java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:22:21,272 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:22:21,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:22:21,287 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:22:21,288 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:22:21,290 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:22:21,293 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:22:21,295 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:22:21,296 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:22:21,297 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:22:21,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:22:21,298 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:22:21,299 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:22:21,300 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:22:21,302 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:22:21,302 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:22:21,303 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:22:21,305 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:22:21,307 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:22:21,309 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:22:21,310 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:22:21,311 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:22:21,314 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:22:21,314 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:22:21,314 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:22:21,315 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:22:21,316 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:22:21,317 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:22:21,318 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:22:21,319 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:22:21,319 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:22:21,320 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 22:22:21,320 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:22:21,320 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:22:21,321 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:22:21,322 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:22:21,322 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:22:21,344 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:22:21,344 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:22:21,345 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:22:21,346 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:22:21,346 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:22:21,346 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:22:21,346 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:22:21,347 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:22:21,347 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:22:21,347 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:22:21,347 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:22:21,347 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:22:21,348 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:22:21,348 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:22:21,349 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:22:21,349 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:22:21,349 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:22:21,349 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:22:21,349 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:22:21,350 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:22:21,350 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:22:21,350 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:22:21,350 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:22:21,351 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:22:21,351 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:22:21,351 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:22:21,351 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:22:21,351 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:22:21,352 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:22:21,352 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:22:21,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:22:21,352 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:22:21,352 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:22:21,353 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:22:21,398 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:22:21,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:22:21,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:22:21,425 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:22:21,425 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:22:21,426 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-10-23 22:22:21,498 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7be21ebfb/1eff2923748a42139d16fb5af3479468/FLAGac44b5d11 [2018-10-23 22:22:22,395 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:22:22,396 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-10-23 22:22:22,431 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7be21ebfb/1eff2923748a42139d16fb5af3479468/FLAGac44b5d11 [2018-10-23 22:22:22,448 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7be21ebfb/1eff2923748a42139d16fb5af3479468 [2018-10-23 22:22:22,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:22:22,464 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:22:22,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:22:22,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:22:22,470 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:22:22,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:22:22" (1/1) ... [2018-10-23 22:22:22,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cee02b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:22, skipping insertion in model container [2018-10-23 22:22:22,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:22:22" (1/1) ... [2018-10-23 22:22:22,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:22:22,691 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:22:24,320 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:22:24,326 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:22:25,062 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:22:25,106 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:22:25,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25 WrapperNode [2018-10-23 22:22:25,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:22:25,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:22:25,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:22:25,109 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:22:25,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... [2018-10-23 22:22:25,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... [2018-10-23 22:22:25,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:22:25,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:22:25,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:22:25,723 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:22:25,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... [2018-10-23 22:22:25,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... [2018-10-23 22:22:25,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... [2018-10-23 22:22:25,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... [2018-10-23 22:22:25,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... [2018-10-23 22:22:25,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... [2018-10-23 22:22:26,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... [2018-10-23 22:22:26,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:22:26,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:22:26,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:22:26,057 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:22:26,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 22:22:26,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:22:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:22:26,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:22:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:22:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:22:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:22:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:22:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:22:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:22:26,133 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:22:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:22:26,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:22:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:22:26,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:22:37,412 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:22:37,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:22:37 BoogieIcfgContainer [2018-10-23 22:22:37,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:22:37,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:22:37,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:22:37,422 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:22:37,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:22:22" (1/3) ... [2018-10-23 22:22:37,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f56dddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:22:37, skipping insertion in model container [2018-10-23 22:22:37,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:22:25" (2/3) ... [2018-10-23 22:22:37,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f56dddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:22:37, skipping insertion in model container [2018-10-23 22:22:37,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:22:37" (3/3) ... [2018-10-23 22:22:37,426 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label44_false-unreach-call.c [2018-10-23 22:22:37,436 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:22:37,447 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:22:37,467 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:22:37,528 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:22:37,528 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:22:37,529 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:22:37,529 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:22:37,529 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:22:37,529 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:22:37,529 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:22:37,529 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:22:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-23 22:22:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-23 22:22:37,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:22:37,594 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] [2018-10-23 22:22:37,597 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:22:37,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:22:37,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1095367477, now seen corresponding path program 1 times [2018-10-23 22:22:37,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:22:37,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:22:37,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:22:37,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:22:37,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:22:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:22:38,048 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:22:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:22:38,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:22:38,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:22:38,147 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:22:38,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:22:38,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:22:38,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:22:38,177 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-23 22:22:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:22:46,959 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-23 22:22:46,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:22:46,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-10-23 22:22:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:22:46,999 INFO L225 Difference]: With dead ends: 3097 [2018-10-23 22:22:46,999 INFO L226 Difference]: Without dead ends: 1975 [2018-10-23 22:22:47,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:22:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-23 22:22:47,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-23 22:22:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-23 22:22:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-23 22:22:47,181 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 37 [2018-10-23 22:22:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:22:47,182 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-23 22:22:47,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:22:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-23 22:22:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-23 22:22:47,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:22:47,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:22:47,200 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:22:47,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:22:47,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1403714778, now seen corresponding path program 1 times [2018-10-23 22:22:47,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:22:47,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:22:47,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:22:47,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:22:47,206 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:22:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:22:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:22:47,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:22:47,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:22:47,466 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:22:47,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:22:47,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:22:47,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:22:47,469 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-23 22:23:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:23:09,880 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-10-23 22:23:09,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:23:09,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2018-10-23 22:23:09,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:23:09,910 INFO L225 Difference]: With dead ends: 5737 [2018-10-23 22:23:09,910 INFO L226 Difference]: Without dead ends: 3769 [2018-10-23 22:23:09,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:23:09,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-10-23 22:23:10,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-10-23 22:23:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-10-23 22:23:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-10-23 22:23:10,080 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 113 [2018-10-23 22:23:10,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:23:10,081 INFO L481 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-10-23 22:23:10,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:23:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-10-23 22:23:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 22:23:10,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:23:10,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:23:10,097 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:23:10,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:23:10,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2119578826, now seen corresponding path program 1 times [2018-10-23 22:23:10,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:23:10,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:23:10,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:23:10,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:23:10,101 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:23:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:23:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:23:10,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:23:10,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:23:10,368 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:23:10,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:23:10,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:23:10,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:23:10,369 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 5 states. [2018-10-23 22:23:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:23:47,966 INFO L93 Difference]: Finished difference Result 13664 states and 21759 transitions. [2018-10-23 22:23:47,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:23:47,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-10-23 22:23:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:23:48,027 INFO L225 Difference]: With dead ends: 13664 [2018-10-23 22:23:48,028 INFO L226 Difference]: Without dead ends: 9985 [2018-10-23 22:23:48,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:23:48,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2018-10-23 22:23:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9793. [2018-10-23 22:23:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9793 states. [2018-10-23 22:23:48,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9793 states to 9793 states and 14500 transitions. [2018-10-23 22:23:48,352 INFO L78 Accepts]: Start accepts. Automaton has 9793 states and 14500 transitions. Word has length 127 [2018-10-23 22:23:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:23:48,353 INFO L481 AbstractCegarLoop]: Abstraction has 9793 states and 14500 transitions. [2018-10-23 22:23:48,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:23:48,353 INFO L276 IsEmpty]: Start isEmpty. Operand 9793 states and 14500 transitions. [2018-10-23 22:23:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-23 22:23:48,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:23:48,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:23:48,358 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:23:48,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:23:48,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1301512730, now seen corresponding path program 1 times [2018-10-23 22:23:48,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:23:48,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:23:48,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:23:48,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:23:48,360 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:23:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:23:48,667 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:23:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:23:49,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:23:49,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:23:49,062 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:23:49,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:23:49,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:23:49,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:23:49,063 INFO L87 Difference]: Start difference. First operand 9793 states and 14500 transitions. Second operand 6 states. [2018-10-23 22:24:04,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:24:04,691 INFO L93 Difference]: Finished difference Result 34199 states and 53844 transitions. [2018-10-23 22:24:04,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:24:04,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-23 22:24:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:24:04,828 INFO L225 Difference]: With dead ends: 34199 [2018-10-23 22:24:04,828 INFO L226 Difference]: Without dead ends: 24412 [2018-10-23 22:24:04,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:24:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24412 states. [2018-10-23 22:24:05,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24412 to 24173. [2018-10-23 22:24:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24173 states. [2018-10-23 22:24:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24173 states to 24173 states and 34093 transitions. [2018-10-23 22:24:05,553 INFO L78 Accepts]: Start accepts. Automaton has 24173 states and 34093 transitions. Word has length 145 [2018-10-23 22:24:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:24:05,554 INFO L481 AbstractCegarLoop]: Abstraction has 24173 states and 34093 transitions. [2018-10-23 22:24:05,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:24:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 24173 states and 34093 transitions. [2018-10-23 22:24:05,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-23 22:24:05,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:24:05,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:24:05,559 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:24:05,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:24:05,560 INFO L82 PathProgramCache]: Analyzing trace with hash 351230122, now seen corresponding path program 1 times [2018-10-23 22:24:05,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:24:05,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:05,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:24:05,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:05,561 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:24:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:24:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:24:05,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:24:05,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:24:05,818 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:24:05,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:24:05,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:24:05,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:24:05,822 INFO L87 Difference]: Start difference. First operand 24173 states and 34093 transitions. Second operand 4 states. [2018-10-23 22:24:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:24:18,360 INFO L93 Difference]: Finished difference Result 66694 states and 100132 transitions. [2018-10-23 22:24:18,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:24:18,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-10-23 22:24:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:24:18,572 INFO L225 Difference]: With dead ends: 66694 [2018-10-23 22:24:18,572 INFO L226 Difference]: Without dead ends: 42527 [2018-10-23 22:24:18,646 INFO L605 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 [2018-10-23 22:24:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42527 states. [2018-10-23 22:24:19,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42527 to 42465. [2018-10-23 22:24:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42465 states. [2018-10-23 22:24:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42465 states to 42465 states and 59972 transitions. [2018-10-23 22:24:19,720 INFO L78 Accepts]: Start accepts. Automaton has 42465 states and 59972 transitions. Word has length 153 [2018-10-23 22:24:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:24:19,721 INFO L481 AbstractCegarLoop]: Abstraction has 42465 states and 59972 transitions. [2018-10-23 22:24:19,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:24:19,721 INFO L276 IsEmpty]: Start isEmpty. Operand 42465 states and 59972 transitions. [2018-10-23 22:24:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-23 22:24:19,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:24:19,756 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 22:24:19,756 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:24:19,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:24:19,757 INFO L82 PathProgramCache]: Analyzing trace with hash -215837280, now seen corresponding path program 1 times [2018-10-23 22:24:19,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:24:19,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:19,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:24:19,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:19,758 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:24:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:24:20,346 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-10-23 22:24:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-23 22:24:20,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:24:20,864 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:24:20,865 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-10-23 22:24:20,867 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2823], [2825], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-23 22:24:20,943 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:24:20,944 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:24:25,304 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:24:30,519 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:24:30,521 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-23 22:24:30,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:24:30,533 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:24:37,864 INFO L232 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 71.33% of their original sizes. [2018-10-23 22:24:37,865 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:24:39,387 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:24:39,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:24:39,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-23 22:24:39,388 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:24:39,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 22:24:39,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 22:24:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:24:39,390 INFO L87 Difference]: Start difference. First operand 42465 states and 59972 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown