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/Problem12_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:43:14,120 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:43:14,124 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:43:14,141 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:43:14,142 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:43:14,143 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:43:14,145 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:43:14,148 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:43:14,150 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:43:14,153 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:43:14,155 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:43:14,155 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:43:14,156 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:43:14,159 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:43:14,167 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:43:14,168 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:43:14,169 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:43:14,173 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:43:14,174 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:43:14,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:43:14,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:43:14,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:43:14,186 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:43:14,187 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:43:14,187 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:43:14,188 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:43:14,189 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:43:14,190 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:43:14,193 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:43:14,194 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:43:14,195 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:43:14,196 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:43:14,196 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:43:14,196 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:43:14,197 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:43:14,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:43:14,198 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 07:43:14,212 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:43:14,213 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:43:14,214 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:43:14,214 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:43:14,214 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:43:14,214 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:43:14,214 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:43:14,214 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:43:14,215 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:43:14,215 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:43:14,215 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:43:14,215 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:43:14,215 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:43:14,216 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:43:14,216 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:43:14,216 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:43:14,217 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:43:14,217 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:43:14,217 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:43:14,217 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:43:14,217 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:43:14,217 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:43:14,218 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:43:14,218 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:43:14,218 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:43:14,218 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:43:14,218 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:43:14,219 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:43:14,219 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:43:14,219 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:43:14,219 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:43:14,219 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:43:14,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:43:14,220 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:43:14,220 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:43:14,220 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:43:14,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:43:14,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:43:14,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:43:14,293 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:43:14,294 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:43:14,295 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-10-27 07:43:14,363 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3224e24e8/95e60c2f1dd447ccb42f6b84505f89b9/FLAG9c2059a7d [2018-10-27 07:43:15,091 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:43:15,092 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-10-27 07:43:15,131 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3224e24e8/95e60c2f1dd447ccb42f6b84505f89b9/FLAG9c2059a7d [2018-10-27 07:43:15,150 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3224e24e8/95e60c2f1dd447ccb42f6b84505f89b9 [2018-10-27 07:43:15,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:43:15,164 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:43:15,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:43:15,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:43:15,170 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:43:15,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:15" (1/1) ... [2018-10-27 07:43:15,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:15, skipping insertion in model container [2018-10-27 07:43:15,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:15" (1/1) ... [2018-10-27 07:43:15,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:43:15,340 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:43:16,598 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:43:16,602 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:43:17,228 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:43:17,268 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:43:17,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17 WrapperNode [2018-10-27 07:43:17,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:43:17,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:43:17,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:43:17,271 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:43:17,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (1/1) ... [2018-10-27 07:43:17,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (1/1) ... [2018-10-27 07:43:17,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:43:17,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:43:17,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:43:17,949 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:43:17,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (1/1) ... [2018-10-27 07:43:17,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (1/1) ... [2018-10-27 07:43:17,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (1/1) ... [2018-10-27 07:43:17,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (1/1) ... [2018-10-27 07:43:18,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (1/1) ... [2018-10-27 07:43:18,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (1/1) ... [2018-10-27 07:43:18,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (1/1) ... [2018-10-27 07:43:18,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:43:18,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:43:18,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:43:18,208 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:43:18,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (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 07:43:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:43:18,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:43:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:43:18,280 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:43:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:43:18,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:43:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:43:18,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:43:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:43:18,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:43:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:43:18,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:43:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:43:18,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:43:29,568 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:43:29,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:29 BoogieIcfgContainer [2018-10-27 07:43:29,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:43:29,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:43:29,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:43:29,574 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:43:29,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:43:15" (1/3) ... [2018-10-27 07:43:29,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:29, skipping insertion in model container [2018-10-27 07:43:29,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:17" (2/3) ... [2018-10-27 07:43:29,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:29, skipping insertion in model container [2018-10-27 07:43:29,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:29" (3/3) ... [2018-10-27 07:43:29,578 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label15_true-unreach-call.c [2018-10-27 07:43:29,588 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:43:29,600 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:43:29,618 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:43:29,677 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:43:29,678 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:43:29,678 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:43:29,678 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:43:29,678 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:43:29,678 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:43:29,679 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:43:29,679 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:43:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 07:43:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-27 07:43:29,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:43:29,744 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] [2018-10-27 07:43:29,749 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:43:29,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:29,756 INFO L82 PathProgramCache]: Analyzing trace with hash 394736435, now seen corresponding path program 1 times [2018-10-27 07:43:29,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:43:29,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:29,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:43:29,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:29,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:43:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:43:30,456 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:43:30,616 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 07:43:30,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:43:30,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:43:30,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:43:30,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:43:30,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:43:30,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:43:30,646 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 07:43:39,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:43:39,081 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 07:43:39,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:43:39,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-10-27 07:43:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:43:39,129 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 07:43:39,129 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 07:43:39,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:43:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 07:43:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 07:43:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 07:43:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-27 07:43:39,297 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 61 [2018-10-27 07:43:39,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:43:39,297 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-27 07:43:39,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:43:39,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-27 07:43:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-27 07:43:39,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:43:39,314 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, 1, 1, 1, 1, 1, 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 07:43:39,315 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:43:39,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:39,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2085230804, now seen corresponding path program 1 times [2018-10-27 07:43:39,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:43:39,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:39,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:43:39,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:39,318 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:43:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:43:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:43:39,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:43:39,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:43:39,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:43:39,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:43:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:43:39,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:43:39,699 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-27 07:43:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:43:49,989 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-27 07:43:49,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:43:49,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-10-27 07:43:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:43:50,017 INFO L225 Difference]: With dead ends: 4818 [2018-10-27 07:43:50,017 INFO L226 Difference]: Without dead ends: 3220 [2018-10-27 07:43:50,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 07:43:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-27 07:43:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-27 07:43:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-27 07:43:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-27 07:43:50,148 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 135 [2018-10-27 07:43:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:43:50,149 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-27 07:43:50,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:43:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-27 07:43:50,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 07:43:50,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:43:50,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:50,153 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:43:50,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:50,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1091528155, now seen corresponding path program 1 times [2018-10-27 07:43:50,154 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:43:50,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:50,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:43:50,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:50,155 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:43:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:43:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:43:50,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:43:50,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:43:50,417 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:43:50,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:43:50,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:43:50,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:43:50,419 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-10-27 07:44:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:44:03,197 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-10-27 07:44:03,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:44:03,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-27 07:44:03,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:44:03,259 INFO L225 Difference]: With dead ends: 11148 [2018-10-27 07:44:03,259 INFO L226 Difference]: Without dead ends: 7968 [2018-10-27 07:44:03,277 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 07:44:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-10-27 07:44:03,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-10-27 07:44:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-10-27 07:44:03,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-10-27 07:44:03,513 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 140 [2018-10-27 07:44:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:44:03,514 INFO L481 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-10-27 07:44:03,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:44:03,514 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-10-27 07:44:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-27 07:44:03,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:44:03,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:03,518 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:44:03,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:44:03,519 INFO L82 PathProgramCache]: Analyzing trace with hash 266956725, now seen corresponding path program 1 times [2018-10-27 07:44:03,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:44:03,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:03,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:44:03,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:03,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:44:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:44:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:44:03,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:44:03,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:44:03,761 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:44:03,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:44:03,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:44:03,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:44:03,762 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-10-27 07:44:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:44:13,113 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-10-27 07:44:13,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:44:13,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-10-27 07:44:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:44:13,204 INFO L225 Difference]: With dead ends: 22224 [2018-10-27 07:44:13,205 INFO L226 Difference]: Without dead ends: 14306 [2018-10-27 07:44:13,249 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 07:44:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-10-27 07:44:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-10-27 07:44:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-10-27 07:44:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-10-27 07:44:13,611 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 148 [2018-10-27 07:44:13,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:44:13,612 INFO L481 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-10-27 07:44:13,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:44:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-10-27 07:44:13,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-27 07:44:13,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:44:13,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:13,622 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:44:13,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:44:13,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1611009688, now seen corresponding path program 1 times [2018-10-27 07:44:13,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:44:13,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:13,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:44:13,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:13,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:44:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:44:13,959 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:44:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:44:14,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:44:14,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:44:14,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:44:14,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:44:14,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:44:14,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:44:14,352 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-10-27 07:44:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:44:26,326 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-10-27 07:44:26,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:44:26,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-27 07:44:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:44:26,416 INFO L225 Difference]: With dead ends: 35956 [2018-10-27 07:44:26,417 INFO L226 Difference]: Without dead ends: 21743 [2018-10-27 07:44:26,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:44:26,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-10-27 07:44:26,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-10-27 07:44:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-10-27 07:44:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-10-27 07:44:26,993 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 181 [2018-10-27 07:44:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:44:26,994 INFO L481 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-10-27 07:44:26,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:44:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-10-27 07:44:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-27 07:44:27,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:44:27,010 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, 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] [2018-10-27 07:44:27,010 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:44:27,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:44:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash -849945464, now seen corresponding path program 1 times [2018-10-27 07:44:27,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:44:27,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:27,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:44:27,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:27,013 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:44:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:44:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 111 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 07:44:27,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:44:27,661 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:44:27,662 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-10-27 07:44:27,664 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2255], [2257], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2460], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:44:27,734 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:44:27,735 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:44:28,495 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:44:28,497 INFO L272 AbstractInterpreter]: Visited 103 different actions 199 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 07:44:28,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:44:28,542 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:44:29,046 INFO L227 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 75.8% of their original sizes. [2018-10-27 07:44:29,046 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:44:29,591 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-10-27 07:44:29,591 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:44:29,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:44:29,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 07:44:29,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:44:29,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:44:29,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:44:29,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:44:29,595 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown