java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:26:20,100 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:26:20,102 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:26:20,114 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:26:20,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:26:20,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:26:20,117 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:26:20,119 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:26:20,121 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:26:20,121 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:26:20,122 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:26:20,123 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:26:20,123 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:26:20,124 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:26:20,126 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:26:20,126 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:26:20,127 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:26:20,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:26:20,131 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:26:20,132 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:26:20,134 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:26:20,135 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:26:20,137 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:26:20,138 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:26:20,138 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:26:20,139 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:26:20,140 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:26:20,141 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:26:20,141 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:26:20,142 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:26:20,143 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:26:20,143 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:26:20,144 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:26:20,144 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:26:20,147 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:26:20,148 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:26:20,148 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:26:20,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:26:20,181 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:26:20,184 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:26:20,184 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:26:20,185 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:26:20,185 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:26:20,185 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:26:20,185 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:26:20,186 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:26:20,186 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:26:20,186 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:26:20,186 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:26:20,186 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:26:20,187 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:26:20,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:26:20,188 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:26:20,190 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:26:20,190 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:26:20,191 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:26:20,191 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:26:20,191 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:26:20,191 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:26:20,191 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:26:20,192 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:26:20,192 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:26:20,192 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:26:20,192 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:26:20,192 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:26:20,193 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:26:20,195 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:26:20,195 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:26:20,195 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:26:20,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:26:20,196 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:26:20,196 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:26:20,196 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:26:20,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:26:20,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:26:20,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:26:20,296 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:26:20,296 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:26:20,297 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label50_true-unreach-call.c [2018-10-27 08:26:20,357 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c73b4423/f92e1d3c2e3c42b5b6b08d4ef2f51cad/FLAGa36d06e90 [2018-10-27 08:26:21,020 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:26:21,020 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label50_true-unreach-call.c [2018-10-27 08:26:21,041 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c73b4423/f92e1d3c2e3c42b5b6b08d4ef2f51cad/FLAGa36d06e90 [2018-10-27 08:26:21,062 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c73b4423/f92e1d3c2e3c42b5b6b08d4ef2f51cad [2018-10-27 08:26:21,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:26:21,076 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:26:21,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:26:21,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:26:21,081 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:26:21,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:26:21" (1/1) ... [2018-10-27 08:26:21,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce1be01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:21, skipping insertion in model container [2018-10-27 08:26:21,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:26:21" (1/1) ... [2018-10-27 08:26:21,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:26:21,189 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:26:21,930 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:26:21,935 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:26:22,209 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:26:22,231 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:26:22,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22 WrapperNode [2018-10-27 08:26:22,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:26:22,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:26:22,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:26:22,233 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:26:22,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... [2018-10-27 08:26:22,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... [2018-10-27 08:26:22,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:26:22,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:26:22,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:26:22,606 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:26:22,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... [2018-10-27 08:26:22,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... [2018-10-27 08:26:22,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... [2018-10-27 08:26:22,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... [2018-10-27 08:26:22,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... [2018-10-27 08:26:22,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... [2018-10-27 08:26:22,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... [2018-10-27 08:26:22,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:26:22,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:26:22,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:26:22,796 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:26:22,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:26:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:26:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:26:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:26:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:26:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:26:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:26:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:26:22,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:26:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:26:22,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:26:30,428 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:26:30,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:26:30 BoogieIcfgContainer [2018-10-27 08:26:30,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:26:30,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:26:30,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:26:30,434 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:26:30,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:26:21" (1/3) ... [2018-10-27 08:26:30,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78060cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:26:30, skipping insertion in model container [2018-10-27 08:26:30,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:22" (2/3) ... [2018-10-27 08:26:30,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78060cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:26:30, skipping insertion in model container [2018-10-27 08:26:30,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:26:30" (3/3) ... [2018-10-27 08:26:30,439 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label50_true-unreach-call.c [2018-10-27 08:26:30,449 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:26:30,459 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:26:30,478 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:26:30,522 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:26:30,522 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:26:30,522 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:26:30,522 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:26:30,522 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:26:30,523 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:26:30,523 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:26:30,523 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:26:30,557 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 08:26:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-27 08:26:30,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:26:30,569 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] [2018-10-27 08:26:30,572 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:26:30,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1374048196, now seen corresponding path program 1 times [2018-10-27 08:26:30,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:26:30,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:30,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:30,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:30,638 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:26:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:31,127 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 08:26:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:26:31,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:26:31,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:26:31,172 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:26:31,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:26:31,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:26:31,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:26:31,200 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 08:26:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:26:37,582 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 08:26:37,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:26:37,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-27 08:26:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:26:37,613 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 08:26:37,614 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 08:26:37,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:26:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 08:26:37,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-10-27 08:26:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-10-27 08:26:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-10-27 08:26:37,760 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 52 [2018-10-27 08:26:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:26:37,761 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-10-27 08:26:37,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:26:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-10-27 08:26:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-27 08:26:37,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:26:37,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:26:37,775 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:26:37,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:37,775 INFO L82 PathProgramCache]: Analyzing trace with hash -2033575421, now seen corresponding path program 1 times [2018-10-27 08:26:37,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:26:37,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:37,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:37,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:37,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:26:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:26:38,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:26:38,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:26:38,247 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:26:38,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:26:38,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:26:38,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:26:38,251 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-10-27 08:26:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:26:44,908 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-10-27 08:26:44,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:26:44,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-27 08:26:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:26:44,940 INFO L225 Difference]: With dead ends: 3259 [2018-10-27 08:26:44,940 INFO L226 Difference]: Without dead ends: 2168 [2018-10-27 08:26:44,947 INFO L605 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 [2018-10-27 08:26:44,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-10-27 08:26:45,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-10-27 08:26:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-10-27 08:26:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-10-27 08:26:45,078 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 123 [2018-10-27 08:26:45,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:26:45,078 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-10-27 08:26:45,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:26:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-10-27 08:26:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-27 08:26:45,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:26:45,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:26:45,094 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:26:45,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:45,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1172506123, now seen corresponding path program 1 times [2018-10-27 08:26:45,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:26:45,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:45,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:45,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:45,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:26:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:26:45,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:26:45,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:26:45,364 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:26:45,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:26:45,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:26:45,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:26:45,366 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-10-27 08:26:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:26:52,459 INFO L93 Difference]: Finished difference Result 7393 states and 13323 transitions. [2018-10-27 08:26:52,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:26:52,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-27 08:26:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:26:52,514 INFO L225 Difference]: With dead ends: 7393 [2018-10-27 08:26:52,514 INFO L226 Difference]: Without dead ends: 5257 [2018-10-27 08:26:52,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:26:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2018-10-27 08:26:52,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 5219. [2018-10-27 08:26:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5219 states. [2018-10-27 08:26:52,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 8511 transitions. [2018-10-27 08:26:52,736 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 8511 transitions. Word has length 151 [2018-10-27 08:26:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:26:52,737 INFO L481 AbstractCegarLoop]: Abstraction has 5219 states and 8511 transitions. [2018-10-27 08:26:52,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:26:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 8511 transitions. [2018-10-27 08:26:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-27 08:26:52,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:26:52,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:26:52,742 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:26:52,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:52,743 INFO L82 PathProgramCache]: Analyzing trace with hash 405483975, now seen corresponding path program 1 times [2018-10-27 08:26:52,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:26:52,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:52,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:52,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:52,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:26:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:53,093 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:26:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:26:53,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:26:53,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:26:53,492 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:26:53,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:26:53,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:26:53,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:26:53,493 INFO L87 Difference]: Start difference. First operand 5219 states and 8511 transitions. Second operand 6 states. [2018-10-27 08:26:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:26:56,347 INFO L93 Difference]: Finished difference Result 12593 states and 21248 transitions. [2018-10-27 08:26:56,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:26:56,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-10-27 08:26:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:26:56,401 INFO L225 Difference]: With dead ends: 12593 [2018-10-27 08:26:56,401 INFO L226 Difference]: Without dead ends: 7380 [2018-10-27 08:26:56,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:26:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7380 states. [2018-10-27 08:26:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 7319. [2018-10-27 08:26:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7319 states. [2018-10-27 08:26:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 10431 transitions. [2018-10-27 08:26:56,653 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 10431 transitions. Word has length 169 [2018-10-27 08:26:56,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:26:56,654 INFO L481 AbstractCegarLoop]: Abstraction has 7319 states and 10431 transitions. [2018-10-27 08:26:56,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:26:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 10431 transitions. [2018-10-27 08:26:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-27 08:26:56,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:26:56,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:26:56,661 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:26:56,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:56,661 INFO L82 PathProgramCache]: Analyzing trace with hash 573454830, now seen corresponding path program 1 times [2018-10-27 08:26:56,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:26:56,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:56,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:56,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:56,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:26:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:57,029 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:26:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:26:57,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:26:57,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:26:57,266 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:26:57,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:26:57,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:26:57,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:26:57,267 INFO L87 Difference]: Start difference. First operand 7319 states and 10431 transitions. Second operand 6 states. [2018-10-27 08:27:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:27:01,411 INFO L93 Difference]: Finished difference Result 18393 states and 26490 transitions. [2018-10-27 08:27:01,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:27:01,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-10-27 08:27:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:27:01,489 INFO L225 Difference]: With dead ends: 18393 [2018-10-27 08:27:01,489 INFO L226 Difference]: Without dead ends: 11080 [2018-10-27 08:27:01,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:27:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11080 states. [2018-10-27 08:27:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11080 to 11044. [2018-10-27 08:27:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11044 states. [2018-10-27 08:27:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11044 states to 11044 states and 14978 transitions. [2018-10-27 08:27:01,810 INFO L78 Accepts]: Start accepts. Automaton has 11044 states and 14978 transitions. Word has length 216 [2018-10-27 08:27:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:27:01,811 INFO L481 AbstractCegarLoop]: Abstraction has 11044 states and 14978 transitions. [2018-10-27 08:27:01,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:27:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 11044 states and 14978 transitions. [2018-10-27 08:27:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-27 08:27:01,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:27:01,817 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:27:01,817 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:27:01,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:01,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1283886317, now seen corresponding path program 1 times [2018-10-27 08:27:01,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:27:01,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:01,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:27:01,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:01,819 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:27:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:27:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-27 08:27:02,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:27:02,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:27:02,072 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:27:02,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:27:02,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:27:02,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:27:02,075 INFO L87 Difference]: Start difference. First operand 11044 states and 14978 transitions. Second operand 4 states. [2018-10-27 08:27:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:27:05,925 INFO L93 Difference]: Finished difference Result 27867 states and 38539 transitions. [2018-10-27 08:27:05,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:27:05,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2018-10-27 08:27:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:27:06,009 INFO L225 Difference]: With dead ends: 27867 [2018-10-27 08:27:06,009 INFO L226 Difference]: Without dead ends: 16829 [2018-10-27 08:27:06,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:27:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16829 states. [2018-10-27 08:27:06,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16829 to 16829. [2018-10-27 08:27:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16829 states. [2018-10-27 08:27:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16829 states to 16829 states and 21952 transitions. [2018-10-27 08:27:06,436 INFO L78 Accepts]: Start accepts. Automaton has 16829 states and 21952 transitions. Word has length 253 [2018-10-27 08:27:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:27:06,437 INFO L481 AbstractCegarLoop]: Abstraction has 16829 states and 21952 transitions. [2018-10-27 08:27:06,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:27:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16829 states and 21952 transitions. [2018-10-27 08:27:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-10-27 08:27:06,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:27:06,478 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:27:06,478 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:27:06,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:06,483 INFO L82 PathProgramCache]: Analyzing trace with hash -207588909, now seen corresponding path program 1 times [2018-10-27 08:27:06,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:27:06,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:06,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:27:06,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:06,490 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:27:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:27:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 254 proven. 115 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-27 08:27:07,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:27:07,150 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:27:07,151 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 438 with the following transitions: [2018-10-27 08:27:07,153 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [495], [497], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:27:07,204 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:27:07,204 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:27:07,771 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:27:07,773 INFO L272 AbstractInterpreter]: Visited 145 different actions 145 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:27:07,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:07,806 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:27:08,711 INFO L227 lantSequenceWeakener]: Weakened 425 states. On average, predicates are now at 77.68% of their original sizes. [2018-10-27 08:27:08,712 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:27:08,976 INFO L415 sIntCurrentIteration]: We unified 436 AI predicates to 436 [2018-10-27 08:27:08,976 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:27:08,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:27:08,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:27:08,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:27:08,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:27:08,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:27:08,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:27:08,979 INFO L87 Difference]: Start difference. First operand 16829 states and 21952 transitions. Second operand 6 states. [2018-10-27 08:27:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:27:47,966 INFO L93 Difference]: Finished difference Result 33992 states and 44289 transitions. [2018-10-27 08:27:47,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:27:47,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 437 [2018-10-27 08:27:47,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:27:48,028 INFO L225 Difference]: With dead ends: 33992 [2018-10-27 08:27:48,029 INFO L226 Difference]: Without dead ends: 17169 [2018-10-27 08:27:48,092 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 437 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:27:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17169 states. [2018-10-27 08:27:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17169 to 17167. [2018-10-27 08:27:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17167 states. [2018-10-27 08:27:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17167 states to 17167 states and 22299 transitions. [2018-10-27 08:27:48,466 INFO L78 Accepts]: Start accepts. Automaton has 17167 states and 22299 transitions. Word has length 437 [2018-10-27 08:27:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:27:48,466 INFO L481 AbstractCegarLoop]: Abstraction has 17167 states and 22299 transitions. [2018-10-27 08:27:48,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:27:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 17167 states and 22299 transitions. [2018-10-27 08:27:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-10-27 08:27:48,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:27:48,517 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:27:48,517 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:27:48,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:48,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1522548143, now seen corresponding path program 1 times [2018-10-27 08:27:48,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:27:48,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:48,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:27:48,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:48,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:27:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:27:48,926 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 08:27:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 257 proven. 311 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-27 08:27:49,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:27:49,741 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:27:49,741 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 530 with the following transitions: [2018-10-27 08:27:49,741 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [495], [497], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:27:49,751 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:27:49,752 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:27:50,033 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:27:50,033 INFO L272 AbstractInterpreter]: Visited 149 different actions 434 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:27:50,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:50,070 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:27:50,748 INFO L227 lantSequenceWeakener]: Weakened 526 states. On average, predicates are now at 80.34% of their original sizes. [2018-10-27 08:27:50,748 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:27:51,272 INFO L415 sIntCurrentIteration]: We unified 528 AI predicates to 528 [2018-10-27 08:27:51,272 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:27:51,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:27:51,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-10-27 08:27:51,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:27:51,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:27:51,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:27:51,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:27:51,276 INFO L87 Difference]: Start difference. First operand 17167 states and 22299 transitions. Second operand 10 states. [2018-10-27 08:29:11,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:29:11,127 INFO L93 Difference]: Finished difference Result 36682 states and 47890 transitions. [2018-10-27 08:29:11,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 08:29:11,127 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 529 [2018-10-27 08:29:11,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:29:11,187 INFO L225 Difference]: With dead ends: 36682 [2018-10-27 08:29:11,187 INFO L226 Difference]: Without dead ends: 19859 [2018-10-27 08:29:11,250 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 538 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:29:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2018-10-27 08:29:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 19804. [2018-10-27 08:29:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19804 states. [2018-10-27 08:29:11,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19804 states to 19804 states and 24822 transitions. [2018-10-27 08:29:11,583 INFO L78 Accepts]: Start accepts. Automaton has 19804 states and 24822 transitions. Word has length 529 [2018-10-27 08:29:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:29:11,584 INFO L481 AbstractCegarLoop]: Abstraction has 19804 states and 24822 transitions. [2018-10-27 08:29:11,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:29:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 19804 states and 24822 transitions. [2018-10-27 08:29:11,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2018-10-27 08:29:11,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:29:11,648 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:29:11,649 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:29:11,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:11,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1339943481, now seen corresponding path program 1 times [2018-10-27 08:29:11,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:29:11,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:11,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:29:11,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:11,651 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:29:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:29:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 423 proven. 115 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2018-10-27 08:29:12,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:29:12,956 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:29:12,957 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 678 with the following transitions: [2018-10-27 08:29:12,957 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [495], [497], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:29:12,965 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:29:12,965 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:29:13,620 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:29:13,620 INFO L272 AbstractInterpreter]: Visited 251 different actions 1001 times. Merged at 9 different actions 32 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:29:13,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:13,639 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:29:13,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:29:13,639 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:29:13,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:29:13,651 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:29:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:29:13,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:29:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 752 proven. 2 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2018-10-27 08:29:14,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:29:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 423 proven. 115 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2018-10-27 08:29:15,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:29:15,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:29:15,344 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:29:15,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:29:15,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:29:15,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:29:15,346 INFO L87 Difference]: Start difference. First operand 19804 states and 24822 transitions. Second operand 9 states. [2018-10-27 08:29:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:29:24,013 INFO L93 Difference]: Finished difference Result 40980 states and 53095 transitions. [2018-10-27 08:29:24,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 08:29:24,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 677 [2018-10-27 08:29:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:29:24,154 INFO L225 Difference]: With dead ends: 40980 [2018-10-27 08:29:24,155 INFO L226 Difference]: Without dead ends: 21520 [2018-10-27 08:29:24,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1375 GetRequests, 1357 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2018-10-27 08:29:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21520 states. [2018-10-27 08:29:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21520 to 21472. [2018-10-27 08:29:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21472 states. [2018-10-27 08:29:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21472 states to 21472 states and 26798 transitions. [2018-10-27 08:29:25,076 INFO L78 Accepts]: Start accepts. Automaton has 21472 states and 26798 transitions. Word has length 677 [2018-10-27 08:29:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:29:25,077 INFO L481 AbstractCegarLoop]: Abstraction has 21472 states and 26798 transitions. [2018-10-27 08:29:25,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:29:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 21472 states and 26798 transitions. [2018-10-27 08:29:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2018-10-27 08:29:25,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:29:25,176 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:29:25,177 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:29:25,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:25,177 INFO L82 PathProgramCache]: Analyzing trace with hash -449775287, now seen corresponding path program 1 times [2018-10-27 08:29:25,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:29:25,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:25,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:29:25,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:25,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:29:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:29:26,781 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-27 08:29:27,165 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-27 08:29:27,381 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:29:28,020 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2018-10-27 08:29:28,793 WARN L179 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2018-10-27 08:29:29,221 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-10-27 08:29:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 208 proven. 872 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-10-27 08:29:31,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:29:31,115 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:29:31,115 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 878 with the following transitions: [2018-10-27 08:29:31,116 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [495], [497], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1176], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1392], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:29:31,121 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:29:31,121 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:29:32,100 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:29:32,101 INFO L272 AbstractInterpreter]: Visited 260 different actions 514 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:29:32,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:32,138 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:29:33,345 INFO L227 lantSequenceWeakener]: Weakened 874 states. On average, predicates are now at 77.51% of their original sizes. [2018-10-27 08:29:33,345 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:29:34,133 INFO L415 sIntCurrentIteration]: We unified 876 AI predicates to 876 [2018-10-27 08:29:34,133 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:29:34,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:29:34,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-10-27 08:29:34,134 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:29:34,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:29:34,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:29:34,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:29:34,135 INFO L87 Difference]: Start difference. First operand 21472 states and 26798 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown