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/Problem03_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 07:18:14,087 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 07:18:14,089 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 07:18:14,105 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 07:18:14,106 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 07:18:14,107 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 07:18:14,109 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 07:18:14,112 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 07:18:14,113 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 07:18:14,115 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 07:18:14,116 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 07:18:14,116 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 07:18:14,119 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 07:18:14,120 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 07:18:14,121 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 07:18:14,124 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 07:18:14,125 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 07:18:14,135 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 07:18:14,139 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 07:18:14,140 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 07:18:14,141 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 07:18:14,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 07:18:14,149 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 07:18:14,149 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 07:18:14,150 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 07:18:14,150 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 07:18:14,155 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 07:18:14,155 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 07:18:14,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 07:18:14,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 07:18:14,161 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 07:18:14,163 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 07:18:14,163 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 07:18:14,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 07:18:14,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 07:18:14,165 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 07:18:14,165 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 07:18:14,187 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 07:18:14,188 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 07:18:14,188 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 07:18:14,189 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 07:18:14,190 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 07:18:14,190 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 07:18:14,190 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 07:18:14,190 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 07:18:14,190 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 07:18:14,191 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 07:18:14,191 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 07:18:14,191 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 07:18:14,191 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 07:18:14,192 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 07:18:14,192 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 07:18:14,192 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 07:18:14,194 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 07:18:14,194 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 07:18:14,195 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 07:18:14,195 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 07:18:14,195 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 07:18:14,195 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 07:18:14,195 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 07:18:14,196 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 07:18:14,196 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 07:18:14,196 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 07:18:14,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 07:18:14,197 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 07:18:14,197 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 07:18:14,197 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 07:18:14,197 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 07:18:14,197 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 07:18:14,197 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 07:18:14,198 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 07:18:14,198 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 07:18:14,198 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 07:18:14,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 07:18:14,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 07:18:14,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 07:18:14,281 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 07:18:14,282 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 07:18:14,282 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53_true-unreach-call.c [2018-11-07 07:18:14,375 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ba532a5/044afd89f94d43a18974c5435ebf613a/FLAG227db0c04 [2018-11-07 07:18:15,109 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 07:18:15,112 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label53_true-unreach-call.c [2018-11-07 07:18:15,132 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ba532a5/044afd89f94d43a18974c5435ebf613a/FLAG227db0c04 [2018-11-07 07:18:15,147 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ba532a5/044afd89f94d43a18974c5435ebf613a [2018-11-07 07:18:15,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 07:18:15,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 07:18:15,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 07:18:15,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 07:18:15,162 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 07:18:15,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:18:15" (1/1) ... [2018-11-07 07:18:15,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c61966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:15, skipping insertion in model container [2018-11-07 07:18:15,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:18:15" (1/1) ... [2018-11-07 07:18:15,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 07:18:15,285 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 07:18:16,094 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:18:16,099 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 07:18:16,325 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:18:16,349 INFO L193 MainTranslator]: Completed translation [2018-11-07 07:18:16,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16 WrapperNode [2018-11-07 07:18:16,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 07:18:16,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 07:18:16,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 07:18:16,351 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 07:18:16,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (1/1) ... [2018-11-07 07:18:16,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (1/1) ... [2018-11-07 07:18:16,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 07:18:16,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 07:18:16,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 07:18:16,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 07:18:16,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (1/1) ... [2018-11-07 07:18:16,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (1/1) ... [2018-11-07 07:18:16,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (1/1) ... [2018-11-07 07:18:16,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (1/1) ... [2018-11-07 07:18:16,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (1/1) ... [2018-11-07 07:18:16,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (1/1) ... [2018-11-07 07:18:16,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (1/1) ... [2018-11-07 07:18:16,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 07:18:16,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 07:18:16,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 07:18:16,721 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 07:18:16,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (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 07:18:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 07:18:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 07:18:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 07:18:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 07:18:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 07:18:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 07:18:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 07:18:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 07:18:16,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 07:18:21,417 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 07:18:21,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:18:21 BoogieIcfgContainer [2018-11-07 07:18:21,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 07:18:21,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 07:18:21,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 07:18:21,423 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 07:18:21,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:18:15" (1/3) ... [2018-11-07 07:18:21,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5546f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:18:21, skipping insertion in model container [2018-11-07 07:18:21,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:16" (2/3) ... [2018-11-07 07:18:21,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5546f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:18:21, skipping insertion in model container [2018-11-07 07:18:21,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:18:21" (3/3) ... [2018-11-07 07:18:21,428 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label53_true-unreach-call.c [2018-11-07 07:18:21,438 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 07:18:21,449 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 07:18:21,469 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 07:18:21,514 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 07:18:21,515 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 07:18:21,515 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 07:18:21,515 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 07:18:21,515 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 07:18:21,515 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 07:18:21,516 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 07:18:21,516 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 07:18:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 07:18:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-11-07 07:18:21,568 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:21,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:21,573 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:21,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:21,579 INFO L82 PathProgramCache]: Analyzing trace with hash 390618596, now seen corresponding path program 1 times [2018-11-07 07:18:21,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:21,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:21,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:21,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:21,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:22,711 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 07:18:22,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:22,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 07:18:22,713 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:22,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 07:18:22,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 07:18:22,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:18:22,734 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 07:18:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:26,069 INFO L93 Difference]: Finished difference Result 1066 states and 1924 transitions. [2018-11-07 07:18:26,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 07:18:26,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2018-11-07 07:18:26,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:26,098 INFO L225 Difference]: With dead ends: 1066 [2018-11-07 07:18:26,098 INFO L226 Difference]: Without dead ends: 748 [2018-11-07 07:18:26,106 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 07:18:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2018-11-07 07:18:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 527. [2018-11-07 07:18:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-11-07 07:18:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 902 transitions. [2018-11-07 07:18:26,199 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 902 transitions. Word has length 201 [2018-11-07 07:18:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:26,201 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 902 transitions. [2018-11-07 07:18:26,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 07:18:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 902 transitions. [2018-11-07 07:18:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 07:18:26,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:26,211 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:18:26,211 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:26,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:26,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1605931427, now seen corresponding path program 1 times [2018-11-07 07:18:26,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:26,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:26,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:26,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:26,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:26,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:26,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:18:26,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:26,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:18:26,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:18:26,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:18:26,545 INFO L87 Difference]: Start difference. First operand 527 states and 902 transitions. Second operand 6 states. [2018-11-07 07:18:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:30,196 INFO L93 Difference]: Finished difference Result 1590 states and 2793 transitions. [2018-11-07 07:18:30,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 07:18:30,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-07 07:18:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:30,215 INFO L225 Difference]: With dead ends: 1590 [2018-11-07 07:18:30,215 INFO L226 Difference]: Without dead ends: 1069 [2018-11-07 07:18:30,220 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:18:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-11-07 07:18:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-11-07 07:18:30,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-11-07 07:18:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1746 transitions. [2018-11-07 07:18:30,299 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1746 transitions. Word has length 211 [2018-11-07 07:18:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:30,300 INFO L480 AbstractCegarLoop]: Abstraction has 1024 states and 1746 transitions. [2018-11-07 07:18:30,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:18:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1746 transitions. [2018-11-07 07:18:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 07:18:30,308 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:30,309 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:18:30,309 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:30,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:30,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1477255851, now seen corresponding path program 1 times [2018-11-07 07:18:30,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:30,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:30,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:30,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:30,311 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:30,565 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:18:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:30,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:30,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 07:18:30,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:30,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 07:18:30,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 07:18:30,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 07:18:30,693 INFO L87 Difference]: Start difference. First operand 1024 states and 1746 transitions. Second operand 5 states. [2018-11-07 07:18:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:34,116 INFO L93 Difference]: Finished difference Result 3166 states and 5674 transitions. [2018-11-07 07:18:34,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:18:34,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2018-11-07 07:18:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:34,145 INFO L225 Difference]: With dead ends: 3166 [2018-11-07 07:18:34,145 INFO L226 Difference]: Without dead ends: 2148 [2018-11-07 07:18:34,153 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:18:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-11-07 07:18:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-11-07 07:18:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-11-07 07:18:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3422 transitions. [2018-11-07 07:18:34,252 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3422 transitions. Word has length 212 [2018-11-07 07:18:34,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:34,252 INFO L480 AbstractCegarLoop]: Abstraction has 2105 states and 3422 transitions. [2018-11-07 07:18:34,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 07:18:34,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3422 transitions. [2018-11-07 07:18:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 07:18:34,263 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:34,264 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:18:34,264 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:34,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:34,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1229236448, now seen corresponding path program 1 times [2018-11-07 07:18:34,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:34,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:34,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:34,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:34,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:34,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:34,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:18:34,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:34,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:18:34,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:18:34,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:18:34,684 INFO L87 Difference]: Start difference. First operand 2105 states and 3422 transitions. Second operand 3 states. [2018-11-07 07:18:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:36,379 INFO L93 Difference]: Finished difference Result 6108 states and 10330 transitions. [2018-11-07 07:18:36,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:18:36,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-11-07 07:18:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:36,406 INFO L225 Difference]: With dead ends: 6108 [2018-11-07 07:18:36,407 INFO L226 Difference]: Without dead ends: 4009 [2018-11-07 07:18:36,418 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:18:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2018-11-07 07:18:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 3973. [2018-11-07 07:18:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3973 states. [2018-11-07 07:18:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 6514 transitions. [2018-11-07 07:18:36,554 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 6514 transitions. Word has length 214 [2018-11-07 07:18:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:36,555 INFO L480 AbstractCegarLoop]: Abstraction has 3973 states and 6514 transitions. [2018-11-07 07:18:36,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:18:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 6514 transitions. [2018-11-07 07:18:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 07:18:36,572 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:36,572 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:18:36,572 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:36,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:36,573 INFO L82 PathProgramCache]: Analyzing trace with hash -565100084, now seen corresponding path program 1 times [2018-11-07 07:18:36,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:36,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:36,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:36,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:36,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:37,029 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 07:18:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:37,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:37,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 07:18:37,359 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:37,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 07:18:37,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 07:18:37,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:18:37,360 INFO L87 Difference]: Start difference. First operand 3973 states and 6514 transitions. Second operand 7 states. [2018-11-07 07:18:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:39,742 INFO L93 Difference]: Finished difference Result 12096 states and 22014 transitions. [2018-11-07 07:18:39,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:18:39,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2018-11-07 07:18:39,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:39,803 INFO L225 Difference]: With dead ends: 12096 [2018-11-07 07:18:39,804 INFO L226 Difference]: Without dead ends: 8129 [2018-11-07 07:18:39,823 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:18:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2018-11-07 07:18:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 7942. [2018-11-07 07:18:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7942 states. [2018-11-07 07:18:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7942 states to 7942 states and 13503 transitions. [2018-11-07 07:18:40,140 INFO L78 Accepts]: Start accepts. Automaton has 7942 states and 13503 transitions. Word has length 220 [2018-11-07 07:18:40,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:40,140 INFO L480 AbstractCegarLoop]: Abstraction has 7942 states and 13503 transitions. [2018-11-07 07:18:40,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 07:18:40,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7942 states and 13503 transitions. [2018-11-07 07:18:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 07:18:40,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:40,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:40,172 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:40,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:40,173 INFO L82 PathProgramCache]: Analyzing trace with hash -314712711, now seen corresponding path program 1 times [2018-11-07 07:18:40,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:40,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:40,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:40,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:40,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:40,454 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:18:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:40,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:40,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:18:40,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:40,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:18:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:18:40,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:18:40,580 INFO L87 Difference]: Start difference. First operand 7942 states and 13503 transitions. Second operand 6 states. [2018-11-07 07:18:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:42,982 INFO L93 Difference]: Finished difference Result 22960 states and 42530 transitions. [2018-11-07 07:18:42,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:18:42,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 225 [2018-11-07 07:18:42,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:43,080 INFO L225 Difference]: With dead ends: 22960 [2018-11-07 07:18:43,081 INFO L226 Difference]: Without dead ends: 15024 [2018-11-07 07:18:43,116 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:18:43,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15024 states. [2018-11-07 07:18:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15024 to 14866. [2018-11-07 07:18:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14866 states. [2018-11-07 07:18:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14866 states to 14866 states and 24364 transitions. [2018-11-07 07:18:43,594 INFO L78 Accepts]: Start accepts. Automaton has 14866 states and 24364 transitions. Word has length 225 [2018-11-07 07:18:43,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:43,594 INFO L480 AbstractCegarLoop]: Abstraction has 14866 states and 24364 transitions. [2018-11-07 07:18:43,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:18:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 14866 states and 24364 transitions. [2018-11-07 07:18:43,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-11-07 07:18:43,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:43,652 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:43,653 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:43,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:43,653 INFO L82 PathProgramCache]: Analyzing trace with hash 732116718, now seen corresponding path program 1 times [2018-11-07 07:18:43,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:43,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:43,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:43,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:43,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:44,310 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 07:18:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:18:44,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:44,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:18:44,661 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:44,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:18:44,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:18:44,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:18:44,663 INFO L87 Difference]: Start difference. First operand 14866 states and 24364 transitions. Second operand 6 states. [2018-11-07 07:18:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:49,700 INFO L93 Difference]: Finished difference Result 31818 states and 52440 transitions. [2018-11-07 07:18:49,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 07:18:49,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2018-11-07 07:18:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:49,776 INFO L225 Difference]: With dead ends: 31818 [2018-11-07 07:18:49,776 INFO L226 Difference]: Without dead ends: 16918 [2018-11-07 07:18:49,820 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:18:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16918 states. [2018-11-07 07:18:50,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16918 to 16916. [2018-11-07 07:18:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16916 states. [2018-11-07 07:18:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16916 states to 16916 states and 26691 transitions. [2018-11-07 07:18:50,225 INFO L78 Accepts]: Start accepts. Automaton has 16916 states and 26691 transitions. Word has length 249 [2018-11-07 07:18:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:50,226 INFO L480 AbstractCegarLoop]: Abstraction has 16916 states and 26691 transitions. [2018-11-07 07:18:50,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:18:50,226 INFO L276 IsEmpty]: Start isEmpty. Operand 16916 states and 26691 transitions. [2018-11-07 07:18:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-11-07 07:18:50,288 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:50,288 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:18:50,288 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:50,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:50,289 INFO L82 PathProgramCache]: Analyzing trace with hash 646437938, now seen corresponding path program 1 times [2018-11-07 07:18:50,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:50,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:50,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:50,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:50,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:51,140 WARN L179 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 11 [2018-11-07 07:18:51,410 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 07:18:51,855 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-07 07:18:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:52,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:52,086 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:18:52,087 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 281 with the following transitions: [2018-11-07 07:18:52,090 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1069], [1071], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:18:52,165 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:18:52,166 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:18:53,345 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:18:53,346 INFO L272 AbstractInterpreter]: Visited 201 different actions 201 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 07:18:53,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:53,392 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:18:54,953 INFO L227 lantSequenceWeakener]: Weakened 274 states. On average, predicates are now at 73.46% of their original sizes. [2018-11-07 07:18:54,954 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:18:55,888 INFO L415 sIntCurrentIteration]: We unified 279 AI predicates to 279 [2018-11-07 07:18:55,889 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:18:55,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:18:55,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-07 07:18:55,890 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:55,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 07:18:55,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 07:18:55,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:18:55,892 INFO L87 Difference]: Start difference. First operand 16916 states and 26691 transitions. Second operand 11 states. [2018-11-07 07:19:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:19,314 INFO L93 Difference]: Finished difference Result 34036 states and 53646 transitions. [2018-11-07 07:19:19,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 07:19:19,314 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 280 [2018-11-07 07:19:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:19,377 INFO L225 Difference]: With dead ends: 34036 [2018-11-07 07:19:19,377 INFO L226 Difference]: Without dead ends: 17126 [2018-11-07 07:19:19,426 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 280 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-11-07 07:19:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17126 states. [2018-11-07 07:19:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17126 to 17124. [2018-11-07 07:19:19,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17124 states. [2018-11-07 07:19:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17124 states to 17124 states and 26909 transitions. [2018-11-07 07:19:19,839 INFO L78 Accepts]: Start accepts. Automaton has 17124 states and 26909 transitions. Word has length 280 [2018-11-07 07:19:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:19:19,839 INFO L480 AbstractCegarLoop]: Abstraction has 17124 states and 26909 transitions. [2018-11-07 07:19:19,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 07:19:19,839 INFO L276 IsEmpty]: Start isEmpty. Operand 17124 states and 26909 transitions. [2018-11-07 07:19:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-11-07 07:19:19,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:19:19,879 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:19,880 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:19:19,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:19,880 INFO L82 PathProgramCache]: Analyzing trace with hash 277054773, now seen corresponding path program 1 times [2018-11-07 07:19:19,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:19:19,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:19,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:19,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:19,882 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:19:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:19:20,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:20,770 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:19:20,770 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 293 with the following transitions: [2018-11-07 07:19:20,771 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1069], [1071], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:19:20,782 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:19:20,782 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:19:21,662 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:19:21,662 INFO L272 AbstractInterpreter]: Visited 205 different actions 404 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:19:21,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:21,667 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:19:22,553 INFO L227 lantSequenceWeakener]: Weakened 289 states. On average, predicates are now at 73.88% of their original sizes. [2018-11-07 07:19:22,554 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:19:23,403 INFO L415 sIntCurrentIteration]: We unified 291 AI predicates to 291 [2018-11-07 07:19:23,404 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:19:23,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:19:23,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [9] total 25 [2018-11-07 07:19:23,405 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:19:23,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 07:19:23,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 07:19:23,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-11-07 07:19:23,406 INFO L87 Difference]: Start difference. First operand 17124 states and 26909 transitions. Second operand 18 states. [2018-11-07 07:19:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:48,886 INFO L93 Difference]: Finished difference Result 34248 states and 53886 transitions. [2018-11-07 07:19:48,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 07:19:48,887 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 292 [2018-11-07 07:19:48,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:48,943 INFO L225 Difference]: With dead ends: 34248 [2018-11-07 07:19:48,943 INFO L226 Difference]: Without dead ends: 17338 [2018-11-07 07:19:48,974 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 300 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2018-11-07 07:19:48,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17338 states. [2018-11-07 07:19:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17338 to 17335. [2018-11-07 07:19:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17335 states. [2018-11-07 07:19:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17335 states to 17335 states and 27138 transitions. [2018-11-07 07:19:49,364 INFO L78 Accepts]: Start accepts. Automaton has 17335 states and 27138 transitions. Word has length 292 [2018-11-07 07:19:49,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:19:49,365 INFO L480 AbstractCegarLoop]: Abstraction has 17335 states and 27138 transitions. [2018-11-07 07:19:49,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 07:19:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 17335 states and 27138 transitions. [2018-11-07 07:19:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-11-07 07:19:49,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:19:49,404 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:19:49,404 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:19:49,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:49,405 INFO L82 PathProgramCache]: Analyzing trace with hash 281948138, now seen corresponding path program 1 times [2018-11-07 07:19:49,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:19:49,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:49,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:49,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:49,406 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:19:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:19:49,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:19:49,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:19:49,799 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:19:49,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:19:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:19:49,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:19:49,801 INFO L87 Difference]: Start difference. First operand 17335 states and 27138 transitions. Second operand 3 states. [2018-11-07 07:19:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:51,657 INFO L93 Difference]: Finished difference Result 45790 states and 74195 transitions. [2018-11-07 07:19:51,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:19:51,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2018-11-07 07:19:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:51,768 INFO L225 Difference]: With dead ends: 45790 [2018-11-07 07:19:51,768 INFO L226 Difference]: Without dead ends: 28880 [2018-11-07 07:19:51,821 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:19:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28880 states. [2018-11-07 07:19:52,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28880 to 28761. [2018-11-07 07:19:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28761 states. [2018-11-07 07:19:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28761 states to 28761 states and 43456 transitions. [2018-11-07 07:19:52,794 INFO L78 Accepts]: Start accepts. Automaton has 28761 states and 43456 transitions. Word has length 308 [2018-11-07 07:19:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:19:52,795 INFO L480 AbstractCegarLoop]: Abstraction has 28761 states and 43456 transitions. [2018-11-07 07:19:52,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:19:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 28761 states and 43456 transitions. [2018-11-07 07:19:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-11-07 07:19:52,849 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:19:52,849 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:19:52,849 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:19:52,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:52,850 INFO L82 PathProgramCache]: Analyzing trace with hash -2134481765, now seen corresponding path program 1 times [2018-11-07 07:19:52,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:19:52,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:52,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:52,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:52,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:19:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:19:53,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:53,414 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:19:53,414 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 331 with the following transitions: [2018-11-07 07:19:53,414 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1069], [1071], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:19:53,428 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:19:53,428 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:19:54,506 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:19:54,506 INFO L272 AbstractInterpreter]: Visited 206 different actions 615 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:19:54,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:54,514 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:19:54,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:54,514 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 07:19:54,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:54,525 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:19:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:54,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:19:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:19:55,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:19:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:19:55,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:19:55,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 07:19:55,261 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:19:55,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 07:19:55,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 07:19:55,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:19:55,263 INFO L87 Difference]: Start difference. First operand 28761 states and 43456 transitions. Second operand 7 states. [2018-11-07 07:20:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:20:02,546 INFO L93 Difference]: Finished difference Result 97842 states and 164040 transitions. [2018-11-07 07:20:02,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 07:20:02,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2018-11-07 07:20:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:20:02,922 INFO L225 Difference]: With dead ends: 97842 [2018-11-07 07:20:02,922 INFO L226 Difference]: Without dead ends: 69506 [2018-11-07 07:20:03,165 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 659 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:20:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69506 states. [2018-11-07 07:20:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69506 to 68166. [2018-11-07 07:20:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68166 states. [2018-11-07 07:20:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68166 states to 68166 states and 98765 transitions. [2018-11-07 07:20:05,275 INFO L78 Accepts]: Start accepts. Automaton has 68166 states and 98765 transitions. Word has length 330 [2018-11-07 07:20:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:20:05,276 INFO L480 AbstractCegarLoop]: Abstraction has 68166 states and 98765 transitions. [2018-11-07 07:20:05,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 07:20:05,276 INFO L276 IsEmpty]: Start isEmpty. Operand 68166 states and 98765 transitions. [2018-11-07 07:20:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-07 07:20:05,490 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:20:05,491 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:05,491 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:20:05,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:05,491 INFO L82 PathProgramCache]: Analyzing trace with hash 877879966, now seen corresponding path program 1 times [2018-11-07 07:20:05,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:20:05,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:05,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:05,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:05,493 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:20:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 170 proven. 63 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-07 07:20:06,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:06,172 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:20:06,173 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-11-07 07:20:06,173 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1069], [1071], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:20:06,180 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:20:06,180 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:20:08,251 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:20:08,251 INFO L272 AbstractInterpreter]: Visited 208 different actions 621 times. Merged at 8 different actions 21 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:20:08,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:08,279 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:20:08,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:08,279 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 07:20:08,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:08,298 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:20:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:08,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:20:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-07 07:20:09,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:20:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-07 07:20:09,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:20:09,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 07:20:09,443 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:20:09,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:20:09,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:20:09,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:20:09,445 INFO L87 Difference]: Start difference. First operand 68166 states and 98765 transitions. Second operand 9 states. [2018-11-07 07:20:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:20:14,357 INFO L93 Difference]: Finished difference Result 137600 states and 209268 transitions. [2018-11-07 07:20:14,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 07:20:14,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 335 [2018-11-07 07:20:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:20:14,705 INFO L225 Difference]: With dead ends: 137600 [2018-11-07 07:20:14,705 INFO L226 Difference]: Without dead ends: 69648 [2018-11-07 07:20:14,896 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 672 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-11-07 07:20:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69648 states. [2018-11-07 07:20:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69648 to 68049. [2018-11-07 07:20:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68049 states. [2018-11-07 07:20:16,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68049 states to 68049 states and 91664 transitions. [2018-11-07 07:20:16,546 INFO L78 Accepts]: Start accepts. Automaton has 68049 states and 91664 transitions. Word has length 335 [2018-11-07 07:20:16,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:20:16,547 INFO L480 AbstractCegarLoop]: Abstraction has 68049 states and 91664 transitions. [2018-11-07 07:20:16,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:20:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand 68049 states and 91664 transitions. [2018-11-07 07:20:16,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-07 07:20:16,627 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:20:16,627 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:16,628 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:20:16,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1731816398, now seen corresponding path program 1 times [2018-11-07 07:20:16,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:20:16,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:16,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:16,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:16,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:20:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:17,012 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:20:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 146 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:20:17,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:17,951 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:20:17,951 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 353 with the following transitions: [2018-11-07 07:20:17,952 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [190], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1069], [1071], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:20:17,957 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:20:17,958 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:20:19,081 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:20:19,081 INFO L272 AbstractInterpreter]: Visited 205 different actions 404 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:20:19,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:19,123 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:20:20,098 INFO L227 lantSequenceWeakener]: Weakened 349 states. On average, predicates are now at 74.33% of their original sizes. [2018-11-07 07:20:20,098 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:20:20,305 INFO L415 sIntCurrentIteration]: We unified 351 AI predicates to 351 [2018-11-07 07:20:20,305 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:20:20,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:20:20,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2018-11-07 07:20:20,306 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:20:20,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 07:20:20,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 07:20:20,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-11-07 07:20:20,308 INFO L87 Difference]: Start difference. First operand 68049 states and 91664 transitions. Second operand 16 states. [2018-11-07 07:20:51,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:20:51,853 INFO L93 Difference]: Finished difference Result 147190 states and 198360 transitions. [2018-11-07 07:20:51,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 07:20:51,853 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 352 [2018-11-07 07:20:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:20:52,152 INFO L225 Difference]: With dead ends: 147190 [2018-11-07 07:20:52,153 INFO L226 Difference]: Without dead ends: 79566 [2018-11-07 07:20:52,298 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 359 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2018-11-07 07:20:52,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79566 states. [2018-11-07 07:20:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79566 to 79555. [2018-11-07 07:20:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79555 states. [2018-11-07 07:20:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79555 states to 79555 states and 104973 transitions. [2018-11-07 07:20:53,837 INFO L78 Accepts]: Start accepts. Automaton has 79555 states and 104973 transitions. Word has length 352 [2018-11-07 07:20:53,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:20:53,838 INFO L480 AbstractCegarLoop]: Abstraction has 79555 states and 104973 transitions. [2018-11-07 07:20:53,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 07:20:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 79555 states and 104973 transitions. [2018-11-07 07:20:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-11-07 07:20:53,902 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:20:53,903 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:53,903 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:20:53,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:53,903 INFO L82 PathProgramCache]: Analyzing trace with hash -652570763, now seen corresponding path program 1 times [2018-11-07 07:20:53,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:20:53,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:53,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:53,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:53,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:20:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:54,331 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:20:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 143 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:20:54,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:54,435 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:20:54,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 359 with the following transitions: [2018-11-07 07:20:54,435 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [661], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1069], [1071], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:20:54,440 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:20:54,440 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:20:55,989 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:20:55,989 INFO L272 AbstractInterpreter]: Visited 206 different actions 612 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:20:55,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:55,995 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:20:55,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:55,995 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 07:20:56,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:56,004 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:20:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:56,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:20:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:20:56,460 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:20:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:20:56,727 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:20:56,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 07:20:56,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:20:56,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:20:56,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:20:56,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:20:56,729 INFO L87 Difference]: Start difference. First operand 79555 states and 104973 transitions. Second operand 3 states. [2018-11-07 07:20:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:20:58,919 INFO L93 Difference]: Finished difference Result 153744 states and 204096 transitions. [2018-11-07 07:20:58,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:20:58,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 358 [2018-11-07 07:20:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:20:59,185 INFO L225 Difference]: With dead ends: 153744 [2018-11-07 07:20:59,185 INFO L226 Difference]: Without dead ends: 74824 [2018-11-07 07:20:59,337 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 716 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:20:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74824 states. [2018-11-07 07:21:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74824 to 72113. [2018-11-07 07:21:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72113 states. [2018-11-07 07:21:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72113 states to 72113 states and 92901 transitions. [2018-11-07 07:21:00,597 INFO L78 Accepts]: Start accepts. Automaton has 72113 states and 92901 transitions. Word has length 358 [2018-11-07 07:21:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:21:00,598 INFO L480 AbstractCegarLoop]: Abstraction has 72113 states and 92901 transitions. [2018-11-07 07:21:00,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:21:00,598 INFO L276 IsEmpty]: Start isEmpty. Operand 72113 states and 92901 transitions. [2018-11-07 07:21:01,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-11-07 07:21:01,325 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:21:01,326 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:21:01,326 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:21:01,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:21:01,326 INFO L82 PathProgramCache]: Analyzing trace with hash -277489027, now seen corresponding path program 1 times [2018-11-07 07:21:01,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:21:01,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:21:01,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:21:01,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:21:01,327 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:21:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:21:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 176 proven. 58 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-07 07:21:01,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:21:01,903 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:21:01,903 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 362 with the following transitions: [2018-11-07 07:21:01,903 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1069], [1071], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:21:01,908 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:21:01,908 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:21:02,866 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:21:02,867 INFO L272 AbstractInterpreter]: Visited 207 different actions 622 times. Merged at 8 different actions 25 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:21:02,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:21:02,876 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:21:02,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:21:02,876 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 07:21:02,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:21:02,887 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:21:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:21:03,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:21:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 156 proven. 74 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 07:21:03,501 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:21:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 07:21:04,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:21:04,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-11-07 07:21:04,356 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:21:04,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 07:21:04,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 07:21:04,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:21:04,358 INFO L87 Difference]: Start difference. First operand 72113 states and 92901 transitions. Second operand 8 states. [2018-11-07 07:21:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:21:11,810 INFO L93 Difference]: Finished difference Result 172446 states and 225439 transitions. [2018-11-07 07:21:11,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 07:21:11,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 361 [2018-11-07 07:21:11,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:21:12,071 INFO L225 Difference]: With dead ends: 172446 [2018-11-07 07:21:12,071 INFO L226 Difference]: Without dead ends: 99902 [2018-11-07 07:21:12,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 742 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 07:21:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99902 states. [2018-11-07 07:21:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99902 to 98812. [2018-11-07 07:21:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98812 states. [2018-11-07 07:21:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98812 states to 98812 states and 120170 transitions. [2018-11-07 07:21:14,142 INFO L78 Accepts]: Start accepts. Automaton has 98812 states and 120170 transitions. Word has length 361 [2018-11-07 07:21:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:21:14,143 INFO L480 AbstractCegarLoop]: Abstraction has 98812 states and 120170 transitions. [2018-11-07 07:21:14,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 07:21:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 98812 states and 120170 transitions. [2018-11-07 07:21:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-11-07 07:21:14,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:21:14,205 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:21:14,205 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:21:14,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:21:14,206 INFO L82 PathProgramCache]: Analyzing trace with hash -676844180, now seen corresponding path program 1 times [2018-11-07 07:21:14,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:21:14,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:21:14,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:21:14,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:21:14,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:21:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:21:14,874 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2018-11-07 07:21:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 181 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:21:17,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:21:17,136 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:21:17,136 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 388 with the following transitions: [2018-11-07 07:21:17,137 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [460], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1069], [1071], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:21:17,142 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:21:17,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:21:17,715 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:21:17,716 INFO L272 AbstractInterpreter]: Visited 205 different actions 404 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:21:17,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:21:17,725 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:21:18,527 INFO L227 lantSequenceWeakener]: Weakened 384 states. On average, predicates are now at 73.51% of their original sizes. [2018-11-07 07:21:18,527 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:21:18,775 INFO L415 sIntCurrentIteration]: We unified 386 AI predicates to 386 [2018-11-07 07:21:18,776 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:21:18,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:21:18,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [17] total 31 [2018-11-07 07:21:18,776 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:21:18,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 07:21:18,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 07:21:18,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-11-07 07:21:18,777 INFO L87 Difference]: Start difference. First operand 98812 states and 120170 transitions. Second operand 16 states. [2018-11-07 07:21:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:21:38,605 INFO L93 Difference]: Finished difference Result 197203 states and 239944 transitions. [2018-11-07 07:21:38,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 07:21:38,605 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 387 [2018-11-07 07:21:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:21:38,843 INFO L225 Difference]: With dead ends: 197203 [2018-11-07 07:21:38,843 INFO L226 Difference]: Without dead ends: 99028 [2018-11-07 07:21:38,947 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 395 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2018-11-07 07:21:39,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99028 states. [2018-11-07 07:21:40,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99028 to 99022. [2018-11-07 07:21:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99022 states. [2018-11-07 07:21:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99022 states to 99022 states and 120385 transitions. [2018-11-07 07:21:40,618 INFO L78 Accepts]: Start accepts. Automaton has 99022 states and 120385 transitions. Word has length 387 [2018-11-07 07:21:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:21:40,619 INFO L480 AbstractCegarLoop]: Abstraction has 99022 states and 120385 transitions. [2018-11-07 07:21:40,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 07:21:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 99022 states and 120385 transitions. [2018-11-07 07:21:40,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-11-07 07:21:40,702 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:21:40,702 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:21:40,702 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:21:40,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:21:40,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1836510567, now seen corresponding path program 1 times [2018-11-07 07:21:40,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:21:40,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:21:40,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:21:40,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:21:40,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:21:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:21:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 239 proven. 57 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-11-07 07:21:41,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:21:41,209 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:21:41,209 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 426 with the following transitions: [2018-11-07 07:21:41,209 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [661], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1069], [1071], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:21:41,213 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:21:41,214 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:21:43,104 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:21:43,104 INFO L272 AbstractInterpreter]: Visited 208 different actions 622 times. Merged at 9 different actions 22 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:21:43,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:21:43,105 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:21:43,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:21:43,105 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 07:21:43,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:21:43,116 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:21:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:21:43,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:21:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-11-07 07:21:43,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:21:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-11-07 07:21:43,686 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:21:43,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 4 [2018-11-07 07:21:43,687 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:21:43,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:21:43,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:21:43,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:21:43,688 INFO L87 Difference]: Start difference. First operand 99022 states and 120385 transitions. Second operand 3 states. Received shutdown request... [2018-11-07 07:21:44,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:21:44,295 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 07:21:44,301 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 07:21:44,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:21:44 BoogieIcfgContainer [2018-11-07 07:21:44,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 07:21:44,303 INFO L168 Benchmark]: Toolchain (without parser) took 209145.97 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -830.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 07:21:44,304 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 07:21:44,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1191.50 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 07:21:44,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 232.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.8 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-11-07 07:21:44,306 INFO L168 Benchmark]: Boogie Preprocessor took 137.08 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 07:21:44,306 INFO L168 Benchmark]: RCFGBuilder took 4697.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 7.1 GB. [2018-11-07 07:21:44,307 INFO L168 Benchmark]: TraceAbstraction took 202882.64 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -299.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 07:21:44,311 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1191.50 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 232.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.8 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.08 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4697.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202882.64 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -299.5 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: 1617]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1617). Cancelled while BasicCegarLoop was constructing difference of abstraction (99022states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (2508 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 202.7s OverallTime, 17 OverallIterations, 5 TraceHistogramMax, 150.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3679 SDtfs, 18445 SDslu, 5093 SDs, 0 SdLazy, 27688 SolverSat, 3983 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 5116 GetRequests, 4915 SyntacticMatches, 22 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99022occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.5s AbstIntTime, 9 AbstIntIterations, 4 AbstIntStrong, 0.9993702887089575 AbsIntWeakeningRatio, 0.18286151491966335 AbsIntAvgWeakeningVarsNumRemoved, 59.23565416985463 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 7573 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 6769 NumberOfCodeBlocks, 6769 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 8551 ConstructedInterpolants, 0 QuantifiedInterpolants, 11886427 SizeOfPredicates, 7 NumberOfNonLiveVariables, 6653 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 27 InterpolantComputations, 12 PerfectInterpolantSequences, 3860/4358 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown