 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:32:56,901 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 360 with the following transitions: [2018-11-07 08:32:56,902 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:32:56,907 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:32:56,907 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:32:57,539 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:32:57,539 INFO L272 AbstractInterpreter]: Visited 187 different actions 736 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:32:57,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:57,578 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:32:57,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:32:57,578 INFO L194 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 [2018-11-07 08:32:57,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:57,599 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:32:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:57,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:33:01,535 WARN L179 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-11-07 08:33:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 11 proven. 84 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-07 08:33:01,701 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:33:02,560 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:02,712 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:02,763 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:02,806 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:02,960 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,004 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,160 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,207 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,260 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,516 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,554 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,598 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,639 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,689 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,786 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,824 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,861 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,911 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:03,954 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,002 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,041 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,130 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,179 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,217 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,263 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,337 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,376 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,457 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,493 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,572 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,645 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,682 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,722 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,760 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,796 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,858 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:04,912 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:05,261 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:05,598 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:05,929 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,179 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,227 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,340 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,378 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,422 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,458 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,496 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,532 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,569 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,641 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,678 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,772 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,823 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,860 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,946 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:06,985 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,023 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,061 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,096 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,134 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,169 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,221 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,456 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,490 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,526 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,560 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,605 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,643 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,676 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,711 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,745 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,779 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,814 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,848 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,882 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:07,957 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,019 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,072 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,109 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,145 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,181 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,233 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,303 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,634 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,836 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,874 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,908 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,942 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:08,998 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,032 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,067 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,105 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,140 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,198 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,232 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,267 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,302 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,337 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,373 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,409 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:09,729 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,059 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,148 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,184 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,219 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,253 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,291 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,560 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,598 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,632 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,665 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:10,980 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,060 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,095 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,142 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,179 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,255 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,304 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,338 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,373 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,406 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,443 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,586 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,646 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,679 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,714 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,747 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:11,781 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,056 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,090 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,158 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,196 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,232 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,266 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,300 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,336 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,370 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,408 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,443 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,478 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,513 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,548 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,581 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,617 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,654 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,688 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,723 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,794 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,834 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,867 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,903 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,936 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:12,984 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:13,018 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:13,052 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:13,094 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:13,133 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:13,169 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:13,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 08:33:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 91 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:33:14,856 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:33:14,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2018-11-07 08:33:14,857 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:33:14,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 08:33:14,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 08:33:14,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2018-11-07 08:33:14,858 INFO L87 Difference]: Start difference. First operand 9780 states and 13929 transitions. Second operand 16 states. [2018-11-07 08:33:16,911 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-11-07 08:33:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:33:37,376 INFO L93 Difference]: Finished difference Result 39956 states and 69323 transitions. [2018-11-07 08:33:37,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-07 08:33:37,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 359 [2018-11-07 08:33:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:33:37,613 INFO L225 Difference]: With dead ends: 39956 [2018-11-07 08:33:37,614 INFO L226 Difference]: Without dead ends: 30182 [2018-11-07 08:33:37,709 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 542 SyntacticMatches, 168 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2439 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=764, Invalid=2206, Unknown=0, NotChecked=0, Total=2970 [2018-11-07 08:33:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30182 states. [2018-11-07 08:33:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30182 to 27977. [2018-11-07 08:33:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27977 states. [2018-11-07 08:33:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27977 states to 27977 states and 40100 transitions. [2018-11-07 08:33:38,702 INFO L78 Accepts]: Start accepts. Automaton has 27977 states and 40100 transitions. Word has length 359 [2018-11-07 08:33:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:33:38,703 INFO L480 AbstractCegarLoop]: Abstraction has 27977 states and 40100 transitions. [2018-11-07 08:33:38,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 08:33:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 27977 states and 40100 transitions. [2018-11-07 08:33:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-11-07 08:33:38,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:38,796 INFO L375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:33:38,796 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:38,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:38,797 INFO L82 PathProgramCache]: Analyzing trace with hash 969024169, now seen corresponding path program 1 times [2018-11-07 08:33:38,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:38,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:38,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:38,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:38,798 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 142 proven. 264 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 08:33:39,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:33:39,863 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:33:39,863 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 372 with the following transitions: [2018-11-07 08:33:39,863 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:33:39,867 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:33:39,867 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:33:43,089 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:33:43,089 INFO L272 AbstractInterpreter]: Visited 142 different actions 424 times. Merged at 8 different actions 21 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:33:43,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:43,097 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:33:43,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:33:43,097 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:33:43,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:43,108 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:33:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:43,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:33:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-11-07 08:33:46,909 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:33:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 228 proven. 92 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 08:33:47,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:33:47,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 12 [2018-11-07 08:33:47,107 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:33:47,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:33:47,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:33:47,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=89, Unknown=2, NotChecked=0, Total=132 [2018-11-07 08:33:47,108 INFO L87 Difference]: Start difference. First operand 27977 states and 40100 transitions. Second operand 10 states. [2018-11-07 08:33:57,218 WARN L179 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-11-07 08:34:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:24,680 INFO L93 Difference]: Finished difference Result 91957 states and 154339 transitions. [2018-11-07 08:34:24,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-07 08:34:24,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 371 [2018-11-07 08:34:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:25,209 INFO L225 Difference]: With dead ends: 91957 [2018-11-07 08:34:25,210 INFO L226 Difference]: Without dead ends: 64366 [2018-11-07 08:34:25,815 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 754 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=281, Invalid=708, Unknown=3, NotChecked=0, Total=992 [2018-11-07 08:34:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64366 states. [2018-11-07 08:34:27,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64366 to 62490. [2018-11-07 08:34:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62490 states. [2018-11-07 08:34:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62490 states to 62490 states and 95868 transitions. [2018-11-07 08:34:27,882 INFO L78 Accepts]: Start accepts. Automaton has 62490 states and 95868 transitions. Word has length 371 [2018-11-07 08:34:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:27,882 INFO L480 AbstractCegarLoop]: Abstraction has 62490 states and 95868 transitions. [2018-11-07 08:34:27,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:34:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 62490 states and 95868 transitions. [2018-11-07 08:34:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-11-07 08:34:28,009 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:28,010 INFO L375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:28,010 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:28,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:28,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2120109221, now seen corresponding path program 1 times [2018-11-07 08:34:28,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:28,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:28,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:28,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:28,012 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 08:34:28,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:28,649 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:28,649 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 398 with the following transitions: [2018-11-07 08:34:28,649 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:34:28,653 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:28,653 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:29,247 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:34:29,247 INFO L272 AbstractInterpreter]: Visited 156 different actions 615 times. Merged at 7 different actions 26 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:34:29,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:29,284 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:34:29,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:29,285 INFO L194 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 [2018-11-07 08:34:29,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:29,302 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:34:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:29,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:34:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 08:34:29,655 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:34:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 08:34:30,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:34:30,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 08:34:30,558 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:34:30,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 08:34:30,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 08:34:30,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:34:30,559 INFO L87 Difference]: Start difference. First operand 62490 states and 95868 transitions. Second operand 7 states. [2018-11-07 08:34:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:34,893 INFO L93 Difference]: Finished difference Result 140631 states and 236470 transitions. [2018-11-07 08:34:34,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 08:34:34,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2018-11-07 08:34:34,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:35,468 INFO L225 Difference]: With dead ends: 140631 [2018-11-07 08:34:35,468 INFO L226 Difference]: Without dead ends: 78527 [2018-11-07 08:34:35,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 795 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-11-07 08:34:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78527 states. [2018-11-07 08:34:38,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78527 to 78185. [2018-11-07 08:34:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78185 states. [2018-11-07 08:34:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78185 states to 78185 states and 123671 transitions. [2018-11-07 08:34:39,964 INFO L78 Accepts]: Start accepts. Automaton has 78185 states and 123671 transitions. Word has length 397 [2018-11-07 08:34:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:39,970 INFO L480 AbstractCegarLoop]: Abstraction has 78185 states and 123671 transitions. [2018-11-07 08:34:39,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 08:34:39,970 INFO L276 IsEmpty]: Start isEmpty. Operand 78185 states and 123671 transitions. [2018-11-07 08:34:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-11-07 08:34:40,213 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:40,214 INFO L375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:40,214 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:40,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:40,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1999725392, now seen corresponding path program 1 times [2018-11-07 08:34:40,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:40,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:40,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:40,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:40,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 357 proven. 99 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 08:34:41,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:41,118 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:41,118 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 429 with the following transitions: [2018-11-07 08:34:41,121 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [629], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:34:41,126 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:41,126 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:41,683 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:34:41,683 INFO L272 AbstractInterpreter]: Visited 156 different actions 462 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:34:41,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:41,691 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:34:41,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:41,691 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:34:41,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:41,701 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:34:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:41,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:34:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-07 08:34:41,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:34:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-07 08:34:42,240 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:34:42,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-07 08:34:42,241 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:34:42,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:34:42,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:34:42,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:34:42,243 INFO L87 Difference]: Start difference. First operand 78185 states and 123671 transitions. Second operand 6 states. [2018-11-07 08:34:46,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:46,359 INFO L93 Difference]: Finished difference Result 151126 states and 251699 transitions. [2018-11-07 08:34:46,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:34:46,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 428 [2018-11-07 08:34:46,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:46,821 INFO L225 Difference]: With dead ends: 151126 [2018-11-07 08:34:46,822 INFO L226 Difference]: Without dead ends: 73327 [2018-11-07 08:34:47,086 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 857 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:34:47,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73327 states. [2018-11-07 08:34:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73327 to 72249. [2018-11-07 08:34:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72249 states. [2018-11-07 08:34:49,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72249 states to 72249 states and 97167 transitions. [2018-11-07 08:34:49,166 INFO L78 Accepts]: Start accepts. Automaton has 72249 states and 97167 transitions. Word has length 428 [2018-11-07 08:34:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:49,167 INFO L480 AbstractCegarLoop]: Abstraction has 72249 states and 97167 transitions. [2018-11-07 08:34:49,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:34:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 72249 states and 97167 transitions. [2018-11-07 08:34:49,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-11-07 08:34:49,297 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:49,298 INFO L375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 08:34:49,298 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:49,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:49,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1660303576, now seen corresponding path program 1 times [2018-11-07 08:34:49,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:49,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:49,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:49,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:49,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 224 proven. 88 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-11-07 08:34:51,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:51,009 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:51,009 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 434 with the following transitions: [2018-11-07 08:34:51,009 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [570], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:34:51,013 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:51,013 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:51,765 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:34:51,766 INFO L272 AbstractInterpreter]: Visited 186 different actions 919 times. Merged at 8 different actions 39 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:34:51,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:51,770 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:34:51,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:51,770 INFO L194 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 [2018-11-07 08:34:51,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:51,784 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:34:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:51,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:34:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 380 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-07 08:34:52,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:34:52,855 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2018-11-07 08:34:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 224 proven. 88 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-11-07 08:34:53,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:34:53,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8] total 20 [2018-11-07 08:34:53,577 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:34:53,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 08:34:53,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 08:34:53,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-11-07 08:34:53,578 INFO L87 Difference]: Start difference. First operand 72249 states and 97167 transitions. Second operand 15 states. [2018-11-07 08:34:56,147 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2018-11-07 08:34:57,294 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-11-07 08:35:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:04,262 INFO L93 Difference]: Finished difference Result 155504 states and 218970 transitions. [2018-11-07 08:35:04,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-07 08:35:04,262 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 433 [2018-11-07 08:35:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:04,741 INFO L225 Difference]: With dead ends: 155504 [2018-11-07 08:35:04,741 INFO L226 Difference]: Without dead ends: 83641 [2018-11-07 08:35:05,035 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 888 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=831, Invalid=2475, Unknown=0, NotChecked=0, Total=3306 [2018-11-07 08:35:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83641 states. [2018-11-07 08:35:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83641 to 82724. [2018-11-07 08:35:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82724 states. [2018-11-07 08:35:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82724 states to 82724 states and 109964 transitions. [2018-11-07 08:35:09,979 INFO L78 Accepts]: Start accepts. Automaton has 82724 states and 109964 transitions. Word has length 433 [2018-11-07 08:35:09,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:09,980 INFO L480 AbstractCegarLoop]: Abstraction has 82724 states and 109964 transitions. [2018-11-07 08:35:09,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 08:35:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 82724 states and 109964 transitions. [2018-11-07 08:35:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-11-07 08:35:10,104 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:10,105 INFO L375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:35:10,105 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:10,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:10,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1660789260, now seen corresponding path program 1 times [2018-11-07 08:35:10,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:10,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:10,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:10,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:10,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 138 proven. 234 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-11-07 08:35:10,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:10,816 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:10,817 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 440 with the following transitions: [2018-11-07 08:35:10,817 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:35:10,820 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:10,820 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:11,963 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:35:11,964 INFO L272 AbstractInterpreter]: Visited 160 different actions 632 times. Merged at 8 different actions 30 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:35:11,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:11,973 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:35:11,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:11,973 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:35:11,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:11,983 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:35:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:12,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:35:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 326 proven. 107 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-07 08:35:14,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:35:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 371 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:16,312 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:35:16,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2018-11-07 08:35:16,313 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:35:16,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 08:35:16,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 08:35:16,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=177, Unknown=2, NotChecked=0, Total=240 [2018-11-07 08:35:16,314 INFO L87 Difference]: Start difference. First operand 82724 states and 109964 transitions. Second operand 11 states. Received shutdown request... [2018-11-07 08:35:51,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 08:35:51,155 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:35:51,162 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:35:51,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:35:51 BoogieIcfgContainer [2018-11-07 08:35:51,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:35:51,163 INFO L168 Benchmark]: Toolchain (without parser) took 221862.43 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 08:35:51,165 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 08:35:51,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 965.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-11-07 08:35:51,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 180.23 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 673.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -790.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2018-11-07 08:35:51,167 INFO L168 Benchmark]: Boogie Preprocessor took 131.54 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2018-11-07 08:35:51,167 INFO L168 Benchmark]: RCFGBuilder took 4502.05 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 7.1 GB. [2018-11-07 08:35:51,168 INFO L168 Benchmark]: TraceAbstraction took 216075.59 ms. Allocated memory was 2.1 GB in the beginning and 4.4 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -266.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 08:35:51,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 965.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 180.23 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 673.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -790.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.54 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4502.05 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216075.59 ms. Allocated memory was 2.1 GB in the beginning and 4.4 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -266.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (82724states) and FLOYD_HOARE automaton (currently 24 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (12819 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 215.9s OverallTime, 13 OverallIterations, 4 TraceHistogramMax, 145.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2573 SDtfs, 16587 SDslu, 3832 SDs, 0 SdLazy, 33841 SolverSat, 6746 SolverUnsat, 91 SolverUnknown, 0 SolverNotchecked, 113.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6848 GetRequests, 6424 SyntacticMatches, 197 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3744 ImplicationChecksByTransitivity, 41.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82724occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.1s AbstIntTime, 9 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 8272 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 39.5s InterpolantComputationTime, 6998 NumberOfCodeBlocks, 6998 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 10243 ConstructedInterpolants, 433 QuantifiedInterpolants, 21150686 SizeOfPredicates, 19 NumberOfNonLiveVariables, 5358 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 31 InterpolantComputations, 9 PerfectInterpolantSequences, 7388/9093 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown