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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 13:43:56,111 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 13:43:56,113 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 13:43:56,135 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 13:43:56,135 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 13:43:56,136 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 13:43:56,138 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 13:43:56,140 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 13:43:56,142 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 13:43:56,143 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 13:43:56,144 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 13:43:56,144 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 13:43:56,145 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 13:43:56,146 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 13:43:56,147 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 13:43:56,148 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 13:43:56,149 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 13:43:56,151 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 13:43:56,153 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 13:43:56,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 13:43:56,156 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 13:43:56,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 13:43:56,159 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 13:43:56,160 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 13:43:56,160 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 13:43:56,161 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 13:43:56,162 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 13:43:56,163 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 13:43:56,164 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 13:43:56,165 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 13:43:56,165 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 13:43:56,166 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 13:43:56,166 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 13:43:56,167 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 13:43:56,168 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 13:43:56,169 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 13:43:56,169 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 13:43:56,186 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 13:43:56,186 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 13:43:56,187 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 13:43:56,187 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 13:43:56,187 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 13:43:56,188 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 13:43:56,189 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 13:43:56,189 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 13:43:56,189 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 13:43:56,189 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 13:43:56,189 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 13:43:56,190 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 13:43:56,190 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 13:43:56,190 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 13:43:56,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 13:43:56,192 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 13:43:56,192 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 13:43:56,192 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 13:43:56,193 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 13:43:56,194 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 13:43:56,194 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 13:43:56,194 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 13:43:56,194 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 13:43:56,194 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 13:43:56,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 13:43:56,195 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 13:43:56,195 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 13:43:56,195 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 13:43:56,195 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 13:43:56,196 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 13:43:56,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 13:43:56,196 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 13:43:56,196 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 13:43:56,196 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 13:43:56,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 13:43:56,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 13:43:56,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 13:43:56,279 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 13:43:56,280 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 13:43:56,280 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37_true-unreach-call.c [2018-10-27 13:43:56,340 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4863e2357/fa834243c6da4e7aa33fe34e55c6624b/FLAGe56c66653 [2018-10-27 13:43:56,872 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 13:43:56,873 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label37_true-unreach-call.c [2018-10-27 13:43:56,902 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4863e2357/fa834243c6da4e7aa33fe34e55c6624b/FLAGe56c66653 [2018-10-27 13:43:56,925 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4863e2357/fa834243c6da4e7aa33fe34e55c6624b [2018-10-27 13:43:56,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 13:43:56,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 13:43:56,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 13:43:56,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 13:43:56,949 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 13:43:56,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:43:56" (1/1) ... [2018-10-27 13:43:56,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5722cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:56, skipping insertion in model container [2018-10-27 13:43:56,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:43:56" (1/1) ... [2018-10-27 13:43:56,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 13:43:57,040 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 13:43:57,533 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:43:57,537 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 13:43:57,687 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:43:57,708 INFO L193 MainTranslator]: Completed translation [2018-10-27 13:43:57,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57 WrapperNode [2018-10-27 13:43:57,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 13:43:57,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 13:43:57,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 13:43:57,711 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 13:43:57,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (1/1) ... [2018-10-27 13:43:57,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (1/1) ... [2018-10-27 13:43:57,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 13:43:57,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 13:43:57,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 13:43:57,959 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 13:43:57,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (1/1) ... [2018-10-27 13:43:57,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (1/1) ... [2018-10-27 13:43:57,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (1/1) ... [2018-10-27 13:43:57,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (1/1) ... [2018-10-27 13:43:58,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (1/1) ... [2018-10-27 13:43:58,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (1/1) ... [2018-10-27 13:43:58,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (1/1) ... [2018-10-27 13:43:58,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 13:43:58,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 13:43:58,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 13:43:58,086 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 13:43:58,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (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 13:43:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 13:43:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 13:43:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 13:43:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 13:43:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 13:43:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 13:43:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 13:43:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 13:44:01,229 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 13:44:01,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:01 BoogieIcfgContainer [2018-10-27 13:44:01,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 13:44:01,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 13:44:01,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 13:44:01,234 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 13:44:01,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:43:56" (1/3) ... [2018-10-27 13:44:01,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f96f938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:01, skipping insertion in model container [2018-10-27 13:44:01,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:43:57" (2/3) ... [2018-10-27 13:44:01,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f96f938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:01, skipping insertion in model container [2018-10-27 13:44:01,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:01" (3/3) ... [2018-10-27 13:44:01,238 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label37_true-unreach-call.c [2018-10-27 13:44:01,247 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 13:44:01,255 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 13:44:01,273 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 13:44:01,312 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 13:44:01,312 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 13:44:01,313 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 13:44:01,313 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 13:44:01,313 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 13:44:01,313 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 13:44:01,314 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 13:44:01,314 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 13:44:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 13:44:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-27 13:44:01,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:44:01,354 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 13:44:01,356 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:44:01,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:01,363 INFO L82 PathProgramCache]: Analyzing trace with hash -890432215, now seen corresponding path program 1 times [2018-10-27 13:44:01,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:44:01,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:01,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:44:01,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:01,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:44:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:44:01,972 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 13:44:01,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:44:01,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 13:44:01,976 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:44:01,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 13:44:02,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 13:44:02,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 13:44:02,007 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-27 13:44:04,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:44:04,786 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-27 13:44:04,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 13:44:04,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-10-27 13:44:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:44:04,811 INFO L225 Difference]: With dead ends: 737 [2018-10-27 13:44:04,811 INFO L226 Difference]: Without dead ends: 515 [2018-10-27 13:44:04,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 13:44:04,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-27 13:44:04,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-10-27 13:44:04,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-27 13:44:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 579 transitions. [2018-10-27 13:44:04,900 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 579 transitions. Word has length 61 [2018-10-27 13:44:04,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:44:04,901 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 579 transitions. [2018-10-27 13:44:04,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 13:44:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 579 transitions. [2018-10-27 13:44:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 13:44:04,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:44:04,913 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] [2018-10-27 13:44:04,913 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:44:04,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:04,914 INFO L82 PathProgramCache]: Analyzing trace with hash 833383459, now seen corresponding path program 1 times [2018-10-27 13:44:04,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:44:04,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:04,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:44:04,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:04,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:44:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:44:05,296 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 13:44:05,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:44:05,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:44:05,297 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:44:05,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:44:05,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:44:05,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:44:05,300 INFO L87 Difference]: Start difference. First operand 356 states and 579 transitions. Second operand 6 states. [2018-10-27 13:44:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:44:08,025 INFO L93 Difference]: Finished difference Result 1259 states and 2162 transitions. [2018-10-27 13:44:08,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:44:08,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-27 13:44:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:44:08,043 INFO L225 Difference]: With dead ends: 1259 [2018-10-27 13:44:08,043 INFO L226 Difference]: Without dead ends: 909 [2018-10-27 13:44:08,048 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 13:44:08,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2018-10-27 13:44:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 895. [2018-10-27 13:44:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2018-10-27 13:44:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1370 transitions. [2018-10-27 13:44:08,145 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1370 transitions. Word has length 136 [2018-10-27 13:44:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:44:08,148 INFO L481 AbstractCegarLoop]: Abstraction has 895 states and 1370 transitions. [2018-10-27 13:44:08,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:44:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1370 transitions. [2018-10-27 13:44:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 13:44:08,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:44:08,162 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] [2018-10-27 13:44:08,164 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:44:08,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:08,164 INFO L82 PathProgramCache]: Analyzing trace with hash 487326791, now seen corresponding path program 1 times [2018-10-27 13:44:08,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:44:08,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:08,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:44:08,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:08,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:44:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:44:08,487 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 13:44:08,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:44:08,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:44:08,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:44:08,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:44:08,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:44:08,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:44:08,490 INFO L87 Difference]: Start difference. First operand 895 states and 1370 transitions. Second operand 6 states. [2018-10-27 13:44:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:44:12,295 INFO L93 Difference]: Finished difference Result 2358 states and 3764 transitions. [2018-10-27 13:44:12,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:44:12,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-10-27 13:44:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:44:12,311 INFO L225 Difference]: With dead ends: 2358 [2018-10-27 13:44:12,312 INFO L226 Difference]: Without dead ends: 1469 [2018-10-27 13:44:12,318 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 13:44:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2018-10-27 13:44:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1450. [2018-10-27 13:44:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2018-10-27 13:44:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2107 transitions. [2018-10-27 13:44:12,387 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2107 transitions. Word has length 138 [2018-10-27 13:44:12,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:44:12,387 INFO L481 AbstractCegarLoop]: Abstraction has 1450 states and 2107 transitions. [2018-10-27 13:44:12,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:44:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2107 transitions. [2018-10-27 13:44:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-27 13:44:12,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:44:12,394 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] [2018-10-27 13:44:12,394 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:44:12,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:12,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1877603308, now seen corresponding path program 1 times [2018-10-27 13:44:12,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:44:12,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:12,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:44:12,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:12,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:44:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:44:12,653 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 13:44:12,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:44:12,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 13:44:12,654 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:44:12,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 13:44:12,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 13:44:12,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 13:44:12,656 INFO L87 Difference]: Start difference. First operand 1450 states and 2107 transitions. Second operand 4 states. [2018-10-27 13:44:14,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:44:14,363 INFO L93 Difference]: Finished difference Result 3188 states and 4711 transitions. [2018-10-27 13:44:14,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 13:44:14,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-27 13:44:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:44:14,381 INFO L225 Difference]: With dead ends: 3188 [2018-10-27 13:44:14,381 INFO L226 Difference]: Without dead ends: 1744 [2018-10-27 13:44:14,389 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 13:44:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2018-10-27 13:44:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1742. [2018-10-27 13:44:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1742 states. [2018-10-27 13:44:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2373 transitions. [2018-10-27 13:44:14,439 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2373 transitions. Word has length 141 [2018-10-27 13:44:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:44:14,439 INFO L481 AbstractCegarLoop]: Abstraction has 1742 states and 2373 transitions. [2018-10-27 13:44:14,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 13:44:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2373 transitions. [2018-10-27 13:44:14,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-27 13:44:14,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:44:14,444 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] [2018-10-27 13:44:14,445 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:44:14,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:14,445 INFO L82 PathProgramCache]: Analyzing trace with hash -497008844, now seen corresponding path program 1 times [2018-10-27 13:44:14,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:44:14,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:14,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:44:14,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:14,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:44:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:44:14,719 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 13:44:14,779 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 13:44:14,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:44:14,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:44:14,780 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:44:14,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:44:14,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:44:14,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:44:14,783 INFO L87 Difference]: Start difference. First operand 1742 states and 2373 transitions. Second operand 6 states. [2018-10-27 13:44:16,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:44:16,488 INFO L93 Difference]: Finished difference Result 3994 states and 5608 transitions. [2018-10-27 13:44:16,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:44:16,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-10-27 13:44:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:44:16,506 INFO L225 Difference]: With dead ends: 3994 [2018-10-27 13:44:16,506 INFO L226 Difference]: Without dead ends: 2258 [2018-10-27 13:44:16,515 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 13:44:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2018-10-27 13:44:16,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2208. [2018-10-27 13:44:16,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2208 states. [2018-10-27 13:44:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 2886 transitions. [2018-10-27 13:44:16,597 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 2886 transitions. Word has length 157 [2018-10-27 13:44:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:44:16,598 INFO L481 AbstractCegarLoop]: Abstraction has 2208 states and 2886 transitions. [2018-10-27 13:44:16,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:44:16,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 2886 transitions. [2018-10-27 13:44:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-27 13:44:16,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:44:16,609 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 13:44:16,610 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:44:16,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:16,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1003336825, now seen corresponding path program 1 times [2018-10-27 13:44:16,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:44:16,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:16,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:44:16,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:16,612 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:44:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:44:16,947 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 13:44:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-27 13:44:17,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 13:44:17,059 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 13:44:17,060 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-10-27 13:44:17,062 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [570], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 13:44:17,113 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 13:44:17,113 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 13:44:17,693 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 13:44:17,761 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 13:44:17,762 INFO L272 AbstractInterpreter]: Visited 94 different actions 94 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 13:44:17,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:17,806 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 13:44:18,543 INFO L227 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 73.77% of their original sizes. [2018-10-27 13:44:18,543 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 13:44:19,568 INFO L415 sIntCurrentIteration]: We unified 230 AI predicates to 230 [2018-10-27 13:44:19,569 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 13:44:19,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 13:44:19,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-27 13:44:19,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:44:19,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 13:44:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 13:44:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 13:44:19,572 INFO L87 Difference]: Start difference. First operand 2208 states and 2886 transitions. Second operand 10 states. [2018-10-27 13:46:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:46:57,118 INFO L93 Difference]: Finished difference Result 4559 states and 5978 transitions. [2018-10-27 13:46:57,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 13:46:57,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 231 [2018-10-27 13:46:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:46:57,131 INFO L225 Difference]: With dead ends: 4559 [2018-10-27 13:46:57,131 INFO L226 Difference]: Without dead ends: 2357 [2018-10-27 13:46:57,139 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 194 SyntacticMatches, 28 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-27 13:46:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2018-10-27 13:46:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2352. [2018-10-27 13:46:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2018-10-27 13:46:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3038 transitions. [2018-10-27 13:46:57,203 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3038 transitions. Word has length 231 [2018-10-27 13:46:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:46:57,203 INFO L481 AbstractCegarLoop]: Abstraction has 2352 states and 3038 transitions. [2018-10-27 13:46:57,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 13:46:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3038 transitions. [2018-10-27 13:46:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-27 13:46:57,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:46:57,218 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, 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] [2018-10-27 13:46:57,219 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:46:57,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:46:57,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1827733875, now seen corresponding path program 1 times [2018-10-27 13:46:57,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:46:57,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:46:57,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:46:57,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:46:57,222 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:46:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:46:57,534 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 13:46:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 13:46:57,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 13:46:57,734 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 13:46:57,735 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-27 13:46:57,735 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [702], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 13:46:57,742 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 13:46:57,742 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 13:46:57,833 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 13:46:58,527 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 13:46:58,527 INFO L272 AbstractInterpreter]: Visited 130 different actions 765 times. Merged at 7 different actions 40 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 13:46:58,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:46:58,535 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 13:46:58,875 INFO L227 lantSequenceWeakener]: Weakened 260 states. On average, predicates are now at 73.42% of their original sizes. [2018-10-27 13:46:58,876 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 13:46:59,026 INFO L415 sIntCurrentIteration]: We unified 262 AI predicates to 262 [2018-10-27 13:46:59,027 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 13:46:59,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 13:46:59,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-10-27 13:46:59,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:46:59,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 13:46:59,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 13:46:59,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-27 13:46:59,029 INFO L87 Difference]: Start difference. First operand 2352 states and 3038 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown